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~|~|width="13" height="12"~]~]>>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~|~|width="13" height="12"~]~]>>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

{{code language="none"}}> silx view{{/code}}

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[[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"]]

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=== 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"]]

=== Reference implementation (Python) ===

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(imperative) (% 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" %)(object oriented) [[https:~~/~~/gitlab.desy.de/christopher.passow/fdh-builder>>url:https://gitlab.desy.de/christopher.passow/fdh-builder.git||shape="rect"]]

== 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~|~|width="13" height="12"~]~]>>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.

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=== 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

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

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//always saved (PBD)//

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

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

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desc: BL Beamline Fast shutter state

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

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

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

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//always saved (PBD)//

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

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

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

units: degree

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

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//always saved (PBD)//

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

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

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desc: Position of the PG filter wheel 1

units: degree

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

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//always saved (PBD)//

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

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

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desc: Position of the PG filter wheel 2

units: degree

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

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//always saved (PBD)//

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

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

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desc: Position of the PG filter wheel 3

units: degree

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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: rgb(0,0,0);" %)**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: rgb(0,0,0);" %)DOOCS prop : {{code language="none"}}TTF2.DAQ/PHFLUX/OUT04/VAL{{/code}} (%%)

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(% style="color: rgb(0,0,0);" %)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]]**

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(% style="letter-spacing: 0px; color: rgb(0, 0, 0)" %)**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: rgb(0,0,0);" %)DOOCS prop : {{code language="none"}}FLASH.FEL/XGM.PHOTONFLUX/FL1.TUNNEL/PHOTONFLUX.UJ{{/code}} (%%)

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(% style="color: rgb(0,0,0);" %)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

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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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(% style="color: rgb(0,0,0);" %)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: rgb(0,0,0);" %)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"]]

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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

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

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

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

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

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

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desc : XUV Spectrum measured with the "tunnel spectrometer"

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units :

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

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

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

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

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

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units : nm

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

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

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DOOCS prop : ==

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DAQ channel: ==

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

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units : nm

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

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

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DOOCS prop : ==

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

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

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units :

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

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

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DOOCS prop : ==

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DAQ channel: ==

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

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units : eV

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

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

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DOOCS prop : ==

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DAQ channel: ==

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

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units : eV

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

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

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DOOCS prop : ==

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

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

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units :

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

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

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DOOCS prop : ==

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DAQ channel: ==

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

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units : nm

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

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

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DOOCS prop : ==

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DAQ channel: ==

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

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units : nm

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

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

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

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

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//always saved (PBD)//

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

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

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desc: electron bunch charge (FLASH1)

units: nC

=====

arrival time (BAM) =====

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

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

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

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

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

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** acc: 4DBC3 → FL0.DBC2

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** FL1: 1SFELC → FL1.SFELC

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** FL2: FL2XTDS → (% style="color: rgb(23,43,77);" %)FL2.SEED5

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

431

* [[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]]

432

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

\\

(% style="color: rgb(0,0,0);" %)**Discontinued BAM data recording **

439

440

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

441

//always saved (PBD)//

442

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

443

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

444

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).

445

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

\\

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

450

//always saved (PBD)//

451

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

452

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

453

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

454

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

455

456

457

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

458

459

(% style="color: rgb(255,102,0);" %)**DBC2**/electron bunch arrival time (HDF5 name not yet implemented - see zraw)(%%)

460

//always saved (PBD)//

461

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

462

DAQ (% style="color: rgb(0,0,0);" %)channel: FLASH.SDIAG/BAM/**FL0.DBC2**/ARRIVAL_TIME.ABSOLUTE.SA1.COMP (%%)

463

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).

464

465

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

\\

(% style="color: rgb(255,102,0);" %)DBC2/electron bunch arrival time (raw) (HDF5 name not yet implemented - see zraw){{code language="none"}}/FL1/Electron Diagnostic/BAM/{{/code}}(%%)

470

//always saved (PBD)//

471

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

472

DAQ channel: (% style="color: rgb(0,0,0);" %)FLASH.SDIAG/BAM/FL0.DBC2/ARRIVAL_TIME.ABSOLUTE (%%)

473

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).

