The FLASH HDF5 structure

== Contents ==

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== General information about HDF5 ==

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HDF5 is a data format maintained by the HDF group. For detailed general information see [[here>>url:https://portal.hdfgroup.org/display/support||shape="rect"]]

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To download the HDF5 Viewer click [[here>>url:https://portal.hdfgroup.org/display/support/Download+HDFView||shape="rect"]]

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For use on the DESY Maxwell or PAL (max-fsc or pal) **hdfview** is available in the xray module :

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{{code language="none"}}> module load xray{{/code}}

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{{code language="none"}}> hdfview{{/code}}

or you can use

> silx view

[[Contents>>doc:||anchor="Contents"]]

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== The FLASH HDF5 format ==

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FLASH provides a conversion of its data acquisition (DAQ) to the commonly used [[HDF5>>url:https://www.hdfgroup.org/solutions/hdf5/||shape="rect"]] format. Correlated data are mapped by a primary index called **train ID**. Every data set has an individual index of train IDs to identify the data even when data are missing or deviate in update rate. If the data set of choice contains gaps, users have to decide how to treat missing values. DAQ channels are spread across various files with one file name pattern for each DAQ. This means users have to assemble data from different files if necessary.

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The hierarchy is realized using a human readable named HDF tree with each DAQ channel containing the data sets "//value//" and "//index//". Additionally, the HDF group //zraw// contains a tree of the original DAQ channel names.

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Reference implementation, which follows the concept of Python libraries like Pandas, Xarray, or Dask, is given below.

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=== Comparison to FLASH's deprecated HDF formats ===

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Before 2021, FLASH provided two different HDF formats formally known as //near-online// and //offline// HDF files.

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All data sets were aligned by the same global index by filling in missing data. Fast DAQ channels (pulse synchronous data - update 10 Hz) are filled in by NaN or 0, slow channels (not pulse synchronous data - update e.g. 1 Hz ) are interpolated by the DAQs libraries, by keeping the value constant up to the next change.

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While the near-online HDF files were converted live during the beamtime, the offline HDF files were manually compiled weeks/months later. Near-online HDF files were used by a provided API [[BeamtimeDaqAccess>>url:https://confluence.desy.de/display/FLASHUSER/Near-Online+data+analysis#Near-Onlinedataanalysis-BriefUserGuidetoBeamtimeDAQAccess||shape="rect"]], which also searches for DAQ channels in files. With assembled files "by run", all DAQ channels were existing in the same HDF file. While shorter runs usually fitted into one file, longer runs still had to be aggregated over several files. The creation of the assembled type of files still involves the use of fairly unstable DAQ Mex-functions As the environment required for using the Mex-functions is already deprecated, its continued existence is uncertain.

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The HDF hierarchy is almost identical in all formats. While in the the recent format each DAQ channel contains the data sets "value" and "index", the deprecated format had one data set for each DAQ channel. The deprecated formats supplies no time axis parameters for spectra data types.

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**HDF5 example files (old format)**

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Here we have a few HDF5 samples (User data combined with Photon diagnostics data) from a few beamtimes showing the different kind options.

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[[image:attach:image2019-10-21_17-2-50.png||thumbnail="true" width="300"]] [[download HDF5 (Images @ FL2)>>url:https://desycloud.desy.de/index.php/s/nyEgeCWJFC4gao2||shape="rect"]]

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[[~[~[image:attach:image2019-10-22_10-52-27.png~|~|thumbnail="true" width="300"~]~]download HDF5 (GHz ADC and OPIS @ FL2)>>url:https://desycloud.desy.de/index.php/s/AeA2kPNNnZgX95A||shape="rect"]]

=== HDF examples: ===

* ADC data as example for **fast** **data** (10 Hz):

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[[image:attach:image2020-11-16_15-26-28.png||height="250"]]

* The //average// FEL pulse energy as example for the **slow** **data**. Here the data is not saved with 10 Hz - thus not for every FEL pulse train. The data is typically saved with 1 Hz if the values are changing (like the FEL energy) and every about 20 sec if there is no change for longer time ( e.g. motor set values). Thus to use the data together with the "fast" one, one has to interpolate the data as explained in the examples in the repos below show (e.g. {{code language="none"}}df['GMD_T_average'] = df['GMD_T_average'].interpolate(method='linear'){{/code}})

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( as example only every 10th train ID is listed in the HDF group "index")

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[[image:attach:image2020-11-16_15-31-45.png||height="250"]]

* (((

//zraw// group contains the **original DAQ (DOOCS) names**

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)))

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of the properties saved in the DESY internal raw format. (For experts)

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[[image:attach:image2020-11-16_16-26-3.png||height="400"]]

=== There are different options that help you to work with the FLASH HDF5 data in Python ===

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* The currently developed option for large data sets: [[the FAB package>>url:https://hasfcpkg.desy.de/fab/fab.html||shape="rect"]] ... see below

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* and for smaller projects: (% class="Object" %)[[https:~~/~~/gitlab.desy.de/christopher.passow/flash-daq-hdf>>url:https://gitlab.desy.de/christopher.passow/flash-daq-hdf||shape="rect"]]

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(% class="Object" %)See also the collection of Demo data and sample scripts : [[doc:FS-FLASH USER tmp.Data Acquisition and controls 1.DAQ and controls overview.Offline data analysis (DAQ).Collection of HDF5 sample data from different beamlines.WebHome]] and [[doc:FS-FLASH USER tmp.Data Acquisition and controls 1.DAQ and controls overview.Offline data analysis (DAQ).DEMO - Working with FLASH data.WebHome]]

== Complete list of recordable parameters ==

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The complete list for the relation between DOOCS names and HDF5 names for the recordable parameters can be found in [[DESY's Repository>>url:https://stash.desy.de/projects/CS/repos/pah/browse/src/camp/data/channel2HdfName.dat||shape="rect"]].

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== Most popular FLASH parameters and their names in HDF5, DOOCS and (raw) DAQ ==

Note, the HDF group and data set names apply to our HDF tree version since vers. 0.3.0.

=== FLASH1 ===

==== Beamline info (FLASH1) ====

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{{code language="none"}}/FL1/Beamlines/Attenuator/pressure{{/code}}

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//always saved (PBD)//

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DOOCS prop : {{code language="none"}}FLASH.FEL/GAS_DOSING/FL1.ATTENUATOR/PRESSURE{{/code}}

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DAQ channel: {{code language="none"}}FLASH.FEL/GAS_DOSING/FL1.ATTENUATOR/PRESSURE{{/code}}

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desc: set pressure in the gas attenuator

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units: mbar

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{{code language="none"}}/FL1/Beamlines/BL/Fast shutter/open{{/code}}

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//always saved (PBD)//

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DOOCS prop : {{code language="none"}}FLASH.FEL/ADC.SIS.FL1FS/BL.SHUTTER/CH00.TD{{/code}}

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DAQ channel: {{code language="none"}}FLASH.FEL/ADC.SIS.FL1FS/BL.SHUTTER{{/code}}

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desc: BL Beamline Fast shutter state: 1 is open, 0 is closed ( for technical reasons there are 100 vales of this state saved ...)

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units: none

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{{code language="none"}}/FL1/Beamlines/PG/Fast shutter/open{{/code}}

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//always saved (PBD)//

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DOOCS prop : {{code language="none"}}FLASH.FEL/ADC.SIS.FL1FS/PG.SHUTTER/CH00.TD{{/code}}

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DAQ channel: {{code language="none"}}FLASH.FEL/ADC.SIS.FL1FS/PG.SHUTTER{{/code}}

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desc: PG Beamline Fast shutter state: 1 is open, 0 is closed ( for technical reasons there are 100 vales of this state saved ...)

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units: none

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{{code language="none"}}/FL1/Beamlines/BL/Filters/BL filter wheel/position filter 1{{/code}}

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//always saved (PBD)//

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DOOCS prop : {{code language="none"}}TTF2.FEL/BLFILTERS1/FILTER1/FW.MOTOR.POS{{/code}}

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DAQ channel: {{code language="none"}}TTF2.FEL/BLFILTERS1/FILTER1/FW.MOTOR.POS{{/code}}

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desc: Position of the BL filter wheel 1 - to correlate with the filter material please look [[here>>doc:FS-FLASH USER tmp.jddd-linked help pages.Filter-Units.Filter wheels in FLASH1 and FLASH2.WebHome]]

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units: degree

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{{code language="none"}}/FL1/Beamlines/BL/Filters/BL filter wheel/position filter 2{{/code}}

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//always saved (PBD)//

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DOOCS prop : {{code language="none"}}TTF2.FEL/BLFILTERS2/FILTER2/FW.MOTOR.POS{{/code}}

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DAQ channel: {{code language="none"}}TTF2.FEL/BLFILTERS2/FILTER2/FW.MOTOR.POS{{/code}}

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desc: Position of the BL filter wheel 2 - to correlate with the filter material please look [[here>>doc:FS-FLASH USER tmp.jddd-linked help pages.Filter-Units.Filter wheels in FLASH1 and FLASH2.WebHome]]

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units: degree

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{{code language="none"}}/FL1/Beamlines/PG/Filters/position filter 1{{/code}}

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//always saved (PBD)//

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DOOCS prop : = TTF2.FEL/BDAF1/BDA.F1/FW.MOTOR.POS=

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DAQ channel: {{code language="none"}}TTF2.FEL/BDAF1/BDA.F1/FW.MOTOR.POS{{/code}}

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desc: Position of the PG filter wheel 1

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units: degree

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{{code language="none"}}/FL1/Beamlines/PG/Filters/position filter 2{{/code}}

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//always saved (PBD)//

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DOOCS prop : {{code language="none"}}TTF2.FEL/BDAF2/BDA.F2/FW.MOTOR.POS{{/code}}

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DAQ channel: {{code language="none"}}TTF2.FEL/BDAF2/BDA.F2/FW.MOTOR.POS{{/code}}

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desc: Position of the PG filter wheel 2

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units: degree

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{{code language="none"}}/FL1/Beamlines/PG/Filters/position filter 3{{/code}}

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//always saved (PBD)//

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DOOCS prop : {{code language="none"}}TTF2.FEL/PGFILTERS/PGFILTERS/FW.MOTOR.POS{{/code}}

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DAQ channel: {{code language="none"}}TTF2.FEL/PGFILTERS/PGFILTERS/FW.MOTOR.POS{{/code}}

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desc: Position of the PG filter wheel 3

units: degree

NOTE: Aperture positions in the beamline as well as the positions of the beam steering mirrors are also saved. For more Info contact your local contact

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[[Contents>>doc:||anchor="Contents"]]

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==== Photon Diagnostics SASE ([[GMD>>url:http://photon-science.desy.de/facilities/flash/photon_diagnostics/gmd_intensity_and_position/index_eng.html||shape="rect"]]) ====

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(% style="color:#000000" %)**Discontinued GMD data recording / evaluation (VME + PhotonFlux ML server)**

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{{code language="none"}}/FL1/Photon Diagnostic/GMD/Average energy/energy tunnel{{/code}}

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//always saved (PBD)//

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(% style="color:#000000" %)DOOCS prop : {{code language="none"}}TTF2.DAQ/PHFLUX/OUT04/VAL{{/code}} (%%)

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(% style="color:#000000" %)DAQ channel: {{code language="none"}}PBD.PHFLUX/TUNNEL.ENPULSEIC{{/code}}(%%)

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desc : calibrated average SASE Energy/pulse measured in the TUNNEL upstream the gas attenuator (ion current)

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units : microJ

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{{code language="none"}}/FL1/Photon Diagnostic/GMD/Pulse resolved energy/energy tunnel{{/code}}

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//always saved (PBD)//

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DOOCS prop : {{code language="none"}}TTF2.DAQ/PHFLUX/OUT34/VAL{{/code}}

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DAQ channel: {{code language="none"}}PBD.PHFLUX/TUNNEL.ENERGYPULSE.USER{{/code}}

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desc :Energy per pulse Tunnel (from e-) - the values are set to "0" if there was no SASE beam in the FEL

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units : a.u. (more or less µJ but need to be calibrated with the "Average energy" for good precision) **[[see here for help>>doc:FS-FLASH USER tmp.jddd-linked help pages.Calibrating the pulse resolved (electron) data from GMD.WebHome]]**

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{{code language="none"}}/FL1/Photon Diagnostic/GMD/Pulse resolved energy/energy tunnel (raw){{/code}}

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//always saved (PBD)//

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DOOCS prop : {{code language="none"}}TTF2.DAQ/PHFLUX/OUT14/VAL{{/code}}

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DAQ channel: {{code language="none"}}PBD.PHFLUX/TUNNEL.ENERGYPULSE.FF{{/code}}

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desc :Energy per pulse Tunnel (from e-) - uncorrected values. There are also values saved if there was no beam ... just background noise

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units : a.u. (more or less µJ but need to be calibrated with the "Average energy" for good precision) **[[see here for help>>doc:FS-FLASH USER tmp.jddd-linked help pages.Calibrating the pulse resolved (electron) data from GMD.WebHome]]**

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{{code language="none"}}/FL1/Photon Diagnostic/GMD/Average energy/energy BDA{{/code}}

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//always saved (PBD)//

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DOOCS prop : {{code language="none"}}TTF2.DAQ/PHFLUX/OUT05/VAL{{/code}}

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DAQ channel: {{code language="none"}}PBD.PHFLUX/BDA.ENPULSEIC{{/code}}

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desc : calibrated average SASE Energy/pulse measured in the BDA (in the experimental hall) after the attenuator (ion current)

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units : microJ

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{{code language="none"}}/FL1/Photon Diagnostic/GMD/Pulse resolved energy/energy BDA{{/code}}

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//always saved (PBD)//

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DOOCS prop : {{code language="none"}}TTF2.DAQ/PHFLUX/OUT35/VAL{{/code}}

