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Changes for page The FLASH HDF5 structure

Last modified by sndueste on 2026-01-19 14:35
From version 105.3
edited by sndueste
on 2026-01-09 15:16
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To version 95.2
edited by sndueste
on 2025-05-19 16:56
Change comment: There is no comment for this version

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Content
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1 +{{layout}}
2 +{{layout-section ac:type="single"}}
3 +{{layout-cell}}
1 1  == Contents ==
2 2  
3 3  
... ... @@ -5,20 +5,10 @@
5 5  {{toc/}}
6 6  
7 7  
8 -== General information about HDF5 and how to look on it ==
11 +== General information about HDF5 ==
9 9  
10 10  HDF5 is a data format maintained by the HDF group. For detailed general information see [[here>>url:https://portal.hdfgroup.org/display/support||shape="rect"]]
11 11  
12 -The easiest way to look at the HDF5 files from your beamtime is to use the Jupyter notebook interface to Maxwell:  [[https:~~/~~/max-jhub.desy.de/>>https://max-jhub.desy.de/]]
13 -
14 - The file content can be browsed by doubbelclicking on the file.
15 -
16 -Typically the Jupyter notebook starts at your home directory and you have to create a (soft) link to your beamtime folder: open a terminal window (File->New-> Terminal) nad create the link via:
17 -
18 -{{code language="none"}}
19 -> silx view
20 -{{/code}}
21 -
22 22  To download the HDF5 Viewer click [[here>>url:https://portal.hdfgroup.org/display/support/Download+HDFView||shape="rect"]]
23 23  
24 24  For use on the DESY Maxwell or PAL (max-fsc or pal) **hdfview** is available in the xray module :
... ... @@ -68,17 +68,25 @@
68 68  {{/expand}}
69 69  
70 70  === HDF examples: ===
64 +{{/layout-cell}}
65 +{{/layout-section}}
71 71  
67 +{{layout-section ac:type="three_equal"}}
68 +{{layout-cell}}
72 72  * ADC data as example for **fast** **data** (10 Hz):            
73 73  
74 74  [[image:attach:image2020-11-16_15-26-28.png||height="250"]]
72 +{{/layout-cell}}
75 75  
74 +{{layout-cell}}
76 76  * 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}})
77 77  
78 78   ( as example only every 10th train ID is listed in the HDF group "index")
79 79  
80 80  [[image:attach:image2020-11-16_15-31-45.png||height="250"]]
80 +{{/layout-cell}}
81 81  
82 +{{layout-cell}}
82 82  * (((
83 83  //zraw// group contains the **original DAQ (DOOCS) names**
84 84  )))
... ... @@ -87,7 +87,11 @@
87 87  
88 88  
89 89  [[image:attach:image2020-11-16_16-26-3.png||height="400"]]
91 +{{/layout-cell}}
92 +{{/layout-section}}
90 90  
94 +{{layout-section ac:type="single"}}
95 +{{layout-cell}}
91 91  {{info}}
92 92  === There are different options that help you to work with the FLASH HDF5 data in Python ===
93 93  
... ... @@ -94,16 +94,20 @@
94 94  * The currently developed option for large data sets: [[the FAB package>>url:https://hasfcpkg.desy.de/fab/fab.html||shape="rect"]] ... see below
95 95  * and for smaller projects:  (% class="Object" %)[[https:~~/~~/gitlab.desy.de/christopher.passow/flash-daq-hdf>>url:https://gitlab.desy.de/christopher.passow/flash-daq-hdf||shape="rect"]]
96 96  
97 -(% class="Object" %)See also the collection of Demo data and sample scripts : [[Collection of HDF5 sample data from different beamlines>>doc:FLASHUSER.Offline data analysis (DAQ).Collection of HDF5 sample data from different beamlines.WebHome]] and [[DEMO - Working with FLASH data>>doc:FLASHUSER.Offline data analysis (DAQ).DEMO - Working with FLASH data.WebHome]]
102 +(% class="Object" %)See also the collection of Demo data and sample scripts : [[doc:FS-FLASH USER tmp.Data Acquisition and controls 1.DAQ and controls overview.Offline data analysis (DAQ).Collection of HDF5 sample data from different beamlines.WebHome]] and [[doc:FS-FLASH USER tmp.Data Acquisition and controls 1.DAQ and controls overview.Offline data analysis (DAQ).DEMO - Working with FLASH data.WebHome]]
98 98  {{/info}}
104 +{{/layout-cell}}
105 +{{/layout-section}}
99 99  
107 +{{layout-section ac:type="single"}}
108 +{{layout-cell}}
109 +
100 100  
101 -
102 102  == Complete list of recordable parameters ==
103 103  
104 104  The complete list for the relation between DOOCS names and HDF5 names for the recordable parameters can be found in [[DESY's Repository>>url:https://stash.desy.de/projects/CS/repos/pah/browse/src/camp/data/channel2HdfName.dat||shape="rect"]].