474

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

\\

(% style="color: rgb(255,102,0);" %)DBC2/error (HDF5 name not yet implemented - see zraw){{code language="none"}}/FL1/Electron Diagnostic/BAM/{{/code}}(%%)

479

//always saved (PBD)//

480

DOOCS prop : FLASH.SDIAG/BAM/FL0.DBC2/ARRIVAL_TIM(% style="color: rgb(0,0,0);" %)E.bamError(%%)

481

DAQ channel: (% style="color: rgb(0,0,0);" %)FLASH.SDIAG/BAM/FL0.DBC2/ARRIVAL_TIME.BAMERROR(%%)

482

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

\\

(% style="color: rgb(255,102,0);" %)DBC2/status (HDF5 name not yet implemented - see zraw){{code language="none"}}/FL1/Electron Diagnostic/BAM/{{/code}}(%%)

487

//always saved (PBD)//

488

DOOCS prop : FLASH.SDIAG/BAM/FL0.DBC2/ARRIVAL_TIM(% style="color: rgb(0,0,0);" %)E..bamStatus.//1//(%%)

489

DAQ channel(% style="color: rgb(0,0,0);" %): FLASH.SDIAG/BAM/FL0.DBC2/ARRIVAL_TIME.BAMSTATUS.1(%%)

490

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

\\

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

495

496

(% 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: rgb(255,102,0);" %)/electron bunch arrival time (HDF5 name not yet implemented - see zraw)

497

498

//always saved (PBD)//

499

(% style="color: rgb(23,43,77);" %)**FL1.SFELC**(%%)

500

(% style="color: rgb(0,0,0);" %)channel: FLASH.SDIAG/BAM/(% style="color: rgb(0, 0, 0); color: rgb(23, 43, 77)" %)FL1.SFELC(% style="color: rgb(0,0,0);" %)/ARRIVAL_TIME.ABSOLUTE.SA1.COMP

501

{{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).

502

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

\\

\\

(% style="color: rgb(23,43,77);" %)SFELC(% style="color: rgb(255,102,0);" %)/electron bunch arrival time (raw) (HDF5 name not yet implemented - see zraw){{code language="none"}}/FL1/Electron Diagnostic/BAM/{{/code}}(%%)

509

//always saved (PBD)//

510

DOOCS prop : FLASH.SDIAG/BAM/(% style="color: rgb(23,43,77);" %)FL1.SFELC(%%)/ARRIVAL_TIME.ABSOLUTE

511

DAQ channel:** **(% style="color: rgb(0,0,0);" %)FLASH.SDIAG/BAM/FL1.SFELC/ARRIVAL_TIME.ABSOLUTE (%%)

512

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).

513

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

\\

(% style="color: rgb(23,43,77);" %)SFELC(% style="color: rgb(255,102,0);" %)/error (HDF5 name not yet implemented - see zraw){{code language="none"}}/FL1/Electron Diagnostic/BAM/{{/code}}(%%)

518

//always saved (PBD)//

519

DOOCS prop : FLASH.SDIAG/BAM/(% style="color: rgb(23,43,77);" %)FL1.SFELC(%%)/ARRIVAL_TIM(% style="color: rgb(0,0,0);" %)E.bamError(%%)

520

DAQ channel(% style="color: rgb(0,0,0);" %): FLASH.SDIAG/BAM/FL1.SFELC/ARRIVAL_TIME.BAMERROR(%%)

521

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

\\

(% style="color: rgb(23,43,77);" %)SFELC(% style="color: rgb(255,102,0);" %)/status (HDF5 name not yet implemented - see zraw){{code language="none"}}/FL1/Electron Diagnostic/BAM/{{/code}}(%%)

526

//always saved (PBD)//

527

DOOCS prop : FLASH.SDIAG/BAM/(% style="color: rgb(23,43,77);" %)FL1.SFELC(%%)/ARRIVAL_TIM(% style="color: rgb(0,0,0);" %)E..bamStatus.//1//(%%)

528

DAQ chann(% style="color: rgb(0,0,0);" %)el: FLASH.SDIAG/BAM/FL1.SFELC/ARRIVAL_TIME.BAMSTATUS.1(%%)