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DAQ channel: {{code language="none"}}PBD.PHFLUX/BDA.ENERGYPULSE.USER{{/code}}

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desc :Energy per pulse BDA (from e-) - the values are set to "0" if there was no SASE beam in the FEL

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units : a.u. (more or less µJ but need to be calibrated with the "Average energy" for good precision) **[[see here for help>>doc:FS-FLASH USER tmp.jddd-linked help pages.Calibrating the pulse resolved (electron) data from GMD.WebHome]]**

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{{code language="none"}}/FL1/Photon Diagnostic/GMD/Pulse resolved energy/energy BDA (raw){{/code}}

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//always saved (PBD)//

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DOOCS prop : {{code language="none"}}TTF2.DAQ/PHFLUX/OUT15/VAL{{/code}}

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DAQ channel: {{code language="none"}}PBD.PHFLUX/BDA.ENERGYPULSE.FF{{/code}}

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desc :Energy per pulse BDA (from e-) - uncorrected values. There are also values saved if there was no beam ... just background noise

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units : a.u. (more or less µJ but need to be calibrated with the "Average energy" for good precision)** [[see here for help>>doc:FS-FLASH USER tmp.jddd-linked help pages.Calibrating the pulse resolved (electron) data from GMD.WebHome]]**

(% style="color:#000000; letter-spacing:0px" %)**NEW (since 2021) GMD data recording / evaluation (same format as FLASH2 and XFEL)**

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{{code language="none"}}/FL1/Photon Diagnostic/GMD/Average energy/energy tunnel{{/code}}

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//always saved (PBD)//

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(% style="color:#000000" %)DOOCS prop : {{code language="none"}}FLASH.FEL/XGM.PHOTONFLUX/FL1.TUNNEL/PHOTONFLUX.UJ{{/code}} (%%)

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(% style="color:#000000" %)DAQ channel: {{code language="none"}}FLASH.FEL/XGM.PHOTONFLUX/FL1.TUNNEL/PHOTONFLUX.UJ{{/code}}

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desc : calibrated average SASE Energy/pulse measured in the TUNNEL upstream the gas attenuator

units : microJ

{{code language="none"}}/FL1/Photon Diagnostic/GMD/Pulse resolved energy/energy tunnel{{/code}}

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//always saved (PBD)//

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(% style="color:#000000" %)DOOCS prop :

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{{code language="none"}}FLASH.FEL/XGM.INTENSITY/FL1.TUNNEL/INTENSITY.TD{{/code}}DAQ channel: {{code language="none"}}FLASH.FEL/XGM.INTENSITY/FL1.TUNNEL/INTENSITY.TD{{/code}}

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desc : Energy per pulse measured in the Tunnel. In addition measurement errors and beam position are included for EACH pulse in the pulse train !! (see below)

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units : a.u. (more or less µJ but need to be calibrated with the "Average energy" for good precision)** [[see here for help>>doc:FS-FLASH USER tmp.jddd-linked help pages.Calibrating the pulse resolved (electron) data from GMD.WebHome]]**

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For every pulse in the pulse train the information is saved:

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1. **Intensity per pulse** (a.u. (more or less µJ ))

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1. Intensity per pulse (auxillary GMD) - not used

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1. Position horizontal (mm, for a single pulse the position information may be very noisy - talk to your local contact)

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1. Position vertical (mm, for a single pulse the position information may be very noisy - talk to your local contact)

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1. **Intensity per pulse sigma** (a.u. (more or less µJ ), (% style="color:#000000" %)This parameter gives an indication of the error of the measurement of the pulse energy. This takes signal to noise, detector resolution, uncertainties in crossection etc into account. (it is NOT the measurement of the statistical fluctuation of the SASE pulses)(%%))

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1. Position horizontal sigma (mm, indicates the error (RMS, sigma) of the measurement according to known uncertainties and signal to noise)

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1. Position vertical sigma (mm, indicates the error (RMS, sigma) of the measurement according to known uncertainties and signal to noise)

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1. Combined warning and error flags

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The pulse energy and the error are plotted for the first bunch of the pulse trains saved in this

file

[[image:attach:image2021-2-9_10-51-6.png||height="250"]]

All values for the GMD are also available for the** BDA GMD **which is located in the experimental hall down stream the gas attenuator. If the attenuator is on the ratio between BDA and Tunnel signal shows the attenuation. **BUT NOTE** that the filter units are downstream the GMD. So if filters are used this influence is NOT measured by the GMD BDA !

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Besides pulse energy the GMD also provides information about the beam position

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{{code language="none"}}/FL1/Photon Diagnostic/GMD/Beam position/position BDA horizontal{{/code}}

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//always saved (PBD)//

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DOOCS prop : {{code language="none"}}FLASH.FEL/XGM.POSMON/FL1.BDA/IX.POS{{/code}}

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DAQ channel: {{code language="none"}}FLASH.FEL/XGM.POSMON/FL1.BDA/IX.POS{{/code}}

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desc :Beam position of the photon Beam determined by the GMD (BDA, x=horizontal)

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units : mm

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{{code language="none"}}/FL1/Photon Diagnostic/GMD/Beam position/position BDA vertical{{/code}}

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//always saved (PBD)//

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DOOCS prop : {{code language="none"}}FLASH.FEL/XGM.POSMON/FL1.BDA/IY.POS{{/code}}

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DAQ channel: {{code language="none"}}FLASH.FEL/XGM.POSMON/FL1.BDA/IY.POS{{/code}}

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desc :Beam position of the photon Beam determined by the GMD (BDA, y=vertical)

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units : mm

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{{code language="none"}}/FL1/Photon Diagnostic/GMD/Beam position/position tunnel horizontal{{/code}}

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//always saved (PBD)//

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DOOCS prop : {{code language="none"}}FLASH.FEL/XGM.POSMON/FL1.TUNNEL/IX.POS{{/code}}

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DAQ channel: {{code language="none"}}FLASH.FEL/XGM.POSMON/FL1.TUNNEL/IX.POS{{/code}}

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desc :Beam position of the photon Beam determined by the GMD (TUNNEL, x=horizontal)

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units : mm

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{{code language="none"}}/FL1/Photon Diagnostic/GMD/Beam position/position tunnel vertical{{/code}}

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//always saved (PBD)//

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DOOCS prop : {{code language="none"}}FLASH.FEL/XGM.POSMON/FL1.TUNNEL/IY.POS{{/code}}

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DAQ channel: {{code language="none"}}FLASH.FEL/XGM.POSMON/FL1.TUNNEL/IY.POS{{/code}}

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desc :Beam position of the photon Beam determined by the GMD (TUNNEL, y=vertical)

units : mm

==== Spectrometer (FLASH1) ====

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{{code language="none"}}/FL1/Photon Diagnostic/Wavelength/Tunnelspectrometer/wavelength{{/code}}

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_always saved (when Spectrum is measured !!) (PBD) _

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DOOCS prop : {{code language="none"}}TTF2.EXP/PHOTONWL.ML/WAVE_LENGTH/VAL.TD{{/code}}

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DAQ channel: {{code language="none"}}PBD.PHOTONWL.ML/WAVE_LENGTH{{/code}}

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desc : XUV Spectrum measured with the "tunnel spectrometer"

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units :

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{{code language="none"}}/FL1/Photon Diagnostic/Wavelength/Tunnelspectrometer/wavelength start value{{/code}}

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_always saved (when Spectrum is measured !!) (PBD) _

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DOOCS prop : {{code language="none"}}TTF2.EXP/PBD.PHOTONWL.ML/BSTART/VAL{{/code}}

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DAQ channel: {{code language="none"}}TTF2.EXP/PBD.PHOTONWL.ML/BSTART/VAL{{/code}}

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desc : start value (in nm) for the wavelength axis of the XUV Spectrum measured with the "tunnel spectrometer"

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units : nm

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{{code language="none"}}/FL1/Photon Diagnostic/Wavelength/Tunnelspectrometer/wavelength increment{{/code}}

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_always saved (when Spectrum is measured !!) (PBD) _

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DOOCS prop : ==

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DAQ channel: ==

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desc : increment value (in nm) for each pixel for the wavelength axis of the XUV Spectrum measured with the "tunnel spectrometer"

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units : nm

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{{code language="none"}}/FL1/Photon Diagnostic/Wavelength/PG2 spectrometer/photon energy{{/code}}

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//saved on DEMAND (PBD spectrometer stream)//

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DOOCS prop : ==

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DAQ channel: {{code language="none"}}PBD.PHOTONEN.ML/PHOTON_ENERGY{{/code}}

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desc : XUV Spectrum in eV measured with the "PG2 spectrometer"

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units :

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{{code language="none"}}/FL1/Photon Diagnostic/Wavelength/PG2 spectrometer/photon energy start value{{/code}}

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//saved on DEMAND (PBD spectrometer stream)//

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DOOCS prop : ==

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DAQ channel: ==

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desc : start value (in eV) for the wavelength axis of the XUV Spectrum measured with the "PG2 spectrometer"

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units : eV

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{{code language="none"}}/FL1/Photon Diagnostic/Wavelength/PG2 spectrometer/photon energy increment{{/code}}

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//saved on DEMAND (PBD spectrometer stream)//

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DOOCS prop : ==

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DAQ channel: ==

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desc : increment value (in eV) for each pixel for the wavelength axis of the XUV Spectrum measured with the "PG spectrometer"

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units : eV

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{{code language="none"}}/FL1/Photon Diagnostic/Wavelength/PG2 spectrometer/photon wavelength{{/code}}

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//saved on DEMAND (PBD spectrometer stream)//

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DOOCS prop : ==

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DAQ channel: {{code language="none"}}PHOTONEN.ML/PHOTON_WAVE_LEN{{/code}}

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desc : XUV Spectrum in nm measured with the "PG2 spectrometer"

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units :

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{{code language="none"}}/FL1/Photon Diagnostic/Wavelength/PG2 spectrometer/photon wavelength increment{{/code}}

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//saved on DEMAND (PBD spectrometer stream)//

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DOOCS prop : ==

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DAQ channel: ==

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desc : start value (in nm) for the wavelength axis of the XUV Spectrum measured with the "PG2 spectrometer"

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units : nm

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{{code language="none"}}/FL1/Photon Diagnostic/Wavelength/PG2 spectrometer/photon wavelength start value{{/code}}

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//saved on DEMAND (PBD spectrometer stream)//

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DOOCS prop : ==

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DAQ channel: ==

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desc : increment value (in nm) for each pixel for the wavelength axis of the XUV Spectrum measured with the "PG spectrometer"

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units : nm

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[[Contents>>doc:||anchor="Contents"]]

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==== Electron Beam properties (FLASH1) ====

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===== bunch charge =====

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{{code language="none"}}/FL1/Electron Diagnostic/Bunch charge/after undulator{{/code}}

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//always saved (PBD)//

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DOOCS prop : {{code language="none"}}FLASH.DIAG/TOROID.ML/12EXP/CHARGE.FLASH1{{/code}}

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DAQ channel: {{code language="none"}}FLASH.DIAG/TOROID/12EXP{{/code}}

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desc: electron bunch charge (FLASH1)

units: nC

=====

arrival time (BAM) =====

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* see: [[Info collection about the BAMs and how to use the BAM data>>doc:FS-FLASH USER tmp.jddd-linked help pages.Info collection for the BAM.WebHome||shape="rect"]]

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* The data format of the BAM has been completely altered in the 2022 shutdown

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* before 2022 BAMs were always saving the arrival time information for each 1µs bucked regardless if there were electrons in the accelerator or not. IN addition the arrival times for FL1 and FL2 were saved in the same parameter ...

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* THIS is now different. There are new parameters saving only the arrival times for pulses that go to FL1 and to FL2 (in detail: first time slot of the accelerator and second)

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* There has been also a renaming (and relocation) of the BAMs.

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** acc: 4DBC3 → FL0.DBC2

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** FL1: 1SFELC → FL1.SFELC

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** FL2: FL2XTDS → (% style="color:#172b4d" %)FL2.SEED5

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* for more Info: [[LINK to detailed infos from MSK>>doc:SDiag.How-to articles.BAM Data Structure.WebHome||shape="rect"]]

408

* [[Link a collection of papers related to the BAM and the analysis of pump-probe experiments>>doc:FS-FLASH USER tmp.Additional helpful things1.FLASH beamlines and instruments references.WebHome]]

409

* a recent [[talk about the working principle of the BAM>>attach:BAM-basics and outlook-2018_DESY-template_16-9Format.pdf]]

(% style="color:#000000" %)**Discontinued BAM data recording **

414

415

{{code language="none"}}/FL1/Electron Diagnostic/BAM/4DBC3/electron bunch arrival time (low charge){{/code}}

416

//always saved (PBD)//

417

DOOCS prop : {{code language="none"}}FLASH.SDIAG/BAM/4DBC3/LOW_CHARGE_ARRIVAL_TIME{{/code}}

418

DAQ channel: {{code language="none"}}FLASH.SDIAG/BAM.DAQ/4DBC3.LOW_CHARGE_ARRIVAL_TIME{{/code}}

419

desc: Electron bunch arrival time measured with the BAM inside the accelerator - however shows a very good correlation to the arrivaltime of the XUV pulses in the experiment (pulse resolved data).

420

units: ps (bigger numbers indicate later arrivaltime of the electrons)

421

422

423

{{code language="none"}}/FL1/Electron Diagnostic/BAM/1SFELC/electron bunch arrival time (low charge){{/code}}

424

//always saved (PBD)//

425

DOOCS prop : {{code language="none"}}FLASH.SDIAG/BAM/1SFELC/LOW_CHARGE_ARRIVAL_TIME{{/code}}

426

DAQ channel: {{code language="none"}}FLASH.SDIAG/BAM.DAQ/1SFELC.LOW_CHARGE_ARRIVAL_TIME{{/code}}

427

desc: Electron bunch arrival time measured with the BAM before the undulator (pulse resolved data). This one was newly installed in 2020.