105 105  
106 -== Most popular FLASH parameters and their names in HDF5, DOOCS and (.raw) DAQ ==
115 +== Most popular FLASH parameters and their names in HDF5, DOOCS and (raw) DAQ ==
107 107  
108 108  {{id name="DOOCSparameters"/}}
109 109  
... ... @@ -115,7 +115,7 @@
115 115  
116 116  The previously used naming scheme (2024 and before) can be found here:
117 117  
118 -{{expand expanded="false" title="FLASH1 naming scheme used until 2024"}}
127 +{{expand expanded="false" title="FLASH1 Naming scheme used until 2024"}}
119 119  ==== (% id="cke_bm_8853497S" style="display:none" %) (%%)Beamline info (FLASH1) ====
120 120  
121 121  {{code language="none"}}/FL1/Beamlines/Attenuator/pressure{{/code}}
... ... @@ -538,8 +538,8 @@
538 538  units: nm
539 539  
540 540  [[Contents>>doc:||anchor="Contents"]]
550 +{{/expand}}
541 541  
542 -
543 543  ==== ====
544 544  
545 545  
... ... @@ -547,16 +547,16 @@
547 547  
548 548  ===== bunch repetition rate =====
549 549  
550 -{{code language="none"}}/Timing/repetition rate{{/code}}
559 +{{code language="none"}}/FL1/Timing/repetition rate{{/code}}
551 551  //always saved (PBD)//
552 552  DOOCS prop : {{code language="none"}}FLASH.DIAG/TIMER/FLASHCPUTIME1.0/REP_RATE_KHZ.1{{/code}}
553 -DAQ channel: {{code language="none"}}FLASH.DIAG/TIMER/FLASHCPUTIME1.0/REP_RATE_KHZ.1{{/code}}
562 +DAQ channel: {{code language="none"}}TTF2.UTIL/LASER.CONTROL/GUN/PULSE_FREQ{{/code}}
554 554  desc: repetition rate of the bunches / pulses within the burst (FLASH1)
555 555  units: kHz
556 556  
557 557  ===== set number of pulses =====
558 558  
559 -(% style="color:#ff6600" %)(HDF5 name not yet implemented - see zraw)(% style="color:#ff0000" %){{code language="none"}}/Timing/set number of bunches {{/code}}(%%)
568 +(% style="color:#ff6600" %)(HDF5 name not yet implemented - see zraw)(% style="color:#ff0000" %){{code language="none"}}/FL1/Timing/set number of bunches {{/code}}(%%)
560 560  //always saved (PBD)//
561 561  DOOCS prop : {{code language="none"}}FLASH.DIAG/TIMINGINFO/TIME1.BUNCH_FIRST_INDEX.1 [4th number]{{/code}}
562 562  DAQ channel: {{code language="none"}}FLASH.DIAG/TIMINGINFO/TIME1.BUNCH_FIRST_INDEX.1 [4th number]{{/code}}
... ... @@ -615,8 +615,8 @@
615 615  {{/expand}}
616 616  
617 617  
627 +[[Contents>>doc:||anchor="Contents"]]
618 618  
619 -
620 620  ==== Pump Probe Laser (FLASH1) ====
621 621  
622 622  **PIGLET (PG laser)**
... ... @@ -732,9 +732,10 @@
732 732  * {{code language="none"}}number of samples{{/code}}: total number of samples recorded for each 10 Hz trigger
733 733  
734 734  [[Contents>>doc:||anchor="Contents"]]
735 -{{/expand}}
736 736  
737 737  
746 +
747 +
738 738  === FLASH2 ===
739 739  
740 740  There is analog to FLASH1 a permanently running "PhotonDagnostic DAQ FLASH2" (PBD2) and 2 User DAQs
... ... @@ -742,6 +742,7 @@
742 742  ==== Beamline info (FLASH2) ====
743 743  
744 744  {{code language="none"}}/FL2/Beamlines/Attenuator/pressure  {{/code}}
755 +(% style="color:#000000" %)//always saved (PBD2)// (%%)
745 745  (% style="color:#000000" %)DOOCS prop : {{code language="none"}}FLASH.FEL/ATT.GAS_DOSING/FL2.HALL/PRESSURE{{/code}} (%%)
746 746  (% style="color:#000000" %)DAQ channel:  {{code language="none"}}FLASH.FEL/ATT.GAS_DOSING/FL2.HALL/PRESSURE{{/code}} (%%)
747 747  (% style="color:#000000" %)desc: set pressure in the gas attenuator (%%)
... ... @@ -748,6 +748,7 @@
748 748  (% style="color:#000000" %)units: mbar
749 749  
750 750  {{code language="none"}}/FL2/Beamlines/FL20/Shutter/open{{/code}}
762 +//always saved (PBD2)//
751 751  DOOCS prop : {{code language="none"}}FLASH.FEL/ADC.SIS.FL2FS/FL20.SHUTTER/CH00.TD{{/code}}
752 752  DAQ channel: {{code language="none"}}FLASH.FEL/ADC.SIS.FL2FS/FL20.SHUTTER{{/code}}
753 753  desc: BL Beamline Fast shutter state: 1 is open, 0 is closed ( for technical reasons there are 100 vales of this state saved ...)