529

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 =====

536

537

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

538

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

539

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

540

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

541

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}}

546

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

547

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

548

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

549

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}}

554

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

555

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

556

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

557

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

558

units: fs

559

560

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

561

562

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

563

//always saved (PBD)//

564

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

565

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

566

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

567

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

568

\\

569

570

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

571

//always saved (PBD)//

572

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

573

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

574

desc: electron bunch energy bunch resolved

575

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

\\

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

580

//always saved (PBD)//

581

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

582

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

583

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

units: nm

\\

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

\\

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

592

593

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

594

595

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

596

//always saved (PBD)//

597

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

598

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

599

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

units: kHz

\\

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

604

605

(% style="color: rgb(255, 0, 0); color: rgb(255, 102, 0)" %)(HDF5 name not yet implemented - see zraw)(% style="color: rgb(255,0,0);" %){{code language="none"}}/FL1/Timing/set number of bunches {{/code}}(%%)

606

//always saved (PBD)//

607

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

608

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

609

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

610

units:

611

612

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

613

614

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

615

//always saved (PBD)//

616

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

617

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

618

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 =====

623

624

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

625

//always saved (PBD)//

626

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

627

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

628

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}}

635

//always saved (PBD)//

636

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

637

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

638

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 =====

643

644

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

645

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}}

650

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

651

second column: microseconds

652

third column: Train ID of FLASH

653

\\

654

655

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

\\

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

660

661

**PIGLET (PG laser)**

662

663

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

664

665

FLASH.LASER/FLACPUPGLASER1.PULSEENERGY/DIAG1out/PULSEENERGY.MEAN

666

FLASH.LASER/FLACPUPGLASER1.PULSEENERGY/PG1_incoupl/PULSEENERGY.MEAN

667

FLASH.LASER/FLACPUPGLASER1.PULSEENERGY/PG2_incoupl/PULSEENERGY.MEAN

668

FLASH.SYNC/LASER.LOCK.EXP/FLASH1.MOD1.PG.OSC/FMC0.MD22.1.ENCODER_POSITION.RD

669

FLASH.SYNC/LASER.LOCK.EXP/FLASH1.MOD1.PG.OSC/FMC0.MD22.1.ENCODER_POSITION_RAW.RD

670

FLASH.SYNC/LASER.LOCK.EXP/FLASH1.MOD1.PG.OSC/FMC0.MD22.1.POSITION.RD

671

672

**BL - Hidra laser **

673

674

Property,Units,Description

675

FLASH.LASER/MODBL.CAM/BL1.13.AC/DAQ_CHANNEL,'AU','FL1HIDRAPP1 Autocorrelation (IR) ROI readout'

676

FLASH.LASER/MODBL.CAM/BL1.14.VF/DAQ_CHANNEL,'AU','FL1HIDRAPP1 Virtual Focus Camera (IR) ROI readout'

677

FLASH.LASER/MODBL.SENSORBOARD/PDTRIG_CAMP/DAQ_CHANNEL,'au','FL1PPL Energy channels'

678

FLASH.LASER/MODBL.SPECT/CAMP_IR/DAQ_CHANNEL,'au','FL1PPL BL Table Spectrum'

679

FLASH.LASER/HIDRAPP1.SPECTRUM_ANALYSIS/CAMP_IR/DAQ_CHANNEL,'au','FL1PPL Spectrum Analysis'

680

FLASH.SYNC/LASER.LOCK.EXP/F1.PPL.OSC/FMC0.MD22.1.POSITION.RD,'ps','FL1PPL Optical Delay Line (act)'

681

FLASH.SYNC/LASER.LOCK.EXP/F1.PPL.OSC/FMC0.MD22.1.POSITION_SET.WR,'ps','FL1PPL Optical Delay Line (set)'

682

FLASH.SYNC/LASER.LOCK.EXP/F1.PPL.OSC/FMC0.MD22.1.ENCODER_POSITION.RD,'ps','FL1PPL Optical Delay Line (Encoder Readback)'