428

units: ps (bigger numbers indicate later arrival time of the electrons)

429

430

431

====== **BAM FL0.DBC2**{{code language="none"}}{{/code}} ======

432

433

(% style="color:#ff6600" %)**DBC2**/electron bunch arrival time (HDF5 name not yet implemented - see zraw)(%%)

434

//always saved (PBD)//

435

{{code language="none"}}/FL1/Electron Diagnostic/BAM/ {{/code}}DOOCS prop : FLASH.SDIAG/BAM/**FL0.DBC2**/ARRIVAL_TIME.ABSOLUTE.SA1.COMP

436

DAQ (% style="color:#000000" %)channel: FLASH.SDIAG/BAM/**FL0.DBC2**/ARRIVAL_TIME.ABSOLUTE.SA1.COMP (%%)

437

desc: Electron bunch arrival time measured with the BAM inside the accelerator (after bunch compressor 2). The property contains only the arrival time of the bunches sent to FL1 (e.g. if there are 30 bunches in FL1 the first 30 values are the arrival time the remaining numbers still may have arbitrary numbers looking like a signal which they are not ). These are the same values as the "raw" data below - just "cleaned". The values show a very good correlation to the arrival time of the XUV pulses in the experiment (see help).

438

439

units: fs (bigger numbers (typically) indicate later arrival times of the electrons).

440

441

442

(% style="color:#ff6600" %)DBC2/electron bunch arrival time (raw) (HDF5 name not yet implemented - see zraw){{code language="none"}}/FL1/Electron Diagnostic/BAM/{{/code}}(%%)

443

//always saved (PBD)//

444

DOOCS prop : FLASH.SDIAG/BAM/FL0.DBC2/ARRIVAL_TIME.ABSOLUTE

445

DAQ channel: (% style="color:#000000" %)FLASH.SDIAG/BAM/FL0.DBC2/ARRIVAL_TIME.ABSOLUTE (%%)

446

desc: Electron bunch arrival time measured with the BAM inside the accelerator (after bunch compressor 2). Here the complete bunch train from the FEL is recorded (FLASH1 and FLASH2 pulses). Thus there are values from FLASH 1 in the first part. they may be separated by several "0" values if the reprate is different from 1 MHz ... - It shows a very good correlation to the arrival time of the XUV pulses in the experiment (see help).

447

units: fs (bigger numbers (typically) indicate later arrival times of the electrons).

448

449

450

(% style="color:#ff6600" %)DBC2/error (HDF5 name not yet implemented - see zraw){{code language="none"}}/FL1/Electron Diagnostic/BAM/{{/code}}(%%)

451

//always saved (PBD)//

452

DOOCS prop : FLASH.SDIAG/BAM/FL0.DBC2/ARRIVAL_TIM(% style="color:#000000" %)E.bamError.1(%%)

453

DAQ channel: (% style="color:#000000" %)FLASH.SDIAG/BAM/FL0.DBC2/ARRIVAL_TIME.BAMERROR.1(%%)

454

desc:(% style="letter-spacing:0.0px" %) status bit: 0 - data is valid; 1 - beam present; 2 - calibration ongoing; 3 - feedback enabled; 4 - feedback acting; mostly check for bit 0 == 1 is sufficient

455

456

457

(% style="color:#ff6600" %)DBC2/status (HDF5 name not yet implemented - see zraw){{code language="none"}}/FL1/Electron Diagnostic/BAM/{{/code}}(%%)

458

//always saved (PBD)//

459

DOOCS prop : FLASH.SDIAG/BAM/FL0.DBC2/ARRIVAL_TIM(% style="color:#000000" %)E..bamStatus.//1//(%%)

460

DAQ channel(% style="color:#000000" %): FLASH.SDIAG/BAM/FL0.DBC2/ARRIVAL_TIME.BAMSTATUS.1(%%)

461

desc: (% style="letter-spacing:0.0px" %) status bit: 0 - data is valid; 1 - beam present; 2 - calibration ongoing; 3 - feedback enabled; 4 - feedback acting; mostly check for bit 0 == 1 is sufficient

462

463

464

====== **BAM FL1.SFELC**{{code language="none"}}{{/code}} ======

465

466

(% style="font-family:SFMono-Medium,~"SF Mono~",~"Segoe UI Mono~",~"Roboto Mono~",~"Ubuntu Mono~",Menlo,Courier,monospace; letter-spacing:0.0px" %)/FL1/Electron Diagnostic/BAM/**SFELC**(% style="color:#ff6600" %)/electron bunch arrival time (HDF5 name not yet implemented - see zraw)

467

468

//always saved (PBD)//

469

(% style="color:#172b4d" %)**FL1.SFELC**(%%)

470

(% style="color:#000000" %)channel: FLASH.SDIAG/BAM/(% style="color:#172b4d" %)FL1.SFELC(% style="color:#000000" %)/ARRIVAL_TIME.ABSOLUTE.SA1.COMP

471

{{code language="none"}} DOOCS prop : FLASH.SDIAG/BAM//ARRIVAL_TIME.ABSOLUTE.SA1.COMPDAQ {{/code}}(% style="letter-spacing:0.0px" %)desc: Electron bunch arrival time measured with the BAM before the undulator (pulse resolved data). This one was newly installed in 2020.. The property contains only the arrival time of the bunches sent to FL1 (e.g. if there are 30 bunches in FL1 the first 30 values are the arrival time the remaining numbers still may have arbitrary numbers looking like a signal which they are not). These are the same values as the "raw" data below - just "cleaned". The values show a very good correlation to the arrival time of the XUV pulses in the experiment (see help).

472

units: fs (bigger numbers (typically) indicate later arrival times of the electrons).

(% style="color:#172b4d" %)SFELC(% style="color:#ff6600" %)/electron bunch arrival time (raw) (HDF5 name not yet implemented - see zraw){{code language="none"}}/FL1/Electron Diagnostic/BAM/{{/code}}(%%)

477

//always saved (PBD)//

478

DOOCS prop : FLASH.SDIAG/BAM/(% style="color:#172b4d" %)FL1.SFELC(%%)/ARRIVAL_TIME.ABSOLUTE

479

DAQ channel:** **(% style="color:#000000" %)FLASH.SDIAG/BAM/FL1.SFELC/ARRIVAL_TIME.ABSOLUTE (%%)

480

desc: Electron bunch arrival time measured with the BAM before the undulator (pulse resolved data). This one was newly installed in 2020. Here the complete bunch train from the FEL is recorded (FLASH1 and FLASH2 pulses). Thus there are values from FLASH 1 in the first part. they may be separated by several "0" values if the reprate is different from 1 MHz ... - It shows a very good correlation to the arrival time of the XUV pulses in the experiment (see help).

481

units: fs (bigger numbers (typically) indicate later arrival times of the electrons).

482

483

484

(% style="color:#172b4d" %)SFELC(% style="color:#ff6600" %)/error (HDF5 name not yet implemented - see zraw){{code language="none"}}/FL1/Electron Diagnostic/BAM/{{/code}}(%%)

485

//always saved (PBD)//

486

DOOCS prop : FLASH.SDIAG/BAM/(% style="color:#172b4d" %)FL1.SFELC(%%)/ARRIVAL_TIM(% style="color:#000000" %)E.bamError(%%)

487

DAQ channel(% style="color:#000000" %): FLASH.SDIAG/BAM/FL1.SFELC/ARRIVAL_TIME.BAMERROR(%%)

488

desc: If the value is 0 , the BAM is working well. If it is non-zero there is a problem !!

489

490

491

(% style="color:#172b4d" %)SFELC(% style="color:#ff6600" %)/status (HDF5 name not yet implemented - see zraw){{code language="none"}}/FL1/Electron Diagnostic/BAM/{{/code}}(%%)

492

//always saved (PBD)//

493

DOOCS prop : FLASH.SDIAG/BAM/(% style="color:#172b4d" %)FL1.SFELC(%%)/ARRIVAL_TIM(% style="color:#000000" %)E..bamStatus.//1//(%%)

494

DAQ chann(% style="color:#000000" %)el: FLASH.SDIAG/BAM/FL1.SFELC/ARRIVAL_TIME.BAMSTATUS.1(%%)

495

desc: status bit: 0 - data is valid; 1 - beam present; 2 - calibration ongoing; 3 - feedback enabled; 4 - feedback acting; mostly check for bit 0 == 1 is sufficient

===== electron beam profile =====

500

501

{{code language="none"}}/FL1/Electron Diagnostic/Electron bunch profile/TDS profile{{/code}}

502

//always saved (PBD) - IF LOLA is ON and ACTIVATED in the PBD DAQ (talk to expert)//

503

DOOCS prop : {{code language="none"}}TTF2.DAQ/BEAM.PROF.ML/BEAM.PROF/OUT.PROF.CCCED{{/code}}

504

DAQ channel: {{code language="none"}}PBD.BEAM.PROF.ML/DAQ.OUT.PROF.CCCED{{/code}}

505

desc: temporal profile of electron bunch, y axis in Ampers (FLASH1)

506

units: pixel

507

508

{{code language="none"}}/FL1/Electron Diagnostic/Electron bunch profile/Expert stuff/TDS calibration constant{{/code}}

509

//always saved (PBD) - IF LOLA is ON and ACTIVATED in the PBD DAQ (talk to expert)//

510

DOOCS prop : {{code language="none"}}TTF2.DAQ/BEAM.PROF.ML/BEAM.PROF/CALIB.CONST.T{{/code}}

511

DAQ channel: = PBD.BEAM.PROF.ML/CCT=

512

desc: TDS calibration constant for the x-axis of the profiles: fs per pixel

513

units: fs per pixel

514

515

{{code language="none"}}/FL1/Electron Diagnostic/Electron bunch profile/TDS profile width rms{{/code}}

516

//always saved (PBD) - IF LOLA is ON and ACTIVATED in the PBD DAQ (talk to expert)//

517

DOOCS prop : {{code language="none"}}TTF2.DAQ/BEAM.PROF.ML/BEAM.PROF/SOWS.W.CCTED{{/code}}

518

DAQ channel: {{code language="none"}}PBD.BEAM.PROF.ML/PROFWIDTHCCTED{{/code}}

519

desc: rms pulse width of the measures TDS electron bunch profile

520

units: fs

521

522

===== electron bunch energy =====

523

524

{{code language="none"}}/FL1/Electron Diagnostic/Electron energy/average electron energy{{/code}}

525

//always saved (PBD)//

526

DOOCS prop : {{code language="none"}}TTF2.DAQ/ENERGY.DOGLEG/E_INTRA_MEAN/VAL{{/code}}

527

DAQ channel: {{code language="none"}}PBD.ENERGY.DOGLEG/E_MEAN{{/code}}

528

desc: electron bunch energy (average over the bunch train)

529

units: (% class="twikiNewLink" %)MeV

530

531

{{code language="none"}}/FL1/Electron Diagnostic/Electron energy/pulse resolved energy{{/code}}

532

//always saved (PBD)//

533

DOOCS prop : {{code language="none"}}TTF2.DAQ/ENERGY.DOGLEG/E_SPECT/VAL.TD{{/code}}

534

DAQ channel: {{code language="none"}}PBD.ENERGY.DOGLEG/E_SPECT{{/code}}

535

desc: electron bunch energy bunch resolved

536

units: (% class="twikiNewLink" %)MeV

537

538

539

{{code language="none"}}/FL1/Electron Diagnostic/Electron energy/wavelength bunch train average{{/code}}

540

//always saved (PBD)//

541

DOOCS prop : {{code language="none"}}TTF2.DAQ/ENERGY.DOGLEG/LAMBDA_MEAN/VAL{{/code}}

542

DAQ channel: {{code language="none"}}PBD.ENERGY.DOGLEG/LAMBDA_MEAN{{/code}}

543

desc: Wavelength calculated by the electron bunch energy (average over the bunch train) (FLASH1)

544

units: nm

545

546

[[Contents>>doc:||anchor="Contents"]]

547

548

549

==== Timing information, rep rate etc. (FLASH1) ====

550

551

===== bunch repetition rate =====

552

553

{{code language="none"}}/FL1/Timing/repetition rate{{/code}}

554

//always saved (PBD)//

555

DOOCS prop : {{code language="none"}}FLASH.DIAG/TIMER/FLASHCPUTIME1.0/REP_RATE_KHZ.1{{/code}}

556

DAQ channel: {{code language="none"}}TTF2.UTIL/LASER.CONTROL/GUN/PULSE_FREQ{{/code}}

557

desc: repetition rate of the bunches / pulses within the burst (FLASH1)

558

units: kHz

559

560

===== set number of pulses =====

561

562

(% style="color:#ff6600" %)(HDF5 name not yet implemented - see zraw)(% style="color:#ff0000" %){{code language="none"}}/FL1/Timing/set number of bunches {{/code}}(%%)

563

//always saved (PBD)//

564

DOOCS prop : {{code language="none"}}FLASH.DIAG/TIMINGINFO/TIME1.BUNCH_FIRST_INDEX.1 [4th number]{{/code}}

565

DAQ channel: {{code language="none"}}FLASH.DIAG/TIMINGINFO/TIME1.BUNCH_FIRST_INDEX.1 [4th number]{{/code}}

566

desc: Number of bunches set in the control (timing) system. The property contains 4 numbers. the last one is the number of pulses (see also [[doc:FLASH.Timing properties]] (internal link)). If pulses are used for diagnostic of the protection system of the accelerator limits the number of bunches to be accelerated and thus the actual number of pulses may be smaller than the set one

567

units:

568

569

===== actual number of pulses =====

570

571

{{code language="none"}}/FL1/Timing/actual number of bunches{{/code}}

572

//always saved (PBD)//

573

DOOCS prop : {{code language="none"}}FLASH.DIAG/TOROID.ML/12EXP/NUMBEROFBUNCHES.FLASH1{{/code}}

574

DAQ channel: {{code language="none"}}TTF2.DIAG/PBD.TOROID.ML/12EXP{{/code}}

575

desc: Number of bunches measured BEHIND the undulator. If pulses are used for diagnostic of the protection system of the accelerator limits the number of bunches to be accelerated this is the actual number that created XUV radiation.The number is calculated by the DAQ middle layer server, (FLASH1)

576

units:

577

578

===== actual pulse pattern recorded after the undulator =====

579

580

{{code language="none"}}/FL1/Timing/Bunch pattern/pattern after undulator{{/code}}

581

//always saved (PBD)//

582

DOOCS prop : {{code language="none"}}TTF2.DIAG/PBD.TOROID.ML/12EXP/CHARGE.TD{{/code}}

583

DAQ channel: {{code language="none"}}TTF2.DIAG/PBD.TOROID.ML/12EXP{{/code}}

584

desc: The bunch pattern as function of time in a burst recorded by toroid diagnostic BEHIND the undulator. (FLASH1)

units:

===== Train ID =====

{{code language="none"}}/Timing/train ID{{/code}}

590

//always saved (PBD)//

591

DOOCS prop : {{code language="none"}}none{{/code}}

592

DAQ channel: {{code language="none"}}none{{/code}}

593

desc: Each 10 Hz burst has its unique train ID. For the HDF5 data set the ID is the same for all parameters with the same index (note camera images may be shifted by 1 ID - talk to the experts !)

