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:FLASHUSER.Data Acquisition and controls.DAQ and controls overview.Offline data analysis (DAQ).Collection of HDF5 sample data from different beamlines.WebHome]] and [[doc:FLASHUSER.Data Acquisition and controls.Data Access at FLASH (DAQ, gpfs,\.\.\.).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

units: mbar

{{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:FLASHUSER.jddd-linked help pages.Filter-Units.Filter wheels in FLASH1 and FLASH2.WebHome]]

units: degree

{{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:FLASHUSER.jddd-linked help pages.Filter-Units.Filter wheels in FLASH1 and FLASH2.WebHome]]

units: degree

{{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

units: degree

{{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

units: degree

{{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:FLASHUSER.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:FLASHUSER.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:FLASHUSER.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:FLASHUSER.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:FLASHUSER.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>>url:https://confluence.desy.de/display/FLASHUSER/Info+collection+for+the+BAM||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>>url:https://confluence.desy.de/display/SDiagPublic/BAM+Data+Structure||shape="rect"]]

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

416

* 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 **

421

422

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

423

//always saved (PBD)//

424

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

425

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

426

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).

427

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

428

429

430

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

431

//always saved (PBD)//

432

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

433

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

434

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

435

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

436

437

438

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

439

440

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

441

//always saved (PBD)//

442

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

443

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

444

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).

445

446

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

447

448

449

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

450

//always saved (PBD)//

451

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

452

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

453

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).

454

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

455

456

457

(% style="color:#ff6600" %)DBC2/error (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.bamError.1(%%)

460

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

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

465

//always saved (PBD)//

466

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

467

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

468

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

469

470

471

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

472

473

(% 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)

474

475

//always saved (PBD)//

476

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

477

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

478

{{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).

479

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}}(%%)

484

//always saved (PBD)//

485

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

486

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

487

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).

488

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

489

490

491

(% style="color:#172b4d" %)SFELC(% style="color:#ff6600" %)/error (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.bamError(%%)

494

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

495

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

496

497

498

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

499

//always saved (PBD)//

500

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

501

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

502

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 =====

507

508

{{code language="none"}}/FL1/Electron Diagnostic/Electron bunch profile/TDS profile{{/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/OUT.PROF.CCCED{{/code}}

511

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

512

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

units: pixel

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

517

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

518

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

519

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

520

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

units: fs per pixel

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

525

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

526

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

527

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

528

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

529

units: fs

530

531

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

532

533

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

534

//always saved (PBD)//

535

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

536

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

537

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

538

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

539

540

541

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

542

//always saved (PBD)//

543

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

544

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

545

desc: electron bunch energy bunch resolved

546

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

547

548

549

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

550

//always saved (PBD)//

551

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

552

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

553

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

units: nm

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

558

559

560

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

561

562

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

563

564

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

565

//always saved (PBD)//

566

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

567

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

568

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

units: kHz

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

573

574

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

575

//always saved (PBD)//

576

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

577

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

578

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

579

units:

580

581

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

582

583

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

584

//always saved (PBD)//

585

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

586

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

587

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)

units:

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

592

593

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

594

//always saved (PBD)//

595

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

596

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

597

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}}

604

//always saved (PBD)//

605

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

606

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

607

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 !)

units:

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

612

613

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

614

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

units: d h min s cs

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

619

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

620

second column: microseconds

621

third column: Train ID of FLASH

622

623

624

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

625

626

627

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

628

629

**PIGLET (PG laser)**

630

631

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

632

633

634

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

647

648

649

//always saved (PBD)//

650

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

651

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

652

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

653

units : 0 no transmission , 1: full transmission

654

655

656

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

657

//always saved (PBD)//

658

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

659

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

660

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

661

units : ps ( pos delay means IR comes later)

662

663

664

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

665

//always saved (PBD)//

666

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

667

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

668

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

669

units : ps ( pos delay means IR comes later)

670

671

672

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

673

//always saved (PBD)//

674

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

675

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

676

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

677

678

679

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

680

//always saved (PBD)//

681

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

682

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

683

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

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

688

689

690

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

691

692

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.

693

694

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

695

696

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:FLASHUSER.Data Acquisition and controls.Controls (DOOCS, jDDD,\.\.\.).MTCA ADCs.WebHome]]**

701

//saved on DEMAND in the user DAQ//

702

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

703

\\PG Beamline:

704

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

705

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

706

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

707

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

708

709

BL Beamlines:

710

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

711

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

712

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

713

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

714

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

715

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

716

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

717

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

718

719

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

720

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.

721

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

722

723

In addition there are also additional parameters saved like:

724

725

* {{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.

