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~[~[image:url:http://hasfweb.desy.de/pub/TWiki/TWikiDocGraphics/external-link.gif~|~|height="12" width="13"~]~]>>url:https://portal.hdfgroup.org/display/support||shape="rect"]]

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To download the HDF5 Viewer click [[here~[~[image:url:http://hasfweb.desy.de/pub/TWiki/TWikiDocGraphics/external-link.gif~|~|height="12" width="13"~]~]>>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.Data Access at FLASH (DAQ, gpfs,\.\.\.).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~[~[image:url:http://hasfweb.desy.de/pub/TWiki/TWikiDocGraphics/external-link.gif~|~|height="12" width="13"~]~]>>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

413

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

414

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

415

* [[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(%%)

460

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

461

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

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/ ... )

635

636

[[~[~[image:Screenshot 2024-05-17 094435.png~|~|height="319" width="250"~]~]>>attach:FSLADAQ-DAQParameterlistPiGLET.pdf]]

/FL1/Experiment/Pump probe laser/laser attenuation

644

645

646

//always saved (PBD)//

647

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

648

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

649

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

650

units : 0 no transmission , 1: full transmission

651

652

653

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

654

//always saved (PBD)//

655

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

656

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

657

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

658

units : ps ( pos delay means IR comes later)

659

660

661

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

662

//always saved (PBD)//

663

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

664

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

665

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

666

units : ps ( pos delay means IR comes later)

667

668

669

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

670

//always saved (PBD)//

671

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

672

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

673

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

674

675

676

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

677

//always saved (PBD)//

678

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

679

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

680

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

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

685

686

687

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

688

689

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.

690

691

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

692

693

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]]**

698

//saved on DEMAND in the user DAQ//

699

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

700

\\PG Beamline:

701

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

702

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

703

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

704

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

705

706

BL Beamlines:

707

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

708

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

709

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

710

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

711

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

712

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

713

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

714

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

715

716

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

717

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.

718

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

719

720

In addition there are also additional parameters saved like:

721

722

* {{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.

723

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

724

* {{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:

729

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

730

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

731

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

732

733

In addition there are also additional parameters saved like:

734

735

* {{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.

736

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

737

738

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

=== FLASH2 ===

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

746

747

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

748

749

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

750

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

751

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

752

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

753

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

754

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

755

756

757

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

758

//always saved (PBD2)//

759

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

760

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

761

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}}

766

//always saved (PBD2)//

767

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

768

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

769

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

774

always saved (PBD2)

775

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

776

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

777

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

782

783

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

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

788

789

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

790

//always saved (PBD2)//

791

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

792

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

793

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

units : microJ

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

798

//always saved (PBD2)//

799

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

800

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

801

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

802

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

803

804

805

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

806

807

808

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

809

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

810

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

811

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

812

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)(%%))

813

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

814

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

815

1. Combined warning and error flags

816

817

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 !

828

829

830

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

831

832

833

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

834

//always saved (PBD2)//

835

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

836

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

837

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}}

842

//always saved (PBD2)//

843

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

844

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

845

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

850

always saved (PBD2)

851

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

852

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

853

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 ...)

854

units : mm

855

856

(x=horizontal, y = vertial)

857

858

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) ====

863

864

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

865

866

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

867

868

869

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

870

// saved opon request (PBD2)//

871

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

872

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

873

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}}

878

// saved opon request (PBD2)//

879

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

880

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

881

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}}

886

// saved opon request (PBD2)//

887

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

888

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

889

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"]])

894

895

896

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) ====

901

902

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

903

904

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

905

//always saved (PBD2)//

906

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

907

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

908

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

units: nC

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

913

914

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

915

//always saved (PBD2)//

916

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

917

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

918

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

919

920

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

921

922

923

(% style="color: rgb(94,108,132);font-weight: 600;letter-spacing: 0.0px;" %)

924

undulator settings

925

926

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

927

//always saved (PBD2)//

928

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

929

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

930

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 % ...

931

units: nm

932

933

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

934

//always saved (PBD2)//

935

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

936

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

937

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

938

units: mm

939

940

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

941

942

=====

943

arrival time (BAM) =====

944

945

946

* 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"]]

947

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

948

* 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 ...