594

units:

595

596

===== (% style="color:#e67e22" %)Train time(%%) =====

597

598

(% style="color:#e67e22" %){{code language="none"}}/Timing/train time{{/code}}

599

desc:Local time as array of day, hour, minute, second, and centisecond. This data set is meant for visualization purposes only. For correlations use the train ID or the Unix time of the time stamp

600

units: d h min s cs

601

602

(% style="color:#e67e22" %){{code language="none"}}/Timing/time stamp{{/code}}

603

desc:first column: Local time in unix time. To get day, hour, minute, second you can use unix: e.g. date ~-~-date='@1553617729' or matlab, python etc

604

second column: microseconds

605

third column: Train ID of FLASH

606

607

currently it is saved as Unix time in : /zraw/FLASH.DIAG/TIMINGINFO/TIME1.BUNCH_FIRST_INDEX.1/dGroup/time

import time

# epoch time is found in /zraw/FLASH.DIAG/TIMINGINFO/TIME1.BUNCH_FIRST_INDEX.1/dGroup/time #!!! a leading 1 has to be added !!!

613

# The time and date of the start of the data taking in the HDF file is encoded in the filename - to roughly check the time

614

epoch_time = 1709051499.17 # Replace with your epoch time

615

616

formatted_time = time.strftime('%Y-%m-%d %H:%M:%S', time.gmtime(epoch_time))

617

print(formatted_time)

|(((

)))

[[Contents>>doc:||anchor="Contents"]]

625

626

==== Pump Probe Laser (FLASH1) ====

627

628

**PIGLET (PG laser)**

629

630

**{{code language="none"}}/FL1/Experiment/Pump probe laser{{/code}}**

631

632

633

list of saved parameters status May 2024 (up to now the parameters can be found in /zraw/ ... )

Download the PDF:

/FL1/Experiment/Pump probe laser/laser attenuation

646

647

648

//always saved (PBD)//

649

DOOCS prop : {{code language="none"}}TTF2.FEL/PPDELAYCAL/PPDELAYCAL/ROT2.CURRENT{{/code}}

650

DAQ channel: {{code language="none"}}TTF2.FEL/PPDELAYCAL/PPDELAYCAL/ROT2.CURRENT{{/code}}

651

desc: attenuation of the PPLaser (rotation of a waveplate)

652

units : 0 no transmission , 1: full transmission

653

654

655

{{code language="none"}}/FL1/Experiment/Pump probe laser/laser delay{{/code}}

656

//always saved (PBD)//

657

DOOCS prop : {{code language="none"}}TTF2.FEL/PPDELAYCAL/PPDELAYCAL/DLY1.CURRENT{{/code}}

658

DAQ channel: {{code language="none"}}TTF2.FEL/PPDELAYCAL/PPDELAYCAL/DLY1.CURRENT{{/code}}

659

desc: delay of the Pump probe laser - measured by the read back position of the motor. only read out every secound ... better use the encoder

660

units : ps ( pos delay means IR comes later)

661

662

663

{{code language="none"}}/FL1/Experiment/Pump probe laser/delay line IK220.0/ENC.DELAY{{/code}}

664

//always saved (PBD)//

665

DOOCS prop : {{code language="none"}}TTF2.FEL/DELLINE.ENC/IK220.0/ENC.DELAY{{/code}}

666

DAQ channel: {{code language="none"}}TTF2.FEL/DELLINE.ENC/IK220.0:ENC.DELAY{{/code}}

667

subsystem: {{code language="none"}}DELLINE.ENC{{/code}} desc : delay of the Pump probe laser - measured by an encoder. The position is read out with 10Hz train synchronized and should be used to determine the actual laser delay (the motor position is only read out about every second

668

units : ps ( pos delay means IR comes later)

669

670

671

{{code language="none"}}/FL1/Experiment/Pump probe laser/Synchronization/timing jitter RMS GECCO{{/code}}

672

//always saved (PBD)//

673

DOOCS prop : {{code language="none"}}FLASH.SYNC/F1PPL.LASER_LOCK/28C.F1PPL1.CONTROLLER/ADV_CTRL_MANAGER.0.PID_INPUT_JITTER.2.RD{{/code}}

674

DAQ channel: {{code language="none"}}FLASH.SYNC/F1PPL.LASER_LOCK/28C.F1PPL1.CONTROLLER/ADV_CTRL_MANAGER.0.PID_INPUT_JITTER.2.RD{{/code}}

675

desc: rms jitter of the GECCO (% class="twikiNewLink" %)TiSa(%%) Oscillator units: fs

676

677

678

{{code language="none"}}/FL1/Experiment/Pump probe laser/streak camera delay time{{/code}}

679

//always saved (PBD)//

680

DOOCS prop : {{code language="none"}}TTF2.FEL/TDOLFEL/TDOLFEL/STREAK.CAM.TIME{{/code}}

681

DOOCS prop : {{code language="none"}}TTF2.FEL/TDOLFEL/TDOLFEL/STREAK.CAM.TIME{{/code}}

682

desc: delay time between the optical laser and the FEL units: ps

[[Contents>>doc:||anchor="Contents"]]

687

688

689

==== User Data (FLASH1) ====

690

691

The data saved specifically for detectors at an experiment will show up in /Experiment/ there is a large number of options for cameras or monitoring of slow properties (motor positions etc) for user experiments. For details please ask your local contact.

692

693

NOTE: If parameters for an experiment are included on short notice the correct naming in the HDF5 may not be in time and the data will show up in /uncategorized/ with the DOOCS names

694

695

The most common and permanently installed device used by experiment are our ADCs:

===== GHz ADCs =====

ADC traces of the (SPDevices 412) GHZ ADCs available for the users . More information about the ADCs can be found** [[here>>doc:FS-FLASH USER tmp.Data Acquisition and controls 1.Controls (DOOCS, jDDD,\.\.\.).MTCA ADCs.WebHome]]**

700

//saved on DEMAND in the user DAQ//

701

\\The HDF5 names for the ADC traces are depending on the beamline :

702

\\PG Beamline:

703

{{code language="none"}}/FL1/Experiment/PG/ADQ412 GHz ADC/CH00/TD{{/code}}

704

{{code language="none"}}/FL1/Experiment/PG/ADQ412 GHz ADC/CH01/TD{{/code}}

705

{{code language="none"}}/FL1/Experiment/PG/ADQ412 GHz ADC/CH02/TD{{/code}}

706

{{code language="none"}}/FL1/Experiment/PG/ADQ412 GHz ADC/CH03/TD{{/code}}

707

708

BL Beamlines:

709

{{code language="none"}}/FL1/Experiment/BL1/ADQ412 GHz ADC/CH00/TD{{/code}}

710

{{code language="none"}}/FL1/Experiment/BL1/ADQ412 GHz ADC/CH01/TD{{/code}}

711

{{code language="none"}}/FL1/Experiment/BL1/ADQ412 GHz ADC/CH02/TD{{/code}}

712

{{code language="none"}}/FL1/Experiment/BL1/ADQ412 GHz ADC/CH03/TD{{/code}}

713

\\{{code language="none"}}/FL1/Experiment/BL2/ADQ412 GHz ADC/CH00/TD{{/code}}

714

{{code language="none"}}/FL1/Experiment/BL2/ADQ412 GHz ADC/CH01/TD{{/code}}

715

\\{{code language="none"}}/FL1/Experiment/BL3/ADQ412 GHz ADC/CH02/TD{{/code}}

716

{{code language="none"}}/FL1/Experiment/BL3/ADQ412 GHz ADC/CH03/TD{{/code}}

717

718

DOOCS prop : {{code language="none"}}FLASH.FEL/ADC.ADQ.PG/EXP1.CH00/CH00.TD or CH00.DAQ.TD{{/code}}

719

here the {{code language="none"}}CH00.TD{{/code}} is the full ADC trace as it is sampled ( typically several 100.000 samples per pulse train) while the {{code language="none"}}CH00.DAQ.TD{{/code}} trace only has the number of samples which are sent to the DAQ OR if //grouping// is activated the {{code language="none"}}CH00.DAQ.TD{{/code}} contains only the grouped spectra. To read the ADC trace with an online analysis program the {{code language="none"}}CH00.DAQ.TD{{/code}} is used preferably.

720

DAQ channel: {{code language="none"}}FLASH.FEL/ADC.ADQ.PG/EXP1.CH00{{/code}}

721

722

In addition there are also additional parameters saved like:

723

724

* {{code language="none"}}sample frequency{{/code}}: it shows the sample frequency in MHz (number of samples per µs). NOTE: the clock of the ADC is NOT synchronized to the FLASH timing system. Thus the number of samples between bunches in the bunch train may be not integer numbers which will be show up for long bunch trains.

725

* {{code language="none"}}number of samples{{/code}}: total number of samples recorded for each 10 Hz trigger

726

* {{code language="none"}}error (ADC):{{/code}}0 indicates that there was no error

===== MHz ADCs =====

similar to the GHz ADCs the MHz ADCs are saved with HDF5 names like:

731

{{code language="none"}}/FL1/Experiment/BL1/SIS8300 100MHz ADC/CH2/TD{{/code}}

732

DOOCS prop : FLASH.FEL/ADC.SIS.BL1/EXP1.CH02/CH00.TD

733

DAQ channel: : FLASH.FEL/ADC.SIS.BL1/EXP1.CH02

734

735

In addition there are also additional parameters saved like:

736

737

* {{code language="none"}}sample frequency{{/code}}: it shows the sample frequency in MHz (number of samples per µs). NOTE: the clock of the ADC is NOT synchronized to the FLASH timing system. Thus the number of samples between bunches in the bunch train may be not integer numbers which will be show up for long bunch trains.

738

* {{code language="none"}}number of samples{{/code}}: total number of samples recorded for each 10 Hz trigger

739

740

[[Contents>>doc:||anchor="Contents"]]

=== FLASH2 ===

There is analog to FLASH1 a permanently running "PhotonDagnostic DAQ FLASH2" (PBD2) and 2 User DAQs

748

749

==== Beamline info (FLASH2) ====

750

751

{{code language="none"}}/FL2/Beamlines/Attenuator/pressure {{/code}}

752

(% style="color:#000000" %)//always saved (PBD2)// (%%)

753

(% style="color:#000000" %)DOOCS prop : {{code language="none"}}FLASH.FEL/ATT.GAS_DOSING/FL2.HALL/PRESSURE{{/code}} (%%)

754

(% style="color:#000000" %)DAQ channel: {{code language="none"}}FLASH.FEL/ATT.GAS_DOSING/FL2.HALL/PRESSURE{{/code}} (%%)

755

(% style="color:#000000" %)desc: set pressure in the gas attenuator (%%)

756

(% style="color:#000000" %)units: mbar

757

758

{{code language="none"}}/FL2/Beamlines/FL20/Shutter/open{{/code}}

759

//always saved (PBD2)//

760

DOOCS prop : {{code language="none"}}FLASH.FEL/ADC.SIS.FL2FS/FL20.SHUTTER/CH00.TD{{/code}}

761

DAQ channel: {{code language="none"}}FLASH.FEL/ADC.SIS.FL2FS/FL20.SHUTTER{{/code}}

762

desc: BL Beamline Fast shutter state: 1 is open, 0 is closed ( for technical reasons there are 100 vales of this state saved ...)

units: none

{{code language="none"}}/FL2/Beamlines/Filter wheel/position wheel 1{{/code}}

767

//always saved (PBD2)//

768

DOOCS prop : {{code language="none"}}FLASH.FEL/FL20H.PH.MOTOR/MOTOR1.MOT3/FPOS{{/code}}

769

DAQ channel: FLASH.FEL/FL20H.PH.MOTOR/MOTOR1.MOT3/FPOS

770

desc: Position of the BL filter wheel 1 - to correlate with the filter material please look **[[here>>doc:FS-FLASH USER tmp.jddd-linked help pages.Filter-Units.Filter wheels in FLASH1 and FLASH2.WebHome]]**

771

units: degree

772

773

/FL2/Beamlines/Filter wheel/position wheel 2

774

always saved (PBD2)

775

DOOCS prop : {{code language="none"}}FLASH.FEL/FL20H.PH.MOTOR/MOTOR2.MOT3/FPOS{{/code}}

776

DAQ channel: {{code language="none"}}FLASH.FEL/FL20H.PH.MOTOR/MOTOR2.MOT3/FPOS{{/code}}