683

FLASH.FEL/FLAPPBEAMLINES.MOTOR/CAMP_Delayline/FPOS,'ps','FL1PPL NIR delay BL1 table (act)'

684

FLASH.FEL/FLAPPBEAMLINES.MOTOR/CAMP_Delayline/FPOS.SET,'ps','FL1PPL NIR delay BL1 table (set)'

685

FLASH.FEL/FLAPPBEAMLINES.MOTOR/CAMP.ATT/FPOS,'degree','FL1PPL Transmission degree (act)'

686

FLASH.FEL/FLAPPBEAMLINES.MOTOR/CAMP.ATT/FPOS.SET,'degree','FL1PPL Transmission degree (set)'

687

FLASH.FEL/FLAPPBEAMLINES.MOTOR/Camp_Focus_Lens/FPOS,'mm','FL1PPL Focus Mirror Stage Position (act)'

688

FLASH.FEL/FLAPPBEAMLINES.MOTOR/Camp_Focus_Lens/FPOS.SET,'mm','FL1PPL Focus Mirror Stage Position (set)'

689

FLASH.LASER/MODBL.FEEDFWD/BL1_Att/INPUT.Y,'%','FL1PPL Transmission rate'

690

FLASH.SYNC/LASER.LOCK.EXP/F1.PPL.OSC/CURRENT_INPUT_JITTER.RD,'fs','FL1PPL Sync. Jitter'

691

FLASH.SYNC/LASER.LOCK.EXP/F1.PPL.OSC/LOCK_STATUS.VALUE.RD,'au','FL1PPL Sync. Status'

\\

\\

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

699

700

//always saved (PBD)//

701

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

702

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

703

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

704

units : 0 no transmission , 1: full transmission

\\

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

709

//always saved (PBD)//

710

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

711

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

712

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

713

units : ps ( pos delay means IR comes later)

\\

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

718

//always saved (PBD)//

719

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

720

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

721

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

722

units : ps ( pos delay means IR comes later)

\\

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

727

//always saved (PBD)//

728

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

729

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

730

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

\\

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

735

//always saved (PBD)//

736

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

737

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

738

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

\\

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

\\

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

748

749

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.

750

751

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

752

753

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]]**

758

//saved on DEMAND in the user DAQ//

759

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

760

\\PG Beamline:

761

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

762

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

763

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

764

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

765

766

BL Beamlines:

767

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

768

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

769

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

770

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

771

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

772

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

773

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

774

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

775

776

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

777

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.

778

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

779

780

In addition there are also additional parameters saved like:

781

782

* {{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.

783

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

784

* {{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:

789

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

790

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

791

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

792

793

In addition there are also additional parameters saved like:

794

795

* {{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.

796

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

797

798

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

\\

\\

\\

=== FLASH2 ===

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

809

810

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

811

812

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

813

(% style="color: rgb(0,0,0);" %)//always saved (PBD2)// (%%)

814

(% style="color: rgb(0,0,0);" %)DOOCS prop : {{code language="none"}}FLASH.FEL/ATT.GAS_DOSING/FL2.HALL/PRESSURE{{/code}} (%%)

815

(% style="color: rgb(0,0,0);" %)DAQ channel: {{code language="none"}}FLASH.FEL/ATT.GAS_DOSING/FL2.HALL/PRESSURE{{/code}} (%%)

816

(% style="color: rgb(0,0,0);" %)desc: set pressure in the gas attenuator (%%)

817

(% style="color: rgb(0,0,0);" %)units: mbar(%%)

818

\\

819

820

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

821

//always saved (PBD2)//

822

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

823

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

824

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}}

829

//always saved (PBD2)//

830

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

831

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

832

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

837

always saved (PBD2)

838

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

839

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

840

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

846

847

[[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) ====

854

855

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

856

//always saved (PBD2)//

857

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

858

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

859

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}}

865

//always saved (PBD2)//

866

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

867

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

868

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)

869

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]]**

870

871

872

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

873

874

875

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

876

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

877

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

878

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

879

1. **Intensity per pulse sigma** (a.u. (more or less µJ ), (% style="color: rgb(0,0,0);" %)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)(%%))

880

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

881

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

882

1. Combined warning and error flags

883

884

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 !