949

* 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)

950

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

951

** acc: 4DBC3 → FL0.DBC2

952

** FL1: 1SFELC → FL1.SFELC

953

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

954

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

955

* [[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]]

956

* 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 **

961

962

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

963

//always saved (PBD2)//

964

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

965

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

966

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

967

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

968

969

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

970

//always saved (PBD2)//

971

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

972

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

973

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

974

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

975

976

977

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

978

* 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

979

** 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

980

* [[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]]

981

* [[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"]]

982

* 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}} ======

988

989

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

990

991

992

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

993

994

995

//always saved (PBD)//

996

**FL0.DBC2**

997

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

998

{{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).

999

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

1000

1001

1002

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

1003

1004

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

1005

//always saved (PBD)//

1006

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

1007

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

1008

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).

1009

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

1010

1011

1012

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

1013

//always saved (PBD)//

1014

(% style="color:#000000" %)E.bamError{{code language="none"}}DOOCS prop : FLASH.SDIAG/BAM/FL0.DBC2/ARRIVAL_TIM{{/code}}(%%)

1015

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

1016

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

1017

1018

1019

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

1020

//always saved (PBD)//

1021

(% style="color:#000000" %)E..bamStatus.//2//{{code language="none"}}DOOCS prop : FLASH.SDIAG/BAM/FL0.DBC2/ARRIVAL_TIM{{/code}}(%%)

1022

(% style="color:#000000" %): FLASH.SDIAG/BAM/FL0.DBC2/ARRIVAL_TIME.BAMSTATUS.2{{code language="none"}}DAQ channel{{/code}}(%%)

1023

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

1024

1025

1026

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

1027

1028

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

1029

1030

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

1031

1032

//always saved (PBD)//

1033

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

1034

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

1035

{{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).

1036

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}}

1041

1042

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

1043

//always saved (PBD)//

1044

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

1045

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

1046

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).

1047

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

1048

1049

1050

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

1051

//always saved (PBD)//

1052

(% style="color:#172b4d" %)**FL2.SEED5**(% style="color:#000000" %)E.bamError{{code language="none"}}DOOCS prop : FLASH.SDIAG/BAM//ARRIVAL_TIM{{/code}}(%%)

1053

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

1054

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

1055

1056

1057

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

1058

//always saved (PBD)//

1059

(% style="color:#172b4d" %)**FL2.SEED5**(% style="color:#000000" %)E.bamStatus.//2//{{code language="none"}}DOOCS prop : FLASH.SDIAG/BAM//ARRIVAL_TIM{{/code}}(%%)

1060

(% style="color:#000000" %)el: FLASH.SDIAG/BAM/(% style="color:#172b4d" %)**FL2.SEED5**(% style="color:#000000" %)/ARRIVAL_TIME.BAMSTATUS.2{{code language="none"}}DAQ chann{{/code}}(%%)

1061

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

1062

1063

1064

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

1065

1066

1067

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

1068

1069

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

1070

1071

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

1072

//always saved (PBD2)//

1073

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

1074

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

1075

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 ...)

1076

units: µs

1077

1078

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

1079

1080

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

1081

//always saved (PBD2)//

1082

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

1083

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

1084

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

units: kHz

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

1089

1090

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

1091

//always saved (PBD2)//

1092

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

1093

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

1094

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

1095

units:

1096

1097

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

1098

1099

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

1100

//always saved (PBD2)//

1101

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

1102

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

1103

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 =====

1108

1109

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

1110

//always saved (PBD2)//

1111

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

1112

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

1113

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}}

1120

//always saved (PBD2)//

1121

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

1122

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

1123

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 =====

1128

1129

//always saved (PBD2)//

1130

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

1131

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)//

1140

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

1141

second column: microseconds

1142

third column: Train ID of FLASH

1143

1144

1145

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

1146

1147

1148

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

1149

1150

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.

1151

1152

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

1153

1154

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]]**

1159

//saved on DEMAND in the user DAQ//

1160

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

1161

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

1162

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

1163

\\{{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}}

1164

1165

1166

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

1167

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.

1168

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

1169

1170

In addition there are also additional parameters saved like:

1171

1172

* {{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.