777

desc: Position of the BL filter wheel 2 - to correlate with the filter material please look [[here>>doc:FS-FLASH USER tmp.jddd-linked help pages.Filter-Units.Filter wheels in FLASH1 and FLASH2.WebHome]]

units: degree

NOTE: Aperture positions in the beamline as well as the positions of the beam steering mirrors are also saved. for more Info contact your local contact

782

783

[[Contents>>doc:||anchor="Contents"]]

==== Photon Diagnostics SASE ([[XGMD>>url:http://photon-science.desy.de/facilities/flash/photon_diagnostics/gmd_intensity_and_position/index_eng.html||shape="rect"]] - FLASH2) ====

788

789

{{code language="none"}}/FL2/Photon Diagnostic/GMD/Average energy/energy tunnel{{/code}}

790

//always saved (PBD2)//

791

DOOCS prop : {{code language="none"}}FLASH.FEL/XGM.PHOTONFLUX/FL2.TUNNEL/PHOTONFLUX.UJ{{/code}}

792

DAQ channel:{{code language="none"}} FLASH.FEL/XGM.PHOTONFLUX/FL2.TUNNEL/PHOTONFLUX.UJ{{/code}}

793

desc : calibrated average ( ~~ 20 sec averaging time ) SASE Energy/pulse measured in the TUNNEL before the attenuator (ion current)

units : microJ

{{code language="none"}}/FL2/Photon Diagnostic/GMD/Pulse resolved energy/energy tunnel{{/code}}

798

//always saved (PBD2)//

799

DOOCS prop : {{code language="none"}}FLASH.FEL/XGM.INTENSITY/FL2.TUNNEL/INTENSITY.TD{{/code}}

800

DAQ channel: {{code language="none"}}FLASH.FEL/XGM.INTENSITY/FL2.TUNNEL/INTENSITY.TD{{/code}}

801

desc : Energy per pulse measured in the Tunnel (in front of the gas attenuator and the apertures in the Hall) In addition measurement errors and beam position are included for EACH pulse in the pulse train !! (see below)

802

units : a.u. (more or less µJ but need to be calibrated with the "Average energy" for good precision)** [[see here for help>>doc:FS-FLASH USER tmp.jddd-linked help pages.Calibrating the pulse resolved (electron) data from GMD.WebHome]]**

803

804

805

For every pulse in the pulse train the information is saved:

806

807

1. **Intensity per pulse** (a.u. (more or less µJ ))

808

1. Intensity per pulse (auxillary GMD) - not used

809

1. Position horizontal (mm, for a single pulse the position information may be very noisy - talk to your local contact)

810

1. Position vertical (mm, for a single pulse the position information may be very noisy - talk to your local contact)

811

1. **Intensity per pulse sigma** (a.u. (more or less µJ ), (% style="color:#000000" %)This parameter gives an indication of the error of the measurement of the pulse energy. This takes signal to noise, detector resolution, uncertainties in crossection etc into account. (it is NOT the measurement of the statistical fluctuation of the SASE pulses)(%%))

812

1. Position horizontal sigma (mm, indicates the error (RMS, sigma) of the measurement according to known uncertainties and signal to noise)

813

1. Position vertical sigma (mm, indicates the error (RMS, sigma) of the measurement according to known uncertainties and signal to noise)

814

1. Combined warning and error flags

815

816

The pulse energy and the error are plotted for the first bunch of the pulse trains saved in this

file

[[image:attach:image2021-2-9_10-51-6.png||height="250"]]

All values for the GMD are also available for the** HALL GMD **which is located in the experimental hall down stream the gas attenuator. If the attenuator is on the ratio between Hall and Tunnel signal shows the attenuation. **BUT NOTE** that the filter unit and the Aperture 4 are downstream the GMD. So if filters and aperture are used this influence is NOT measured by the GMD hall !

827

828

829

Besides pulse energy the GMD also provides information about the beam position

830

831

832

{{code language="none"}}/FL2/Photon Diagnostic/GMD/Average Beam position/position tunnel horizontal{{/code}}

833

//always saved (PBD2)//

834

DOOCS prop : {{code language="none"}}FLASH.FEL/XGM.POSMON/FL2.TUNNEL/IX.POS{{/code}}

835

DAQ channel: {{code language="none"}}FLASH.FEL/XGM.POSMON/FL2.TUNNEL/IX.POS{{/code}}

836

desc : the Average ( ~~ 20 sec averaging time ) Beam position of the photon Beam determined by the GMD (tunnel, x=horizontal)

units : mm

{{code language="none"}}/FL2/Photon Diagnostic/GMD/Average Beam position/position tunnel vertical{{/code}}

841

//always saved (PBD2)//

842

DOOCS prop : {{code language="none"}}FLASH.FEL/XGM.POSMON/FL2.TUNNEL/IY.POS{{/code}}

843

DAQ channel: {{code language="none"}}FLASH.FEL/XGM.POSMON/FL2.TUNNEL/IY.POS{{/code}}

844

desc : the Average ( ~~ 20 sec averaging time ) Beam position of the photon Beam determined by the GMD (tunnel, x=horizontal)

units : mm

/FL2/Photon Diagnostic/GMD/Pulse resolved beam position/position tunnel x

849

always saved (PBD2)

850

DOOCS prop : FLASH.FEL/XGM.BPM/FL2.HALL/X.TD

851

DAQ channel: FLASH.FEL/XGM.BPM/FL2.HALL:2

852

desc: Besides the well calibrated averaged beam position information there is also the option to measure the beam position on a single bunch level. HOWEVER this methide needs a perfectly adjusted signal level (talk to your local contact !!) and also then the signal to noise is rather small and one needs some averaging ... BUT with this option one can determine if there was a spatial slope on a burst (say forst bunches were lower than the last ones or so ...)

853

units : mm

854

855

(x=horizontal, y = vertial)

856

857

again the same parameter set is available for the **HALL GMD**

==== Photon Diagnostics OPIS[[ >>url:http://photon-science.desy.de/facilities/flash/photon_diagnostics/opis_spectrometer/index_eng.html||shape="rect"]](FLASH2) ====

862

863

for more info see:** [[ OPIS>>url:http://photon-science.desy.de/facilities/flash/photon_diagnostics/opis_spectrometer/index_eng.html||shape="rect"]]**

864

865

(The OPIS hall is not installed yet ...)

866

867

868

{{code language="none"}}/FL2/Photon Diagnostic/Wavelength/OPIS tunnel/Processed/mean photon energy{{/code}}

869

// saved opon request (PBD2)//

870

DOOCS prop : {{code language="none"}}FLASH.UTIL/STORE/FL2.TUNNEL.OPIS/VAL042{{/code}}

871

DAQ channel:{{code language="none"}} FLASH.UTIL/STORE/FL2.TUNNEL.OPIS/VAL042{{/code}}

872

desc : mean photon energy ( ~~ 1 sec averaging time ) measured in the TUNNEL for a specific bunch out of the bunch train (via photoelectron spectroscopy)

units : eV

{{code language="none"}}/FL2/Photon Diagnostic/Wavelength/OPIS tunnel/Processed/mean wavelength{{/code}}

877

// saved opon request (PBD2)//

878

DOOCS prop : {{code language="none"}}FLASH.UTIL/STORE/FL2.TUNNEL.OPIS/VAL040{{/code}}

879

DAQ channel:{{code language="none"}} FLASH.UTIL/STORE/FL2.TUNNEL.OPIS/VAL040{{/code}}

880

desc : mean wavelength ( ~~ 1 sec averaging time ) measured in the TUNNEL for a specific bunch out of the bunch train (via photoelectron spectroscopy)

units : nm

{{code language="none"}}/FL2/Photon Diagnostic/Wavelength/OPIS tunnel/Processed/number of analyzed bunch (in older version this can be found in OPIS tunnel/Expert stuff/General operation parameters/){{/code}}

885

// saved opon request (PBD2)//

886

DOOCS prop : {{code language="none"}}FLASH.UTIL/STORE/FL2.TUNNEL.OPIS/VAL060{{/code}}

887

DAQ channel:{{code language="none"}} FLASH.UTIL/STORE/FL2.TUNNEL.OPIS/VAL060{{/code}}

888

desc : The bunch number of the bunch used for the wavelength calculation

units :

If Opis is running typically on the the averaged data is saved. For several experiments it may make sense to save the information for each single bunch. This is up to now done by saving the complete ADC trace of the TOF setup. This is a huge amount of data and needs processing. This has to be performed after the beamtime in close contact to [[Markus Braune>>mailto:markus.braune@desy.de||shape="rect"]] ( responsible for [[OPIS>>url:http://photon-science.desy.de/facilities/flash/photon_diagnostics/opis_spectrometer/index_eng.html||shape="rect"]])

893

894

895

In case OPIS was not operating there is still information about the **set wavelength** for the undulators (see below) which may differ by up to 5 % from the actual wavelength due to different settings in the FEL ...

==== Electron Beam properties (FLASH2) ====

900

901

===== bunch charge =====

902

903

{{code language="none"}}/FL2/Electron Diagnostic/Bunch charge/after undulator{{/code}}

904

//always saved (PBD2)//

905

DOOCS prop : {{code language="none"}}FLASH.DIAG/PBD2.TOROID.ML/9FL2BURN/CHARGE.FLASH2{{/code}}

906

DAQ channel: {{code language="none"}}FLASH.DIAG/PBD2.TOROID.ML/9FL2BURN/CHARGE.FLASH2{{/code}}

907

desc: electron bunch charge FLASH2 (average value for each bunchtrain).

units: nC

===== electron bunch energy =====

912

913

{{code language="none"}}/FL2/Electron Diagnostic/Electron energy/energy of first bunch/behind undulators{{/code}}

914

//always saved (PBD2)//

915

DOOCS prop : {{code language="none"}}FLASH.DIAG/BEAM_ENERGY_MEASUREMENT/FL2XTDS/ENERGY.FLASH2{{/code}}

916

DAQ channel: (% style="color:#5e6c84" %)TTF2.DAQ/PBD2.BEAM.ENERGY.MEAS.ML.COPY/FL2XTDS.ENERGY.FLASH2{{code language="none"}}{{/code}}(%%)

917

desc: electron bunch energy measured behind the undulator. Data is saved with 10 Hz - BUT (for computation reasons) only the energy of the FIRST bunch is recorded. The data is also available for (% style="color:#5e6c84" %)extraction and septum in the beginning of FLASH2

918

919

(% style="letter-spacing:0.0px" %)units: (% class="twikiNewLink" %)MeV

920

921

922

(% style="color: rgb(94, 108, 132); font-weight: 600; letter-spacing: 0px;" %)

923

===== undulator settings =====

924

925

{{code language="none"}}/FL2/Electron Diagnostic/Undulator setting/set wavelength{{/code}}

926

//always saved (PBD2)//

927

DOOCS prop : {{code language="none"}}TTF2.FEEDBACK/FL2.WAVELENGTHCONTROL/FLASH2/WAVELENGTH{{/code}}

928

DAQ channel: {{code language="none"}}TTF2.FEEDBACK/FL2.WAVELENGTHCONTROL/FLASH2/WAVELENGTH{{/code}}

929

desc: Set value for the anticipated wavelength . This parameter is used to set the undulator gap. It may however deviate from the actual wavelength by several % ...

930

units: nm

931

932

{{code language="none"}}/FL2/Electron Diagnostic/Undulator setting/SASE14 gap{{/code}}

933

//always saved (PBD2)//

934

DOOCS prop : {{code language="none"}}FLASH.UTIL/FL2.UND.MOTOR/FL2SASE14/GAP{{/code}}

935

DAQ channel: {{code language="none"}}FLASH.UTIL/FL2.UND.MOTOR/FL2SASE14/GAP{{/code}}

936

desc: gap value of the undulators. This can be used to follow up how many undulators were closed and if there was a taper

937

units: mm

938

939

The gap values are saved for all 12 undulators (Nr 3 to 14). Undulator 14 is the one closest to the experimental hall.

940

941

=====

942

arrival time (BAM) =====

943

944

945

* see: [[Info collection about the BAMs and how to use the BAM data>>doc:FS-FLASH USER tmp.jddd-linked help pages.Info collection for the BAM.WebHome||shape="rect"]]

946

* The data format of the BAM has been completely altered in the 2022 shutdown

947

* before 2022 BAMs were always saving the arrival time information for each 1µs bucked regardless if there were electrons in the accelerator or not. IN addition the arrival times for FL1 and FL2 were saved in the same parameter ...

948

* THIS is now different. There are new parameters saving only the arrival times for pulses that go to FL1 and to FL2 (in detail: first time slot of the accelerator and second)

949

* There has been also a renaming (and relocation) of the BAMs.