726

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

727

* {{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:

732

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

733

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

734

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

735

736

In addition there are also additional parameters saved like:

737

738

* {{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.

739

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

740

741

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

=== FLASH2 ===

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

749

750

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

751

752

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

753

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

754

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

755

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

756

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

757

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

758

759

760

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

761

//always saved (PBD2)//

762

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

763

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

764

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}}

769

//always saved (PBD2)//

770

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

771

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

772

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

units: degree

/FL2/Beamlines/Filter wheel/position wheel 2

777

always saved (PBD2)

778

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

779

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

780

desc: Position of the BL filter wheel 2 - to correlate with the filter material please look [[here>>doc:FLASHUSER.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

785

786

[[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) ====

791

792

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

793

//always saved (PBD2)//

794

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

795

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

796

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}}

801

//always saved (PBD2)//

802

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

803

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

804

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)

805

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

806

807

808

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

809

810

811

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

812

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

813

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

814

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

815

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)(%%))

816

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

817

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

818

1. Combined warning and error flags

819

820

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 !

831

832

833

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

834

835

836

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

837

//always saved (PBD2)//

838

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

839

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

840

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}}

845

//always saved (PBD2)//

846

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

847

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

848

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

853

always saved (PBD2)

854

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

855

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

856

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 ...)

857

units : mm

858

859

(x=horizontal, y = vertial)

860

861

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) ====

866

867

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

868

869

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

870

871

872

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

873

// saved opon request (PBD2)//

874

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

875

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

876

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}}

881

// saved opon request (PBD2)//

882

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

883

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

884

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}}

889

// saved opon request (PBD2)//

890

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

891

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

892

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"]])

897

898

899

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) ====

904

905

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

906

907

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

908

//always saved (PBD2)//

909

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

910

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

911

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

units: nC

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

916

917

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

918

//always saved (PBD2)//

919

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

920

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

921

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

922

923

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

924

925

926

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

927

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

928

929

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

930

//always saved (PBD2)//

931

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

932

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

933

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 % ...

934

units: nm

935

936

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

937

//always saved (PBD2)//

938

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

939

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

940

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

941

units: mm

942

943

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

944

945

=====

946

arrival time (BAM) =====

947

948

949

* see: [[Info collection about the BAMs and how to use the BAM data>>url:https://confluence.desy.de/display/FLASHUSER/Info+collection+for+the+BAM||shape="rect"]]

950

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

951

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

952

* 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)

953

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

954

** acc: 4DBC3 → FL0.DBC2

955

** FL1: 1SFELC → FL1.SFELC

956

** FL2: 8FL2XTDS → (% style="color:#172b4d" %)FL2.SEED5

957

* for more Info: [[LINK to detailed infos from MSK>>url:https://confluence.desy.de/display/SDiagPublic/BAM+Data+Structure||shape="rect"]]

958

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

959

* 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 **

964

965

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

966

//always saved (PBD2)//

967

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

968

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

969

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

970

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

971

972

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

973

//always saved (PBD2)//

974

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

975

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

976

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

977

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

978

979

980

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

981

* 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

982

** 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

983

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

984

* [[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"]]

985

* 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}} ======

991

992

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

993

994

995

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

996

997

998

//always saved (PBD)//

999

**FL0.DBC2**

1000

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

1001

{{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).

1002

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

1003

1004

1005

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

1006

1007

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

1008

//always saved (PBD)//

1009

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

1010

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

1011

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).

1012

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

1013

1014

1015

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

1016

//always saved (PBD)//

1017

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

1018

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

1019

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

1020

1021

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

1022

//always saved (PBD)//

1023

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

1024

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

1025

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}} ======

1030

1031

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

1032

1033

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

1034

1035

//always saved (PBD)//

1036

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

1037

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

1038

{{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).

1039

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}}

1044

1045

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

1046

//always saved (PBD)//

1047

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

1048

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

1049

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).

1050

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

1051

1052

1053

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

1054

//always saved (PBD)//

1055

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

1056

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

1057

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

1058

1059

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

1060

//always saved (PBD)//

1061

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

1062

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

1063

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

1064

1065

1066

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

1067

1068

1069

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

1070

1071

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

1072

1073

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

1074

//always saved (PBD2)//

1075

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

1076

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

1077

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 ...)