1173

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

1174

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

1175

* {{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:

1180

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

1181

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

1182

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

1183

1184

In addition there are also additional parameters saved like:

1185

1186

* {{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.

1187

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

1188

1189

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

==== FL 24 Pump Probe Laser (FLASH2) ====

1194

1195

1196

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

1197

1198

[[attach:FSLADAQ-FL23.pdf||target="_blank"]]

1199

1200

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

1201

1202

[[attach:FSLADAQ-DAQParameterlistPPlaser.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

1220

1221

1222

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

1223

1224

1225

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:**

1237

1238

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

1239

1240

1241

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

1242

1243

1244

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

1245

1246

1247

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

1248

1249

1250

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.)

1251

1252

1253

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

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

1258

1259

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

1260

1261

1262

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

1263

1264

1265

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

1266

1267

1268

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

1269

1270

1271

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

1272

1273

1274

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

1275

1276

1277

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

1278

1279

1280

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

1281

1282

1283

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):

1284

1285

1286

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

1296

1297

1298

LAM Delay line encoder:

1299

1300

1301

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

1302

1303

1304

Temperature feedback:

1305

1306

1307

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

1308

1309

1310

**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):

1311

1312

1313

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

**FL24 Attenuator angle:**

1318

1319

1320

FLASH.FEL/FLAPP2BEAMLINES/MOTOR1.FL24/FPOS

1321

1322

1323

**FL24 Polarization control:**

1324

1325

1326

FLASH.FEL/FLAPP2BEAMLINES/MOTOR14.FL24/FPOS

1327

1328

1329

**SysDC delay error:**

1330

1331

1332

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

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

1337

1338

1339

FLASH/CPUULGAN1.TIMING/ULGAN1/dT_alarm

FLASH/CPUULGAN1.TIMING/ULGAN1/dMPN

1344

1345

1346

**Laser error status:**

1347

1348

1349

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

1350

1351

1352

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)//

1365

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

1366

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

1367

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)//

1373

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

1374

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

1375

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}}

1380

//always saved (PBD2)//

1381

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

1382

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

1383

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}}

1388

//always saved (PBD)//

1389

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

1390

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

1391

desc: rms jitter of the fs-Oscillator

units: fs

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

1397

1398

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

1413

1414

1415

Delay (encoder readback):

1416

1417

1418

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**

1429

1430

(% class="wrapped" %)

1431

|(((

1432

FL2PPL FL26 REMI Attenuation: HWP motor current position

1433

)))|(((

1434

FLASH.FEL/FLAPP2BEAMLINES/MOTOR11.FL26B/FPOS

1435

)))

1436

|(((

1437

FL2PPL FL26 REMI Polarization: linear polarization angle

1438

)))|(((

1439

FLASH.FEL/FLAPP2BEAMLINES/MOTOR12.FL26B/FPOS

1440

)))

1441

|(((

1442

FL2PPL FL26 REMI Diagnostics: NIR spectrum

1443

)))|(((

1444

FLASH.LASER/MOD26.SPECT/REMI/DAQ_CHANNEL

1445

)))

1446

|(((

1447

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

1448

)))|(((

1449

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

1450

)))

1451

|(((

1452

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

1453

)))|(((

1454

FLASH.LASER/MOD26.PES/RE_OUT/DAQ_CHANNEL

1455

)))

1456

|(((

1457

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

1458

)))|(((

1459

FLASH.LASER/TAMC532DMA/ULGAN1_S5/CH04.TD

1460

)))

1461

|(((

1462

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

1463

)))|(((

1464

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

1465

)))

1466

|(((

1467

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

1468

)))|(((

1469

FLASH.LASER/MOD26.PES/INC_BOX/DAQ_CHANNEL

1470

)))

1471

|(((

1472

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

1473

)))|(((

1474

FLASH.LASER/TAMC532DMA/ULGAN1_S5/CH05.TD

1475

)))

1476

|(((

1477

FL2PPL FL26 REMI In coupling: filter wheel 1 position

1478

)))|(((

1479

FLASH/MOD26.FW1/FLASH2MOD26/pos

1480

)))

1481

|(((

1482

FL2PPL FL26 REMI In coupling: filter wheel 2 position

1483

)))|(((

1484

FLASH/MOD26.FW2/FLASH2MOD26/pos

1485

)))