950

** acc: 4DBC3 → FL0.DBC2

951

** FL1: 1SFELC → FL1.SFELC

952

** FL2: FL2XTDS → (% style="color:#172b4d" %)FL2.SEED5

953

* for more Info: [[LINK to detailed infos from MSK>>doc:SDiag.How-to articles.BAM Data Structure.WebHome||shape="rect"]]

954

* [[Link a collection of papers related to the BAM and the analysis of pump-probe experiments>>doc:FS-FLASH USER tmp.Additional helpful things1.FLASH beamlines and instruments references.WebHome]]

955

* a recent [[talk about the working principle of the BAM>>attach:BAM-basics and outlook-2018_DESY-template_16-9Format.pdf]]

(% style="color:#000000" %)**Discontinued BAM data recording **

960

961

{{code language="none"}}/FL2/Electron Diagnostic/BAM/8FL2XTDS/electron bunch arrival time (low charge){{/code}}

962

//always saved (PBD2)//

963

DOOCS prop : {{code language="none"}}FLASH.SDIAG/BAM/8FL2XTDS/LOW_CHARGE_ARRIVAL_TIME{{/code}}

964

DAQ channel: {{code language="none"}}FLASH.SDIAG/BAM.DAQ/8FL2XTDS.LOW_CHARGE_ARRIVAL_TIME{{/code}}

965

desc: Electron bunch arrival time measured with the BAM after the FLASH2 undulator (pulse resolved data)

966

units: ps (bigger numbers indicate later arrivaltime of the electrons)

967

968

**FL1**{{code language="none"}}//Electron Diagnostic/BAM/4DBC3/electron bunch arrival time (low charge){{/code}}

969

//always saved (PBD2)//

970

DOOCS prop : {{code language="none"}}FLASH.SDIAG/BAM/4DBC3/LOW_CHARGE_ARRIVAL_TIME{{/code}}

971

DAQ channel: {{code language="none"}}FLASH.SDIAG/BAM.DAQ/4DBC3.LOW_CHARGE_ARRIVAL_TIME{{/code}}

972

desc: Electron bunch arrival time measured with the BAM in the accelerator (pulse resolved data)

973

units: ps (bigger numbers indicate later arrivaltime of the electrons)

974

975

976

* The BAM 4DBC3 measures the arrivaltime of** FLASH 1 and FLASH2** in the same data set (thus also sorted in at /FL1/ !).

977

* The BAM 8FL2XTDS measures only for FLASH2 BUT has the same data structure as the other BAMS ... thus there are also (random) values in in the FLASH1 time slot

978

** Structure: The first values are for FLASH1 bunches. After a gap of about 70 micros ( 70 colums) with as entry for the switching between FLASH 1 and 2 the values for the electrons used in FLASH2 start. The start time of FLASH2 is also recorded in the DAQ. FLASH1 start time is for historic reasons 700. thus if e.g. the start time of FLASH2 ( property name see below) is 1200 it means that FLASH starts at column 500 (1200-700) ... .In case of doubt ask your local contact

979

* [[Link a collection of papers related to the BAM and the analysis of pump-probe experiments >>doc:FS-FLASH USER tmp.Additional helpful things1.FLASH beamlines and instruments references.WebHome]]

980

* [[LINK to detailed infos from MSK (may only work inside DESY network~[~[image:url:http://hasfweb.desy.de/pub/TWiki/TWikiDocGraphics/external-link.gif~|~|height="12" width="13"~]~]>>url:http://www.desy.de/~~mbock/pages/BAM_daq_channel_descriptions.html||shape="rect"]]

981

* a recent [[talk about the working principle of the BAM>>attach:BAM-basics and outlook-2018_DESY-template_16-9Format.pdf]]

====== **BAM FL0.DBC2**{{code language="none"}}{{/code}} ======

987

988

(% style="color:#ff6600" %)**DBC2**/electron bunch arrival time (HDF5 name not yet implemented - see zraw){{code language="none"}}/FL2/Electron Diagnostic/BAM/{{/code}}

989

990

991

/zraw/FLASH.SDIAG/BAM.DAQ/FL0.DBC2.ARRIVAL_TIME.ABSOLUTE.SA2.COMP/dGroup/

992

993

994

//always saved (PBD)//

995

**FL0.DBC2**

996

(% style="color:#000000" %)channel: FLASH.SDIAG/BAM/**FL0.DBC2**/ARRIVAL_TIME.ABSOLUTE.SA2.COMP

997

{{code language="none"}} DOOCS prop : FLASH.SDIAG/BAM//ARRIVAL_TIME.ABSOLUTE.SA2.COMPDAQ {{/code}}(% style="letter-spacing:0.0px" %)desc: Electron bunch arrival time measured with the BAM inside the accelerator (after bunch compressor 2). The property contains only the arrival time of the bunches sent to FL2 (e.g. if there are 30 bunches in FL2 the first 30 values are the arrival time the remaining numbers still may have arbitrary numbers looking like a signal which they are not0). These are the same values as the "raw" data below - just "cleaned". The values show a very good correlation to the arrival time of the XUV pulses in the experiment (see help).

998

units: fs (bigger numbers (typically) indicate later arrival times of the electrons).

999

1000

1001

(% style="color:#ff6600" %)DBC2/electron bunch arrival time (raw) (HDF5 name not yet implemented - see zraw){{code language="none"}}/FL2/Electron Diagnostic/BAM/{{/code}}

1002

1003

{{code language="none"}}/zraw/FLASH.SDIAG/BAM.DAQ/FL0.DBC2.ARRIVAL_TIME.ABSOLUTE.SA2/dGroup/{{/code}}

1004

//always saved (PBD)//

1005

{{code language="none"}}DOOCS prop : FLASH.SDIAG/BAM/FL0.DBC2/ARRIVAL_TIME.ABSOLUTE{{/code}}

1006

(% style="color:#000000" %)FLASH.SDIAG/BAM/FL0.DBC2/ARRIVAL_TIME.ABSOLUTE {{code language="none"}}DAQ channel: {{/code}}(%%)

1007

desc: Electron bunch arrival time measured with the BAM inside the accelerator (after bunch compressor 2). Here the complete bunch train from the FEL is recorded (FLASH1 and FLASH2 pulses). Thus there are values from FLASH 2 in the second part. they may be separated by several "0" values if the reprate is different from 1 MHz ... - It shows a very good correlation to the arrival time of the XUV pulses in the experiment (see help).

1008

units: fs (bigger numbers (typically) indicate later arrival times of the electrons).

1009

1010

1011

DBC2/error (% style="color:#f39c12" %)(HDF5 name not yet implemented - see zraw)(%%)/FL2/Electron Diagnostic/BAM/

1012

//always saved (PBD)//

1013

DOOCS prop : FLASH.SDIAG/BAM/FL0.DBC2/ARRIVAL_TIME.bamError.2

1014

DAQ channel: FLASH.SDIAG/BAM/FL0.DBC2/ARRIVAL_TIME.BAMERROR.2

1015

desc: If the value is 0 , the BAM is working well. If it is non-zero there is a problem !!

1016

1017

DBC2/status (% style="color:#e67e22" %)(HDF5 name not yet implemented - see zraw)(%%)/FL2/Electron Diagnostic/BAM/

1018

//always saved (PBD)//

1019

DOOCS prop : FLASH.SDIAG/BAM/FL0.DBC2/ARRIVAL_TIME.bamStatus.//2//

1020

DAQ channel: FLASH.SDIAG/BAM/FL0.DBC2/ARRIVAL_TIME.BAMSTATUS.2

1021

desc: status bit: 0 - data is valid; 1 - beam present; 2 - calibration ongoing; 3 - feedback enabled; 4 - feedback acting; mostly check for bit 0 == 1 is sufficient

====== **BAM FL2.SEED5**{{code language="none"}}{{/code}} ======

1026

1027

/FL2/Electron Diagnostic/BAM/**SEED5**(% style="color:#ff6600" %)/electron bunch arrival time (HDF5 name not yet implemented - see zraw)

1028

1029

(% style="color:#000000" %){{code language="none"}}/zraw/FLASH.SDIAG/BAM.DAQ/FL0.SEED5.ARRIVAL_TIME.ABSOLUTE.SA2.COMP/dGroup/{{/code}}

1030

1031

//always saved (PBD)//

1032

(% style="color:#172b4d" %)**FL2.SEED5**(%%)

1033

(% style="color:#000000" %)channel: FLASH.SDIAG/BAM/(% style="color:#172b4d" %)**FL2.SEED5**(% style="color:#000000" %)/ARRIVAL_TIME.ABSOLUTE.SA1.COMP

1034

{{code language="none"}} DOOCS prop : FLASH.SDIAG/BAM//ARRIVAL_TIME.ABSOLUTE.SA1.COMPDAQ {{/code}}(%%)desc: Electron bunch arrival time measured with the BAM before the undulator (pulse resolved data). This one was newly installed in 2020.. The property contains only the arrival time of the bunches sent to FL2 (e.g. if there are 30 bunches in FL2 the first 30 values are the arrival time the remaining numbers still may have arbitrary numbers looking like a signal which they are not). These are the same values as the "raw" data below - just "cleaned". The values show a very good correlation to the arrival time of the XUV pulses in the experiment (see help).

1035

units: fs (bigger numbers (typically) indicate later arrival times of the electrons).

(% style="color:#172b4d" %)SEED5(% style="color:#ff6600" %)/electron bunch arrival time (raw) (HDF5 name not yet implemented - see zraw){{code language="none"}}/FL2/Electron Diagnostic/BAM/{{/code}}

1040

1041

(% style="color:#000000" %){{code language="none"}}/zraw/FLASH.SDIAG/BAM.DAQ/FL0.SEED5.ARRIVAL_TIME.ABSOLUTE.SA2/dGroup/{{/code}}(%%)

1042

//always saved (PBD)//

1043

(% style="color:#172b4d" %)**FL2.SEED5**{{code language="none"}}DOOCS prop : FLASH.SDIAG/BAM//ARRIVAL_TIME.ABSOLUTE{{/code}}(%%)

1044

**~ **(% style="color:#000000" %)FLASH.SDIAG/BAM/(% style="color:#172b4d" %)**FL2.SEED5**(% style="color:#000000" %)/ARRIVAL_TIME.ABSOLUTE {{code language="none"}}DAQ channel:{{/code}}(%%)

1045

desc: Electron bunch arrival time measured with the BAM before the undulator (pulse resolved data). This one was newly installed in 2020. Here the complete bunch train from the FEL is recorded (FLASH1 and FLASH2 pulses). Thus there are values from FLASH 2 in the second part. they may be separated by several "0" values if the reprate is different from 1 MHz ... - It shows a very good correlation to the arrival time of the XUV pulses in the experiment (see help).

1046

units: fs (bigger numbers (typically) indicate later arrival times of the electrons).

1047

1048

1049

FL2.SEED5/error (% style="color:#f39c12" %)(HDF5 name not yet implemented - see zraw)(%%)/FL2/Electron Diagnostic/BAM/

1050

//always saved (PBD)//

1051

DOOCS prop : FLASH.SDIAG/BAM/FL2.SEED5/ARRIVAL_TIME.bamError.2

1052

DAQ channel: FLASH.SDIAG/BAM/FL2.SEED5/ARRIVAL_TIME.BAMERROR.2

1053

desc: If the value is 0 , the BAM is working well. If it is non-zero there is a problem !!

1054

1055

FL2.SEED5/status (% style="color:#e67e22" %)(HDF5 name not yet implemented - see zraw)(%%)/FL2/Electron Diagnostic/BAM/

1056

//always saved (PBD)//

1057

DOOCS prop : FLASH.SDIAG/BAM/FL2.SEED5/ARRIVAL_TIME.bamStatus.//2//

1058

DAQ channel: FLASH.SDIAG/BAM/FL2.SEED5/ARRIVAL_TIME.BAMSTATUS.2

1059

desc: status bit: 0 - data is valid; 1 - beam present; 2 - calibration ongoing; 3 - feedback enabled; 4 - feedback acting; mostly check for bit 0 == 1 is sufficient

1060

1061

1062

[[Contents>>doc:||anchor="Contents"]]

1063

1064

1065

==== Timing information, rep rate etc. (FLASH2) ====

1066

1067

===== start time of FLASH2 =====

1068

1069

{{code language="none"}}/FL2/Timing/start time flash2{{/code}}

1070

//always saved (PBD2)//

1071

DOOCS prop : {{code language="none"}}FLASH.DIAG/TIMER/FLASHCPUTIME1.0/BUNCH_POSITION.2{{/code}}

1072

DAQ channel: {{code language="none"}}FLASH.DIAG/TIMER/FLASHCPUTIME1.0/BUNCH_POSITION.2{{/code}}

1073

desc: The max 600 µs acceleration time of FLASH is devided between FLASH1 and FLASH2. This 600 µs window starts with FLASH1 (up to now) at a time"label" of 700 µs (for historic reasons). Thus the first bunch of FLASH 1 comes at "700" and the last possibel bunch comes at 1300 (700+600). After FLASH1 train is over ther is a about 70µs switching time with no bunches. Then comes the first FLASH2 bunch. Thus if e.g. the start time of FLASH2 is 1200 it means that FLASH2 starts at column 500 (1200-700) in the HDF5 files. (However for yet unknown reasons this may change by 2-3 colums ...)