\\

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

\\

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

904

//always saved (PBD2)//

905

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

906

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

907

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}}

913

//always saved (PBD2)//

914

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

915

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

916

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

922

always saved (PBD2)

923

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

924

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

925

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 ...)

926

units : mm

927

928

(x=horizontal, y = vertial)

929

930

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) ====

937

938

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

939

940

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

\\

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

945

// saved opon request (PBD2)//

946

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

947

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

948

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}}

954

// saved opon request (PBD2)//

955

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

956

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

957

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}}

963

// saved opon request (PBD2)//

964

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

965

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

966

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"]])

\\

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) ====

982

983

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

984

985

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

986

//always saved (PBD2)//

987

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

988

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

989

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

units: nC

\\

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

995

996

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

997

//always saved (PBD2)//

998

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

999

DAQ channel: (% style="color: rgb(94,108,132);" %)TTF2.DAQ/PBD2.BEAM.ENERGY.MEAS.ML.COPY/FL2XTDS.ENERGY.FLASH2{{code language="none"}}{{/code}}(%%)

1000

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: rgb(94,108,132);" %)extraction and septum in the beginning of FLASH2

1001

1002

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

\\

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

1007

undulator settings

1008

1009

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

1010

//always saved (PBD2)//

1011

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

1012

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

1013

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 % ...

1014

units: nm

1015

1016

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

1017

//always saved (PBD2)//

1018

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

1019

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

1020

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

1021

units: mm

1022

1023

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

1024

1025

=====

1026

arrival time (BAM) =====

1027

1028

1029

* 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"]]

1030

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

1031

* 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 ...

1032

* 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)

1033

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

1034

** acc: 4DBC3 → FL0.DBC2

1035

** FL1: 1SFELC → FL1.SFELC

1036

** FL2: 8FL2XTDS → (% style="color: rgb(23,43,77);" %)FL2.SEED5

1037

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

1038

* [[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]]

1039

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

\\

(% style="color: rgb(0,0,0);" %)**Discontinued BAM data recording **

1046

1047

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

1048

//always saved (PBD2)//

1049

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

1050

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

1051

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

1052

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

1053

1054

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

1055

//always saved (PBD2)//

1056

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

1057

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

1058

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

1059

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

\\

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

1065

* 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

1066

** 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

1067

* [[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]]

1068

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

1069

* 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}} ======

1076

1077

(% style="color: rgb(255,102,0);" %)**DBC2**/electron bunch arrival time (HDF5 name not yet implemented - see zraw){{code language="none"}}/FL2/Electron Diagnostic/BAM/{{/code}}

1078

1079

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

1080

1081

//always saved (PBD)//

1082

**FL0.DBC2**

1083

(% style="color: rgb(0,0,0);" %)channel: FLASH.SDIAG/BAM/**FL0.DBC2**/ARRIVAL_TIME.ABSOLUTE.SA2.COMP

1084

{{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).

1085

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

\\

(% style="color: rgb(255,102,0);" %)DBC2/electron bunch arrival time (raw) (HDF5 name not yet implemented - see zraw){{code language="none"}}/FL2/Electron Diagnostic/BAM/{{/code}}

1090

1091

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

1092

//always saved (PBD)//

1093

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

1094

(% style="color: rgb(0,0,0);" %)FLASH.SDIAG/BAM/FL0.DBC2/ARRIVAL_TIME.ABSOLUTE {{code language="none"}}DAQ channel: {{/code}}(%%)

1095

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).

1096

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

\\

(% style="color: rgb(255,102,0);" %)DBC2/error (HDF5 name not yet implemented - see zraw){{code language="none"}}/FL2/Electron Diagnostic/BAM/{{/code}}(%%)

1101

//always saved (PBD)//

1102

(% style="color: rgb(0,0,0);" %)E.bamError{{code language="none"}}DOOCS prop : FLASH.SDIAG/BAM/FL0.DBC2/ARRIVAL_TIM{{/code}}(%%)

1103

(% style="color: rgb(0,0,0);" %)FLASH.SDIAG/BAM/FL0.DBC2/ARRIVAL_TIME.BAMERROR{{code language="none"}}DAQ channel: {{/code}}(%%)