1486

|(((

1487

FL2PPL FL26 REMI: Energy meter REMI incoupling breadboard

1488

)))|(((

1489

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

1490

)))

1491

|(((

1492

FL2PPL FL26 REMI Incoupling: focusing lens position

1493

)))|(((

1494

FLASH.FEL/FLAPP2BEAMLINES/MOTOR3.FL26B/FPOS

1495

)))

1496

|(((

1497

FL2PPL FL26 REMI Incoupling: nearfield

1498

)))|(((

1499

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

1500

)))

1501

|(((

1502

FL2PPL FL26 REMI Incoupling: focus

1503

)))|(((

1504

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

1505

)))

1506

|(((

1507

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

1508

)))|(((

1509

FLASH.LASER/MOD26.PES/LAM_DIFF/DAQ_CHANNEL

1510

)))

1511

|(((

1512

FL2PPL FL26 REMI Drift: forward signal (PD1) raw

1513

)))|(((

1514

FLASH.LASER/TAMC532DMA/ULGAN1_S5/CH00.TD

1515

)))

1516

|(((

1517

FL2PPL FL26 REMI Drift: backward signal (PD2) raw

1518

)))|(((

1519

FLASH.LASER/TAMC532DMA/ULGAN1_S5/CH01.TD

1520

)))

1521

|(((

1522

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

1523

)))|(((

1524

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

1525

)))

1526

|(((

1527

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

1528

)))|(((

1529

FLASH.FEL/FLAPP2BEAMLINES/MOTOR14.FL26B/FPOS

1530

)))

1531

|(((

1532

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

1533

)))|(((

1534

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

1535

)))

1536

|(((

1537

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

1538

)))|(((

1539

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

1540

)))

1541

|(((

1542

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

1543

)))|(((

1544

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

1545

)))

1546

|(((

1547

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

1548

)))|(((

1549

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

1550

)))

1551

|(((

1552

Temperature controlled fiber (Temp of the fiber delay sysdc)

1553

)))|(((

1554

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

1555

)))

1556

|(((

1557

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

1558

)))|(((

1559

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

1560

)))

1561

1562

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

1563

1564

1565

=== "/uncategorized/" ===

1566

1567

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

1568

1569

1570

=== HDF5 structure revisions ===

1571

1572

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:

1573

1574

1575

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

1576

* 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".

1577

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

1578

1579

(% class="wrapped" %)

1580

|=(((

1581

earlier HDF path (vers. 0.2)

)))|=(((

is now (vers. 0.3)

)))

|(((

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

1587

)))|(((

1588

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

1589

)))

1590

|(((

1591

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

1592

)))|(((

1593

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

1594

)))

1595

|(((

1596

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

1597

)))|(((

1598

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

1599

)))

1600

|(((

1601

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

1602

)))|(((

1603

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

1604

)))

1605

|(((

1606

/Experiment/Pump probe laser/BPM/position x

1607

)))|(((

1608

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

1609

)))

1610

|(((

1611

/Experiment/Pump probe laser/BPM/position y

1612

)))|(((

1613

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

1614

)))

1615

|(((

1616

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

1617

)))|(((

1618

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

1619

)))

1620

|(((

1621

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

1622

)))|(((

1623

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

1624

)))

1625

|(((

1626

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

1627

)))|(((

1628

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

1629

)))

1630

|(((

1631

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

1632

)))|(((

1633

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

1634

)))

1635

|(((

1636

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

1637

)))|(((

1638

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

1639

)))

1640

|(((

1641

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

1642

)))|(((

1643

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

1644

)))

1645

|(((

1646

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

1647

)))|(((

1648

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

1649

)))

1650

|(((

1651

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

1652

)))|(((

1653

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

1654

)))

1655

|(((

1656

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

1657

)))|(((

1658

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

1659

)))

1660

|(((

1661

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

1662

)))|(((

1663

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

1664

)))

1665

|(((

1666

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

1667

)))|(((

1668

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

1669

)))

1670

|(((

1671

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

1672

)))|(((

1673

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

1674

)))

1675

1676

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Wiki source code of The FLASH HDF5 structure

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