1074

units: µs

1075

1076

===== bunch repetition rate =====

1077

1078

{{code language="none"}}/FL2/Timing/repetition rate{{/code}}

1079

//always saved (PBD2)//

1080

DOOCS prop : {{code language="none"}}FLASH.DIAG/TIMER/FLASHCPUTIME1.0/REP_RATE_KHZ.2{{/code}}

1081

DAQ channel: {{code language="none"}}FLASH.DIAG/TIMER/FLASHCPUTIME1.0/REP_RATE_KHZ.2{{/code}}

1082

desc: repetition rate of the bunches / pulses within the burst (FLASH2)

units: kHz

===== set number of pulses =====

1087

1088

(% style="color:#ff6600" %)(HDF5 name not yet implemented - see zraw)(% style="color:#ff0000" %){{code language="none"}}/FL2/Timing/set number of bunches {{/code}}(%%)

1089

//always saved (PBD2)//

1090

DOOCS prop : {{code language="none"}}FLASH.DIAG/TIMINGINFO/TIME1.BUNCH_FIRST_INDEX.2 [4th number]{{/code}}

1091

DAQ channel: {{code language="none"}}FLASH.DIAG/TIMINGINFO/TIME1.BUNCH_FIRST_INDEX.2 [4th number]{{/code}}

1092

desc: Number of bunches set in the control (timing) system. The property contains 4 numbers. the last one is the number of pulses (see also [[doc:FLASH.Timing properties]] (internal link)). If pulses are used for diagnostic of the protection system of the accelerator limits the number of bunches to be accelerated and thus the actual number of pulses may be smaller than the set one

1093

units:

1094

1095

===== actual number of pulses =====

1096

1097

{{code language="none"}}/FL1/Timing/actual number of bunches{{/code}}

1098

//always saved (PBD2)//

1099

DOOCS prop : {{code language="none"}}FLASH.DIAG/PBD2.TOROID.ML/3GUN/NUMBEROFBUNCHES.FLASH2{{/code}}

1100

DAQ channel: {{code language="none"}}FLASH.DIAG/PBD2.TOROID.ML/3GUN/NUMBEROFBUNCHES.FLASH2{{/code}}

1101

desc: Number of bunches measured BEHIND the undulator. If pulses are used for diagnostic of the protection system of the accelerator limits the number of bunches to be accelerated this is the actual number that created XUV radiation.The number is calculated by the DAQ middle layer server, (FLASH2)

1102

units:

1103

1104

===== actual pulse pattern recorded after the undulator =====

1105

1106

{{code language="none"}}/FL1/Timing/Bunch pattern/pattern after undulator{{/code}}

1107

//always saved (PBD2)//

1108

DOOCS prop : {{code language="none"}}FLASH.DIAG/PBD2.TOROID.ML/9FL2BURN.PULSEPATTERN{{/code}}

1109

DAQ channel: {{code language="none"}}FLASH.DIAG/PBD2.TOROID.ML/9FL2BURN.PULSEPATTERN{{/code}}

1110

desc: The bunch pattern as function of time in a burst recorded by toroide diagnostic BEHIND the undulator. (FLASH2)

units:

===== Train ID =====

{{code language="none"}}/Timing/train ID{{/code}}

1116

//always saved (PBD2)//

1117

DOOCS prop : {{code language="none"}}none{{/code}}

1118

DAQ channel: {{code language="none"}}none{{/code}}

1119

desc: Each 10 Hz burst has its unique train ID. For the HDF5 dataset the ID is the same for all parameters with the same index (note camera images may be shifted by 1 ID - talk to the experts !)

1120

units:

1121

1122

===== Train time =====

1123

1124

//always saved (PBD2)//

1125

{{code language="none"}}/Timing/train time{{/code}}

1126

desc:Local time as array of day, hour, minute, second, and centisecond. This dataset is meant for visualisation purposes only. For correlations use the train ID or the Unix time of the time stamp

units: d h min s cs

/Timing/time stamp

//always saved (PBD2)//

1134

desc: first column: Local time in unix time. To get day, hour, minute, second you can use unix: e.g. date ~-~-date='@1553617729' or matlab, python etc

1135

second column: microseconds

1136

third column: Train ID of FLASH

1137

1138

[[Contents>>doc:||anchor="Contents"]]

1139

1140

1141

==== User Data (FLASH2) ====

1142

1143

The data saved specifically for detectors at an experiment will show up in /Experiment/ there is a large number of options for cameras or monitoring pslow properties (motor positons etc) for user experiments. For details please ask your local contact.

1144

1145

NOTE: If parameters for an experiment are included on short notice the correct naming in the HDF5 may not be in time and the data will show up in /uncategorized/ with the DOOCS names

1146

1147

The most common and permanently installed device used by experiment are our ADCs:

===== GHz ADCs =====

ADC traces of the (SPDevices 412) GHZ ADCs available for the users . More information about the ADCs can be found** [[here>>doc:FS-FLASH USER tmp.Data Acquisition and controls 1.Controls (DOOCS, jDDD,\.\.\.).MTCA ADCs.WebHome]]**

1152

//saved on DEMAND in the user DAQ//

1153

\\Up to now there are 4 channels available at FL24

1154

\\\\{{code language="none"}}/FL2/Experiment/MTCA-EXP1/ADQ412 GHz ADC/CH00/TD{{/code}}

1155

{{code language="none"}}/FL2/Experiment/MTCA-EXP1/ADQ412 GHz ADC/CH01/TD{{/code}}

1156

\\{{code language="none"}}/FL2/Experiment/MTCA-EXP1/ADQ412 GHz ADC/CH02/TD{{/code}}{{code language="none"}}/FL2/Experiment/MTCA-EXP1/ADQ412 GHz ADC/CH03/TD{{/code}}

1157

1158

1159

DOOCS prop : {{code language="none"}}FLASH.FEL/ADC.ADQ.FL2EXP1/FL2EXP1.CH00/CH00.TD or CH00.DAQ.TD{{/code}}

1160

here the {{code language="none"}}CH00.TD{{/code}} is the full ADC trace as it is sampled ( typically several 100.000 samples per pulse train) while the {{code language="none"}}CH00.DAQ.TD{{/code}} trace only has the number of samples which are sent to the DAQ OR if //grouping// is activated the {{code language="none"}}CH00.DAQ.TD{{/code}} conatins only the grouped spectra. To read the ADC trace with an online analysis program the {{code language="none"}}CH00.DAQ.TD{{/code}} is used preferablly.

1161

DAQ channel: {{code language="none"}}FLASH.FEL/ADC.ADQ.FL2EXP1/FL2EXP1.CH00{{/code}}

1162

1163

In addition there are also additional parameters saved like:

1164

1165

* {{code language="none"}}sample frequency{{/code}}: it shows the sample frequency in MHz (number of samples per µs). NOTE: the clock of the ADC is NOT synchronized to the FLASH timing system. Thus the number of samples between bunches in the bunch train may be not integer numbers which will be show up for long bunch trains.

1166

* {{code language="none"}}number of samples{{/code}}: total number of samoles recorded for each 10 Hz trigger

1167

* {{code language="none"}}error (ADC):{{/code}}0 indicates that there was no error

1168

* {{code language="none"}}/CH0-CH3/offset{{/code}}: To use the full dynamic range of the ADC one can shift the base line . This offset is saved here.

===== MHz ADCs =====

similar to the GHz ADCs the MHz ADCs are saved with HDF5 names like:

1173

{{code language="none"}}/FL2/Experiment/MTCA-EXP1/SIS8300 100MHz ADC/CH2/TD{{/code}}

1174

DOOCS prop : FLASH.FEL/ADC.SIS.FL2EXP1/FL2EXP1.CH02/CH00.TD

1175

DAQ channel: : FLASH.FEL/ADC.SIS.FL2EXP1/FL2EXP1.CH02

1176

1177

In addition there are also additional parameters saved like:

1178

1179

* {{code language="none"}}sample frequency{{/code}}: it shows the sample frequency in MHz (number of samples per µs). NOTE: the clock of the ADC is NOT synchronized to the FLASH timing system. Thus the number of samples between bunches in the bunch train may be not integer numbers which will be show up for long bunch trains.

1180

* {{code language="none"}}number of samples{{/code}}: total number of samoles recorded for each 10 Hz trigger

1181

1182

[[Contents>>doc:||anchor="Contents"]]

==== Pump Probe Laser (FLASH2) ====

1187

1188

1189

list of saved parameters status May 2024 (up to now the parameters can be found in /zraw/ ... )

1190

1191

[[attach:FSLADAQ-DAQParameterlistULGAN-2.pdf||target="_blank"]]

1192

1193

[[attach:FSLADAQ-DAQParameterlistFL23-2.pdf||target="_blank"]]

1194

1195

[[attach:FSLADAQ-DAQParameterlistFL24-2.pdf||target="_blank"]]

These are the parameters that can be saved in the FL2 User DAQ for the FL2 PP laser//** FOR BEAMLINE FL24**//

**User delay**

Delay (set value):

FLASH.SYNC/LASER.LOCK.EXP/F2.PPL.OSC/FMC0.MD22.0.POSITION_SET.WR

Delay (readback):

FLASH.SYNC/LASER.LOCK.EXP/F2.PPL.OSC/FMC0.MD22.0.POSITION.RD

1224

1225

1226

(% style="letter-spacing:0.0px" %)Delay (encoder readback):

1227

1228

1229

FLASH.SYNC/LASER.LOCK.EXP/F2.PPL.OSC/FMC0.MD22.0.ENCODER_POSITION.RD

OXC. jitter:

FLASH.SYNC/LASER.LOCK.EXP/F2.PPL.OSC/CURRENT_INPUT_JITTER.RD

**FL24 Pulse resolved energy:**

1241

1242

OPCPA output (photodiode signal raw ADC trace 16000 samples):

1243

1244

1245

/zraw/FLASH.LASER/FLASH2CPUULGAN1.ADCSCOPE/CH23.TD/dGroup

1246

1247

1248

(% style="letter-spacing:0.0px" %)Upper breadboard Photodiode (THG) burst (photodiode signal raw ADC trace 16000 samples)::

1249

1250

1251

/zraw/FLASH.LASER/FLASH2CPUULGAN1.ADCSCOPE/CH26.TD/dGroup

1252

1253

1254

Upper breadboard Photodiode (THG) energy (analyzed signal. integration over pulses in the ADC trace. contains for each laser pulse the pulse energy in a.u.)

1255

1256

1257

/zraw/FLASH.LASER/MOD24.PES/FL24_userPD/dGroup

**FL24 LAM (Laser Arrivaltime Monitor) pulse resolved data:**

1262

1263

Signal of Photodiode1 - for experts only... (analyzed signal. integration over pulses in the ADC trace. )

1264

1265

1266

/zraw/FLASH.LASER/MOD24.PES/LAM.PD1/dGroup

1267

1268

1269

Signal of Photodiode2 - for experts only... (analyzed signal. integration over pulses in the ADC trace.)

1270

1271

1272

/zraw/FLASH.LASER/MOD24.PES/LAM.PD2/dGroup

1273

1274

1275

"Actual" LAM Signal - to be calibrated ...... (analyzed signal. integration over pulses in the ADC trace.)

1276

1277

1278

/zraw/FLASH.LASER/MOD24.PES/LAM.PDBAL/dGroup

1279

1280

1281

The delay feedback(% style="letter-spacing:0.0px" %)

1282

1283

1284

FLASH.LASER/ULGAN1.DYNPROP/TCFIBER.DOUBLES/DOUBLE26

1285

1286

1287

The LAM delay feedback(% style="letter-spacing:0.0px" %) (the pulse energy signal, which is saved in the above but maybe it’s good to have this also as slow, in the case these two numbers are not the same the sysdc was active instead of the LAM):

1288

1289

1290

FLASH.LASER/MOD24.PES/LAM.PDBAL/PULSEENERGY.MEAN

LAM Delay line act:

{{code language="none"}}FLASH.SYNC/LAM.EXP.ODL/F2.MOD.AMC12/FMC0.MD22.1.POSITION.RD{{/code}}

LAM Delay line set:

FLASH.SYNC/LAM.EXP.ODL/F2.MOD.AMC12/FMC0.MD22.1.POSITION_SET.WR

1300

1301

1302

LAM Delay line encoder:

1303

1304

1305

FLASH.SYNC/LAM.EXP.ODL/F2.MOD.AMC12/FMC0.MD22.1.ENCODER_POSITION.RD

1306

1307

1308

Temperature feedback:

1309

1310

1311

FLASH.LASER/ULGAN1.DYNPROP/TCFIBER.DOUBLES/DOUBLE24

1312

1313

1314

**Feedback mode** (if this is not =1 the delay FB is not active, then it’s either temp feedback controlled or failsave, maybe it’s good to have):

1315

1316

1317

FLASH.LASER/ULGAN1.DYNPROP/TCFIBER.INTS/INTEGER30

**FL24 Attenuator angle:**

1322

1323

1324

FLASH.FEL/FLAPP2BEAMLINES/MOTOR1.FL24/FPOS

1325

1326

1327

**FL24 Polarization control:**

1328

1329

1330

FLASH.FEL/FLAPP2BEAMLINES/MOTOR14.FL24/FPOS

1331

1332

1333

**SysDC delay error:**

1334

1335

1336

FLASH.LASER/ULGAN1.DYNPROP/TCFIBER.DOUBLES/DOUBLE26

**Timing error: (these two need to be observed and both=0 means no error)**

1341

1342

1343

FLASH/CPUULGAN1.TIMING/ULGAN1/dT_alarm

FLASH/CPUULGAN1.TIMING/ULGAN1/dMPN

1348

1349

1350

**Laser error status:**

1351

1352

1353

**FL24 Virtual camera X and Y history, beam size: (use slow data)**

1354

1355

1356

FLASH.LASER/MOD24.BEAMPOS/UV.VF_BP/CENTER.X

FLASH.LASER/MOD24.BEAMPOS/UV.VF_BP/CENTER.Y

FLASH.LASER/MOD24.CAM/UV.14.VF/ROI_SPECTRUM.X.SIG

//{{code language="none"}}/FL2/Experiment/Pump probe laser/FL24/attenuator position{{/code}}always saved (PBD2)//

1369

DOOCS prop : {{code language="none"}}FLASH.FEL/FLAPP2BEAMLINES/MOTOR1.FL24/FPOS{{/code}}

1370

DAQ channel: {{code language="none"}}FLASH.FEL/FLAPP2BEAMLINES/MOTOR1.FL24/FPOS{{/code}}

1371

desc: attenuation of the PPLaser in the FL24 hutch (rotation of a waveplate)

units : deg.

//{{code language="none"}}/FL2/Experiment/Pump probe laser/FL24/polarization position{{/code}}always saved (PBD2)//

1377

DOOCS prop : {{code language="none"}}FLASH.FEL/FLAPP2BEAMLINES/MOTOR2.FL24/FPOS{{/code}}

1378

DAQ channel: {{code language="none"}}FLASH.FEL/FLAPP2BEAMLINES/MOTOR2.FL24/FPOS{{/code}}

1379

desc: attenuation of the PPLaser in the FL24 hutch (rotation of a waveplate)

units : deg.