1104

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

\\

(% style="color: rgb(255,102,0);" %)DBC2/status (HDF5 name not yet implemented - see zraw){{code language="none"}}/FL2/Electron Diagnostic/BAM/{{/code}}(%%)

1109

//always saved (PBD)//

1110

(% style="color: rgb(0,0,0);" %)E..bamStatus.//2//{{code language="none"}}DOOCS prop : FLASH.SDIAG/BAM/FL0.DBC2/ARRIVAL_TIM{{/code}}(%%)

1111

(% style="color: rgb(0,0,0);" %): FLASH.SDIAG/BAM/FL0.DBC2/ARRIVAL_TIME.BAMSTATUS.2{{code language="none"}}DAQ channel{{/code}}(%%)

1112

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

\\

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

1117

1118

/FL2/Electron Diagnostic/BAM/**SEED5**(% style="color: rgb(255,102,0);" %)/electron bunch arrival time (HDF5 name not yet implemented - see zraw)

1119

1120

(% style="color: rgb(0,0,0);" %){{code language="none"}}/zraw/FLASH.SDIAG/BAM.DAQ/FL0.SEED5.ARRIVAL_TIME.ABSOLUTE.SA2.COMP/dGroup/{{/code}}

1121

1122

//always saved (PBD)//

1123

(% style="color: rgb(23,43,77);" %)**FL2.SEED5**(%%)

1124

(% style="color: rgb(0,0,0);" %)channel: FLASH.SDIAG/BAM/(% style="color: rgb(0, 0, 0); color: rgb(23, 43, 77)" %)**FL2.SEED5**(% style="color: rgb(0,0,0);" %)/ARRIVAL_TIME.ABSOLUTE.SA1.COMP

1125

{{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).

1126

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

\\

\\

(% style="color: rgb(23,43,77);" %)SEED5(% style="color: rgb(255,102,0);" %)/electron bunch arrival time (raw) (HDF5 name not yet implemented - see zraw){{code language="none"}}/FL2/Electron Diagnostic/BAM/{{/code}}

1133

1134

(% style="color: rgb(0,0,0);" %){{code language="none"}}/zraw/FLASH.SDIAG/BAM.DAQ/FL0.SEED5.ARRIVAL_TIME.ABSOLUTE.SA2/dGroup/{{/code}}(%%)

1135

//always saved (PBD)//

1136

(% style="color: rgb(23,43,77);" %)**FL2.SEED5**{{code language="none"}}DOOCS prop : FLASH.SDIAG/BAM//ARRIVAL_TIME.ABSOLUTE{{/code}}(%%)

1137

**~ **(% style="color: rgb(0,0,0);" %)FLASH.SDIAG/BAM/(% style="color: rgb(0, 0, 0); color: rgb(23, 43, 77)" %)**FL2.SEED5**(% style="color: rgb(0,0,0);" %)/ARRIVAL_TIME.ABSOLUTE {{code language="none"}}DAQ channel:{{/code}}(%%)

1138

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).

1139

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

\\

(% style="color: rgb(23,43,77);" %)SEED5(% style="color: rgb(255,102,0);" %)/error (HDF5 name not yet implemented - see zraw){{code language="none"}}/FL2/Electron Diagnostic/BAM/{{/code}}(%%)

1144

//always saved (PBD)//

1145

(% style="color: rgb(23,43,77);" %)**FL2.SEED5**(% style="color: rgb(0,0,0);" %)E.bamError{{code language="none"}}DOOCS prop : FLASH.SDIAG/BAM//ARRIVAL_TIM{{/code}}(%%)

1146

(% style="color: rgb(0,0,0);" %): FLASH.SDIAG/BAM/(% style="color: rgb(0, 0, 0); color: rgb(23, 43, 77)" %)**FL2.SEED5**(% style="color: rgb(0,0,0);" %)/ARRIVAL_TIME.BAMERROR{{code language="none"}}DAQ channel{{/code}}(%%)