1078

units: µs

1079

1080

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

1081

1082

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

1083

//always saved (PBD2)//

1084

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

1085

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

1086

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

units: kHz

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

1091

1092

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

1093

//always saved (PBD2)//

1094

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

1095

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

1096

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

1097

units:

1098

1099

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

1100

1101

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

1102

//always saved (PBD2)//

1103

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

1104

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

1105

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)

units:

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

1110

1111

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

1112

//always saved (PBD2)//

1113

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

1114

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

1115

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}}

1122

//always saved (PBD2)//

1123

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

1124

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

1125

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 !)

units:

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

1130

1131

//always saved (PBD2)//

1132

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

1133

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)//

1142

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

1143

second column: microseconds

1144

third column: Train ID of FLASH

1145

1146

1147

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

1148

1149

1150

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

1151

1152

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.

1153

1154

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

1155

1156

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:FLASHUSER.Data Acquisition and controls.Controls (DOOCS, jDDD,\.\.\.).MTCA ADCs.WebHome]]**

1161

//saved on DEMAND in the user DAQ//

1162

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

1163

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

1164

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

1165

\\{{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}}

1166

1167

1168

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

1169

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.

1170

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

1171

1172

In addition there are also additional parameters saved like:

1173

1174

* {{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.

1175

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

1176

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

1177

* {{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:

1182

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

1183

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

1184

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

1185

1186

In addition there are also additional parameters saved like:

1187

1188

* {{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.

1189

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

1190

1191

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

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

1196

1197

1198

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

1199

1200

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

1201

1202

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

1203

1204

[[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

1233

1234

1235

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

1236

1237

1238

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:**

1250

1251

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

1252

1253

1254

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

1255

1256

1257

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

1258

1259

1260

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

1261

1262

1263

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.)

1264

1265

1266

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

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

1271

1272

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

1273

1274

1275

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

1276

1277

1278

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

1279

1280

1281

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

1282

1283

1284

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

1285

1286

1287

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

1288

1289

1290

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

1291

1292

1293

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

1294

1295

1296

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):

1297

1298

1299

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

1309

1310

1311

LAM Delay line encoder:

1312

1313

1314

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

1315

1316

1317

Temperature feedback:

1318

1319

1320

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

1321

1322

1323

**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):

1324

1325

1326

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

**FL24 Attenuator angle:**

1331

1332

1333

FLASH.FEL/FLAPP2BEAMLINES/MOTOR1.FL24/FPOS

1334

1335

1336

**FL24 Polarization control:**

1337

1338

1339

FLASH.FEL/FLAPP2BEAMLINES/MOTOR14.FL24/FPOS

1340

1341

1342

**SysDC delay error:**

1343

1344

1345

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

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

1350

1351

1352

FLASH/CPUULGAN1.TIMING/ULGAN1/dT_alarm

FLASH/CPUULGAN1.TIMING/ULGAN1/dMPN

1357

1358

1359

**Laser error status:**

1360

1361

1362

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

1363

1364

1365

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)//

1378

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

1379

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

1380

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)//

1386

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

1387

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

1388

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}}

1393

//always saved (PBD2)//

1394

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

1395

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

1396

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}}

1401

//always saved (PBD)//

1402

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

1403

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

1404

desc: rms jitter of the fs-Oscillator

units: fs

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

1410

1411

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

1426

1427

1428

Delay (encoder readback):

1429

1430

1431

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**

1442

1443

(% class="wrapped" %)

1444

|(((

1445

FL2PPL FL26 REMI Attenuation: HWP motor current position

1446

)))|(((

1447

FLASH.FEL/FLAPP2BEAMLINES/MOTOR11.FL26B/FPOS

1448

)))

1449

|(((

1450

FL2PPL FL26 REMI Polarization: linear polarization angle

1451

)))|(((

1452

FLASH.FEL/FLAPP2BEAMLINES/MOTOR12.FL26B/FPOS

1453

)))

1454

|(((

1455

FL2PPL FL26 REMI Diagnostics: NIR spectrum

1456

)))|(((

1457

FLASH.LASER/MOD26.SPECT/REMI/DAQ_CHANNEL

1458

)))

1459

|(((

1460

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

1461

)))|(((

1462

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

1463

)))

1464

|(((

1465

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

1466

)))|(((

1467

FLASH.LASER/MOD26.PES/RE_OUT/DAQ_CHANNEL

1468

)))

1469

|(((

1470

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

1471

)))|(((

1472

FLASH.LASER/TAMC532DMA/ULGAN1_S5/CH04.TD

1473

)))

1474

|(((

1475

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

1476

)))|(((

1477

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

1478

)))

1479

|(((

1480

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

1481

)))|(((

1482

FLASH.LASER/MOD26.PES/INC_BOX/DAQ_CHANNEL

1483

)))