{{code language="none"}}/FL1/Experiment/Pump probe laser/laser delay readback{{/code}}

1384

//always saved (PBD2)//

1385

DOOCS prop : {{code language="none"}}FLASH.SYNC/LASER.LOCK.EXP/FLASH2.PPL1.OSC1/FMC0.MD22.0.POSITION.RD{{/code}}

1386

DAQ channel: {{code language="none"}}FLASH.SYNC/LASER.LOCK.EXP/FLASH2.PPL1.OSC1/FMC0.MD22.0.POSITION.RD{{/code}}

1387

desc: delay of the Pump probe laser - measured by the read back position of the motor. There is also the set value available ( upto now these values are only updating every 1-2 seconds. There is no fast encoder property as on FLASH1 available)

units : ps )

{{code language="none"}}/FL1/Experiment/Pump probe laser/Synchronization/timing jitter RMS{{/code}}

1392

//always saved (PBD)//

1393

DOOCS prop : {{code language="none"}}FLASH.SYNC/LASER.LOCK.EXP/FLASH2.PPL1.OSC1/CURRENT_INPUT_JITTER.RD{{/code}}

1394

DAQ channel: {{code language="none"}}FLASH.SYNC/LASER.LOCK.EXP/FLASH2.PPL1.OSC1/CURRENT_INPUT_JITTER.RD{{/code}}

1395

desc: rms jitter of the fs-Oscillator

units: fs

==== FL 26 Pump Probe Laser (FLASH2) ====

1401

1402

These are the parameters that can be saved in the FL2 User DAQ for the FL2 PP laser//** FOR BEAMLINE FL26**//

**User delay**

Delay (set value):

FLASH.SYNC/LASER.LOCK.EXP/F2.PPL.OSC/FMC0.MD22.0.POSITION_SET.WR

Delay (readback):

FLASH.SYNC/LASER.LOCK.EXP/F2.PPL.OSC/FMC0.MD22.0.POSITION.RD

1417

1418

1419

Delay (encoder readback):

1420

1421

1422

FLASH.SYNC/LASER.LOCK.EXP/F2.PPL.OSC/FMC0.MD22.0.ENCODER_POSITION.RD

OXC. jitter:

FLASH.SYNC/LASER.LOCK.EXP/F2.PPL.OSC/CURRENT_INPUT_JITTER.RD

**Parameters for FL26**

1433

1434

(% class="wrapped" %)

1435

|(((

1436

FL2PPL FL26 REMI Attenuation: HWP motor current position

1437

)))|(((

1438

FLASH.FEL/FLAPP2BEAMLINES/MOTOR11.FL26B/FPOS

1439

)))

1440

|(((

1441

FL2PPL FL26 REMI Polarization: linear polarization angle

1442

)))|(((

1443

FLASH.FEL/FLAPP2BEAMLINES/MOTOR12.FL26B/FPOS

1444

)))

1445

|(((

1446

FL2PPL FL26 REMI Diagnostics: NIR spectrum

1447

)))|(((

1448

FLASH.LASER/MOD26.SPECT/REMI/DAQ_CHANNEL

1449

)))

1450

|(((

1451

FL2PPL FL26 REMI Diagnostics: photo diode input MOD2.6 - pulse energy mean

1452

)))|(((

1453

FLASH.LASER/MOD26.PES/RE_OUT/PULSEENERGY.MEAN

1454

)))

1455

|(((

1456

FL2PPL FL26 REMI Diagnostics: photo diode input MOD2.6 - intra burst pulse energy

1457

)))|(((

1458

FLASH.LASER/MOD26.PES/RE_OUT/DAQ_CHANNEL

1459

)))

1460

|(((

1461

FL2PPL FL26 REMI Diagnostics: photo diode input MOD2.6 - raw adc

1462

)))|(((

1463

FLASH.LASER/TAMC532DMA/ULGAN1_S5/CH04.TD

1464

)))

1465

|(((

1466

FL2PPL FL26 REMI Diagnostics: photo diode input REMI - pulse energy mean

1467

)))|(((

1468

FLASH.LASER/MOD26.PES/INC_BOX/PULSEENERGY.MEAN

1469

)))

1470

|(((

1471

FL2PPL FL26 REMI Diagnostics: photo diode input REMI - intra burst pulse energy

1472

)))|(((

1473

FLASH.LASER/MOD26.PES/INC_BOX/DAQ_CHANNEL

1474

)))

1475

|(((

1476

FL2PPL FL26 REMI Diagnostics: photo diode input REMI - raw adc

1477

)))|(((

1478

FLASH.LASER/TAMC532DMA/ULGAN1_S5/CH05.TD

1479

)))

1480

|(((

1481

FL2PPL FL26 REMI In coupling: filter wheel 1 position

1482

)))|(((

1483

FLASH/MOD26.FW1/FLASH2MOD26/pos

1484

)))

1485

|(((

1486

FL2PPL FL26 REMI In coupling: filter wheel 2 position

1487

)))|(((

1488

FLASH/MOD26.FW2/FLASH2MOD26/pos

1489

)))

1490

|(((

1491

FL2PPL FL26 REMI: Energy meter REMI incoupling breadboard

1492

)))|(((

1493

FLASH.LASER/MOD26.OPHIRE/REINC.54/DAQ_CHANNEL

1494

)))

1495

|(((

1496

FL2PPL FL26 REMI Incoupling: focusing lens position

1497

)))|(((

1498

FLASH.FEL/FLAPP2BEAMLINES/MOTOR3.FL26B/FPOS

1499

)))

1500

|(((

1501

FL2PPL FL26 REMI Incoupling: nearfield

1502

)))|(((

1503

FLASH.LASER/MOD26.CAM/REINC.21.NF/DAQ_CHANNEL

1504

)))

1505

|(((

1506

FL2PPL FL26 REMI Incoupling: focus

1507

)))|(((

1508

FLASH.LASER/MOD26.CAM/REINC.22.FF/DAQ_CHANNEL

1509

)))

1510

|(((

1511

FL2PPL FL26 REMI Drift: relative arrival time intra burst LAM balanced - calb. in the PES

1512

)))|(((

1513

FLASH.LASER/MOD26.PES/LAM_DIFF/DAQ_CHANNEL

1514

)))

1515

|(((

1516

FL2PPL FL26 REMI Drift: forward signal (PD1) raw

1517

)))|(((

1518

FLASH.LASER/TAMC532DMA/ULGAN1_S5/CH00.TD

1519

)))

1520

|(((

1521

FL2PPL FL26 REMI Drift: backward signal (PD2) raw

1522

)))|(((

1523

FLASH.LASER/TAMC532DMA/ULGAN1_S5/CH01.TD

1524

)))

1525

|(((

1526

FL2PPL FL26 REMI Drift: mean relative burst arrival time - avarage of the calib value

1527

)))|(((

1528

FLASH.LASER/MOD26.PES/LAM_DIFF/PULSEENERGY.MEAN

1529

)))

1530

|(((

1531

FL2PPL FL26 REMI Drift: delay line position (ODL of the LAM REMI)

1532

)))|(((

1533

FLASH.FEL/FLAPP2BEAMLINES/MOTOR14.FL26B/FPOS

1534

)))

1535

|(((

1536

FL2PPL FL26 Laser Hutch: delay line position (ODL of the osc. Sync / user delay)

1537

)))|(((

1538

FLASH.SYNC/LASER.LOCK.EXP/F2.PPL.OSC/FMC0.MD22.0.POSITION.RD

1539

)))

1540

|(((

1541

FL2PPL FL26 REMI Drift: delay line encoder position (ODL REMI raw value)

1542

)))|(((

1543

FLASH.SYNC/LAM.EXP.ODL/F2.MOD.AMC12/FMC0.MD22.0.ENCODER_POSITION.RD

1544

)))

1545

|(((

1546

Jiiter between oscillator and MLO (inloop jitter osc. Sync)

1547

)))|(((

1548

FLASH.SYNC/LASER.LOCK.EXP/F2.PPL.OSC/CURRENT_INPUT_JITTER.RD

1549

)))

1550

|(((

1551

Temperature controlled fiber (PWM signal to the temperature controlled fiber delay sysdc)

1552

)))|(((

1553

FLASH.LASER/ULGAN1.DYNPROP/TCFIBER.DOUBLES/DOUBLE23

1554

)))

1555

|(((

1556

Temperature controlled fiber (Temp of the fiber delay sysdc)

1557

)))|(((

1558

FLASH.LASER/ULGAN1.DYNPROP/TCFIBER.DOUBLES/DOUBLE24

1559

)))

1560

|(((

1561

Sydc feedback data if LAM is not activated (sysdc delay)

1562

)))|(((

1563

FLASH.LASER/ULGAN1.DYNPROP/TCFIBER.DOUBLES/DOUBLE26

)))

=== "/uncategorized/" ===

1570

1571

If parameters for an experiment are included on short notice the correct naming in the HDF5 may not be in time and the data will show up in /uncategorized/ with their DOOCS names

1572

1573

1574

=== HDF5 structure revisions ===

1575

1576

Starting with Beamblock 4, August 2018, the hierarchy of the HDF group names have been adapted to reflect the new situation at FLASH. FLASH2 is operating for users quite some time now. Therefore, both accelerators appear equally in their respective HDF groups, namely "/FL1" and "/FL2". The root group of proper, by run organised HDF files have an attribute called "version". This version attribute has changed from "0.2.x" to "0.3.x". The changes in detail:

1577

1578

1579

* All FLASH1 related HDF groups moved to group "/FL1", i.e. a new prefix "/FL1" is added to their HDF path.

1580

* The ambigious term "pulse" has been replaced by "train" to refer to "pulse train". Most notably, the dataset "/Timing/pulse ID" has changed to "/Timing/train ID".

1581

* A number of inconsistent names have been streamlined. The relevant changes are listed in the following table.

1582

1583

(% class="wrapped" %)

1584

|=(((

1585

earlier HDF path (vers. 0.2)

)))|=(((

is now (vers. 0.3)

)))

|(((

/Photon Diagnostic/GMD/Beam position/position BDA x

1591

)))|(((

1592

/FL1/Photon Diagnostic/GMD/Beam position/position BDA horizontal

1593

)))

1594

|(((

1595

/Photon Diagnostic/GMD/Beam position/position BDA y

1596

)))|(((

1597

/FL1/Photon Diagnostic/GMD/Beam position/position BDA vertical

1598

)))

1599

|(((

1600

/Photon Diagnostic/GMD/Beam position/position tunnel x

1601

)))|(((

1602

/FL1/Photon Diagnostic/GMD/Beam position/position tunnel horizontal

1603

)))

1604

|(((

1605

/Photon Diagnostic/GMD/Beam position/position tunnel y

1606

)))|(((

1607

/FL1/Photon Diagnostic/GMD/Beam position/position tunnel vertical

1608

)))

1609

|(((

1610

/Experiment/Pump probe laser/BPM/position x

1611

)))|(((

1612

/FL1/Experiment/Pump probe laser/BPM/position horizontal

1613

)))

1614

|(((

1615

/Experiment/Pump probe laser/BPM/position y

1616

)))|(((

1617

/FL1/Experiment/Pump probe laser/BPM/position vertical

1618

)))

1619

|(((

1620

/FL2/Photon Diagnostic/GMD/Beam position/Average/position hall horizontal

1621

)))|(((

1622

/FL2/Photon Diagnostic/GMD/Average beam position/position hall horizontal

1623

)))

1624

|(((

1625

/FL2/Photon Diagnostic/GMD/Beam position/Average/position hall vertical

1626

)))|(((

1627

/FL2/Photon Diagnostic/GMD/Average beam position/position hall vertical

1628

)))

1629

|(((

1630

/FL2/Photon Diagnostic/GMD/Beam position/Average/position tunnel horizontal

1631

)))|(((

1632

/FL2/Photon Diagnostic/GMD/Average beam position/position tunnel horizontal

1633

)))

1634

|(((

1635

/FL2/Photon Diagnostic/GMD/Beam position/Average/position tunnel vertical

1636

)))|(((

1637

/FL2/Photon Diagnostic/GMD/Average beam position/position tunnel vertical

1638

)))

1639

|(((

1640

/FL2/Photon Diagnostic/GMD/Average energy/hall

1641

)))|(((

1642

/FL2/Photon Diagnostic/GMD/Average energy/energy hall

1643

)))

1644

|(((

1645

/FL2/Photon Diagnostic/GMD/Average energy/hall (raw)

1646

)))|(((

1647

/FL2/Photon Diagnostic/GMD/Average energy/energy hall (raw)

1648

)))

1649

|(((

1650

/FL2/Photon Diagnostic/GMD/Average energy/tunnel

1651

)))|(((

1652

/FL2/Photon Diagnostic/GMD/Average energy/energy tunnel

1653

)))

1654

|(((

1655

/FL2/Photon Diagnostic/GMD/Average energy/tunnel (raw)

1656

)))|(((

1657

/FL2/Photon Diagnostic/GMD/Average energy/energy tunnel (raw)

1658

)))

1659

|(((

1660

/FL2/Photon Diagnostic/GMD/Beam position/Pulse resolved/hall x

1661

)))|(((

1662

/FL2/Photon Diagnostic/GMD/Pulse resolved beam position/position hall horizontal

1663

)))

1664

|(((

1665

/FL2/Photon Diagnostic/GMD/Beam position/Pulse resolved/hall y

1666

)))|(((

1667

/FL2/Photon Diagnostic/GMD/Pulse resolved beam position/position hall vertical

1668

)))

1669

|(((

1670

/FL2/Photon Diagnostic/GMD/Beam position/Pulse resolved/tunnel x

1671

)))|(((

1672

/FL2/Photon Diagnostic/GMD/Pulse resolved beam position/position tunnel horizontal

1673

)))

1674

|(((

1675

/FL2/Photon Diagnostic/GMD/Beam position/Pulse resolved/tunnel y

1676

)))|(((

1677

/FL2/Photon Diagnostic/GMD/Pulse resolved beam position/position tunnel vertical

1678

)))

1679

1680

[[Contents>>doc:||anchor="Contents"]]

Wiki source code of The FLASH HDF5 structure

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