1147

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

\\

(% style="color: rgb(23,43,77);" %)SEED5(% style="color: rgb(255,102,0);" %)/status (HDF5 name not yet implemented - see zraw){{code language="none"}}/FL2/Electron Diagnostic/BAM/{{/code}}(%%)

1152

//always saved (PBD)//

1153

(% style="color: rgb(23,43,77);" %)**FL2.SEED5**(% style="color: rgb(0,0,0);" %)E.bamStatus.//2//{{code language="none"}}DOOCS prop : FLASH.SDIAG/BAM//ARRIVAL_TIM{{/code}}(%%)

1154

(% style="color: rgb(0,0,0);" %)el: FLASH.SDIAG/BAM/(% style="color: rgb(0, 0, 0); color: rgb(23, 43, 77)" %)**FL2.SEED5**(% style="color: rgb(0,0,0);" %)/ARRIVAL_TIME.BAMSTATUS.2{{code language="none"}}DAQ chann{{/code}}(%%)

1155

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

\\

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

\\

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

1164

1165

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

1166

1167

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

1168

//always saved (PBD2)//

1169

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

1170

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

1171

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 ...)

1172

units: µs

1173

1174

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

1175

1176

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

1177

//always saved (PBD2)//

1178

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

1179

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

1180

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

units: kHz

\\

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

1186

1187

(% style="color: rgb(255, 0, 0); color: rgb(255, 102, 0)" %)(HDF5 name not yet implemented - see zraw)(% style="color: rgb(255,0,0);" %){{code language="none"}}/FL2/Timing/set number of bunches {{/code}}(%%)

1188

//always saved (PBD2)//

1189

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

1190

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

1191

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

1192

units:

1193

1194

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

1195

1196

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

1197

//always saved (PBD2)//

1198

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

1199

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

1200

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 =====

1205

1206

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

1207

//always saved (PBD2)//

1208

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

1209

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

1210

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}}

1217

//always saved (PBD2)//

1218

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

1219

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

1220

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 =====

1225

1226

//always saved (PBD2)

1227

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

1228

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

\\

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

1233

1234

//always saved (PBD2)//

1235

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

1236

second column: microseconds

1237

third column: Train ID of FLASH

1238

\\

1239

1240

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

\\

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

1245

1246

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.

1247

1248

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

1249

1250

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]]**

1255

//saved on DEMAND in the user DAQ//

1256

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

1257

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

1258

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

1259

\\{{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}}

\\

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

1264

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.

1265

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

1266

1267

In addition there are also additional parameters saved like:

1268

1269

* {{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.

1270

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

1271

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

1272

* {{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:

1277

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

1278

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

1279

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

1280

1281

In addition there are also additional parameters saved like:

1282

1283

* {{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.

1284

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

1285

1286

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

\\

\\

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

1293

1294

There may be more information available from the "Laser DAQ". laese contact your Laser Local Contact.

\\

**User delay**

Delay (set value):

{{code language="none"}}FLASH.SYNC/LASER.LOCK.EXP/F2.PPL.OSC/FMC0.MD22.0.POSITION_SET.WR{{/code}}

1303

1304

Delay (encoder readback):

1305

1306

{{code language="none"}}FLASH.SYNC/LASER.LOCK.EXP/F2.PPL.OSC/FMC0.MD22.0.POSITION.RD{{/code}}

OXC. jitter:

{{code language="none"}}FLASH.SYNC/LASER.LOCK.EXP/F2.PPL.OSC/CURRENT_INPUT_JITTER.RD{{/code}}

\\

**Pulse resolved energy:**

1315

1316

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

1317

1318

{{code language="none"}}/zraw/FLASH.LASER/FLASH2CPUULGAN1.ADCSCOPE/CH23.TD/dGroup{{/code}}

1319

1320

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

1321

1322

{{code language="none"}}/zraw/FLASH.LASER/FLASH2CPUULGAN1.ADCSCOPE/CH26.TD/dGroup{{/code}}

1323

1324

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.)