1484

|(((

1485

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

1486

)))|(((

1487

FLASH.LASER/TAMC532DMA/ULGAN1_S5/CH05.TD

1488

)))

1489

|(((

1490

FL2PPL FL26 REMI In coupling: filter wheel 1 position

1491

)))|(((

1492

FLASH/MOD26.FW1/FLASH2MOD26/pos

1493

)))

1494

|(((

1495

FL2PPL FL26 REMI In coupling: filter wheel 2 position

1496

)))|(((

1497

FLASH/MOD26.FW2/FLASH2MOD26/pos

1498

)))

1499

|(((

1500

FL2PPL FL26 REMI: Energy meter REMI incoupling breadboard

1501

)))|(((

1502

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

1503

)))

1504

|(((

1505

FL2PPL FL26 REMI Incoupling: focusing lens position

1506

)))|(((

1507

FLASH.FEL/FLAPP2BEAMLINES/MOTOR3.FL26B/FPOS

1508

)))

1509

|(((

1510

FL2PPL FL26 REMI Incoupling: nearfield

1511

)))|(((

1512

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

1513

)))

1514

|(((

1515

FL2PPL FL26 REMI Incoupling: focus

1516

)))|(((

1517

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

1518

)))

1519

|(((

1520

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

1521

)))|(((

1522

FLASH.LASER/MOD26.PES/LAM_DIFF/DAQ_CHANNEL

1523

)))

1524

|(((

1525

FL2PPL FL26 REMI Drift: forward signal (PD1) raw

1526

)))|(((

1527

FLASH.LASER/TAMC532DMA/ULGAN1_S5/CH00.TD

1528

)))

1529

|(((

1530

FL2PPL FL26 REMI Drift: backward signal (PD2) raw

1531

)))|(((

1532

FLASH.LASER/TAMC532DMA/ULGAN1_S5/CH01.TD

1533

)))

1534

|(((

1535

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

1536

)))|(((

1537

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

1538

)))

1539

|(((

1540

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

1541

)))|(((

1542

FLASH.FEL/FLAPP2BEAMLINES/MOTOR14.FL26B/FPOS

1543

)))

1544

|(((

1545

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

1546

)))|(((

1547

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

1548

)))

1549

|(((

1550

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

1551

)))|(((

1552

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

1553

)))

1554

|(((

1555

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

1556

)))|(((

1557

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

1558

)))

1559

|(((

1560

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

1561

)))|(((

1562

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

1563

)))

1564

|(((

1565

Temperature controlled fiber (Temp of the fiber delay sysdc)

1566

)))|(((

1567

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

1568

)))

1569

|(((

1570

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

1571

)))|(((

1572

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

)))

=== "/uncategorized/" ===

1579

1580

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

1581

1582

1583

=== HDF5 structure revisions ===

1584

1585

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:

1586

1587

1588

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

1589

* 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".

1590

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

1591

1592

(% class="wrapped" %)

1593

|=(((

1594

earlier HDF path (vers. 0.2)

)))|=(((

is now (vers. 0.3)

)))

|(((

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

1600

)))|(((

1601

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

1602

)))

1603

|(((

1604

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

1605

)))|(((

1606

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

1607

)))

1608

|(((

1609

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

1610

)))|(((

1611

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

1612

)))

1613

|(((

1614

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

1615

)))|(((

1616

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

1617

)))

1618

|(((

1619

/Experiment/Pump probe laser/BPM/position x

1620

)))|(((

1621

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

1622

)))

1623

|(((

1624

/Experiment/Pump probe laser/BPM/position y

1625

)))|(((

1626

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

1627

)))

1628

|(((

1629

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

1630

)))|(((

1631

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

1632

)))

1633

|(((

1634

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

1635

)))|(((

1636

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

1637

)))

1638

|(((

1639

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

1640

)))|(((

1641

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

1642

)))

1643

|(((

1644

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

1645

)))|(((

1646

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

1647

)))

1648

|(((

1649

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

1650

)))|(((

1651

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

1652

)))

1653

|(((

1654

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

1655

)))|(((

1656

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

1657

)))

1658

|(((

1659

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

1660

)))|(((

1661

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

1662

)))

1663

|(((

1664

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

1665

)))|(((

1666

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

1667

)))

1668

|(((

1669

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

1670

)))|(((

1671

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

1672

)))

1673

|(((

1674

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

1675

)))|(((

1676

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

1677

)))

1678

|(((

1679

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

1680

)))|(((

1681

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

1682

)))

1683

|(((

1684

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

1685

)))|(((

1686

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

1687

)))

1688

1689

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

Wiki source code of The FLASH HDF5 structure

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