1325

1326

{{code language="none"}}/zraw/FLASH.LASER/MOD24.PES/FL24_userPD/dGroup{{/code}}

\\

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

1331

1332

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

1333

1334

{{code language="none"}}/zraw/FLASH.LASER/MOD24.PES/LAM.PD1/dGroup{{/code}}

1335

1336

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

1337

1338

{{code language="none"}}/zraw/FLASH.LASER/MOD24.PES/LAM.PD2/dGroup{{/code}}

1339

1340

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

1341

1342

{{code language="none"}}/zraw/FLASH.LASER/MOD24.PES/LAM.PDBAL/dGroup{{/code}}

1343

1344

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

\\

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

\\

**The LAM delay feedback** (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):

1353

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

\\

**Delay line act**:

\\

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

**Delay line set**:

\\

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

\\

**Delay line encoder:**

\\

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

\\

**Temperature feedback**:

\\

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

\\

**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):

\\

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

\\

\\

\\

\\

\\

**Attenuator angle:**

1403

1404

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

1405

1406

**Polarization control:**

1407

1408

{{code language="none"}}FLASH.FEL/FLAPP2BEAMLINES/MOTOR14.FL24/FPOS{{/code}}

1409

1410

**SysDC delay error:**

1411

1412

{{code language="none"}}FLASH.LASER/ULGAN1.DYNPROP/TCFIBER.DOUBLES/DOUBLE26{{/code}}

\\

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

1417

1418

{{code language="none"}}FLASH/CPUULGAN1.TIMING/ULGAN1/dT_alarm{{/code}}

1419

1420

{{code language="none"}}FLASH/CPUULGAN1.TIMING/ULGAN1/dMPN{{/code}}

1421

1422

**Laser error status:**

\\

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

1427

1428

{{code language="none"}}FLASH.LASER/MOD24.BEAMPOS/UV.VF_BP/CENTER.X{{/code}}

1429

1430

{{code language="none"}}FLASH.LASER/MOD24.BEAMPOS/UV.VF_BP/CENTER.Y{{/code}}

1431

1432

{{code language="none"}}FLASH.LASER/MOD24.CAM/UV.14.VF/ROI_SPECTRUM.X.SIG{{/code}}

\\

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

1439

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

1440

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

1441

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)//

1448

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

1449

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

1450

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}}

1456

//always saved (PBD2)//

1457

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

1458

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

1459

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}}

1465

//always saved (PBD)//

1466

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

1467

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

1468

desc: rms jitter of the fs-Oscillator

units: fs

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

\\

=== "/uncategorized/" ===

1477

1478

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

\\

=== HDF5 structure revisions ===

1483

1484

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:

\\

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

1489

* 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".

1490

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

\\

(% class="wrapped" %)

1495

|=(((

1496

earlier HDF path (vers. 0.2)

)))|=(((

is now (vers. 0.3)

)))

|(((

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

1502

)))|(((

1503

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

1504

)))

1505

|(((

1506

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

1507

)))|(((

1508

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

1509

)))

1510

|(((

1511

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

1512

)))|(((

1513

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

1514

)))

1515

|(((

1516

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

1517

)))|(((

1518

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

1519

)))

1520

|(((

1521

/Experiment/Pump probe laser/BPM/position x

1522

)))|(((

1523

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

1524

)))

1525

|(((

1526

/Experiment/Pump probe laser/BPM/position y

1527

)))|(((

1528

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

1529

)))

1530

|(((

1531

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

1532

)))|(((

1533

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

1534

)))

1535

|(((

1536

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

1537

)))|(((

1538

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

1539

)))

1540

|(((

1541

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

1542

)))|(((

1543

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

1544

)))

1545

|(((

1546

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

1547

)))|(((

1548

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

1549

)))

1550

|(((

1551

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

1552

)))|(((

1553

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

1554

)))

1555

|(((

1556

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

1557

)))|(((

1558

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

1559

)))

1560

|(((

1561

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

1562

)))|(((

1563

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

1564

)))

1565

|(((

1566

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

1567

)))|(((

1568

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

1569

)))

1570

|(((

1571

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

1572

)))|(((

1573

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

1574

)))

1575

|(((

1576

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

1577

)))|(((

1578

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

1579

)))

1580

|(((

1581

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

1582

)))|(((

1583

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

1584

)))

1585

|(((

1586

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

1587

)))|(((

1588

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

)))

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