... ... @@ -755,6 +755,7 @@
755 755  
756 756  
757 757  {{code language="none"}}/FL2/Beamlines/Filter wheel/position wheel 1{{/code}}
770 +//always saved (PBD2)//
758 758  DOOCS prop : {{code language="none"}}FLASH.FEL/FL20H.PH.MOTOR/MOTOR1.MOT3/FPOS{{/code}}
759 759  DAQ channel: FLASH.FEL/FL20H.PH.MOTOR/MOTOR1.MOT3/FPOS
760 760  desc: Position of the BL filter wheel 1 - to correlate with the filter material please look **[[here>>doc:FS-FLASH USER tmp.jddd-linked help pages.Filter-Units.Filter wheels in FLASH1 and FLASH2.WebHome]]**
... ... @@ -761,6 +761,7 @@
761 761  units: degree
762 762  
763 763  /FL2/Beamlines/Filter wheel/position wheel 2
777 +always saved (PBD2)
764 764  DOOCS prop : {{code language="none"}}FLASH.FEL/FL20H.PH.MOTOR/MOTOR2.MOT3/FPOS{{/code}}
765 765  DAQ channel: {{code language="none"}}FLASH.FEL/FL20H.PH.MOTOR/MOTOR2.MOT3/FPOS{{/code}}
766 766  desc: Position of the BL filter wheel 2 - to correlate with the filter material please look [[here>>doc:FS-FLASH USER tmp.jddd-linked help pages.Filter-Units.Filter wheels in FLASH1 and FLASH2.WebHome]]
... ... @@ -776,6 +776,7 @@
776 776  ==== Photon Diagnostics SASE ([[XGMD>>url:http://photon-science.desy.de/facilities/flash/photon_diagnostics/gmd_intensity_and_position/index_eng.html||shape="rect"]] - FLASH2) ====
777 777  
778 778  {{code language="none"}}/FL2/Photon Diagnostic/GMD/Average energy/energy tunnel{{/code}}
793 +//always saved (PBD2)//
779 779  DOOCS prop : {{code language="none"}}FLASH.FEL/XGM.PHOTONFLUX/FL2.TUNNEL/PHOTONFLUX.UJ{{/code}}
780 780  DAQ channel:{{code language="none"}} FLASH.FEL/XGM.PHOTONFLUX/FL2.TUNNEL/PHOTONFLUX.UJ{{/code}}
781 781  desc : calibrated average ( ~~ 20 sec averaging time ) SASE Energy/pulse measured in the TUNNEL before the attenuator (ion current)
... ... @@ -783,6 +783,7 @@
783 783  
784 784  
785 785  {{code language="none"}}/FL2/Photon Diagnostic/GMD/Pulse resolved energy/energy tunnel{{/code}}
801 +//always saved (PBD2)//
786 786  DOOCS prop : {{code language="none"}}FLASH.FEL/XGM.INTENSITY/FL2.TUNNEL/INTENSITY.TD{{/code}}
787 787  DAQ channel: {{code language="none"}}FLASH.FEL/XGM.INTENSITY/FL2.TUNNEL/INTENSITY.TD{{/code}}
788 788  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)
... ... @@ -817,6 +817,7 @@
817 817  
818 818  
819 819  {{code language="none"}}/FL2/Photon Diagnostic/GMD/Average Beam position/position tunnel horizontal{{/code}}
836 +//always saved (PBD2)//
820 820  DOOCS prop : {{code language="none"}}FLASH.FEL/XGM.POSMON/FL2.TUNNEL/IX.POS{{/code}}
821 821  DAQ channel: {{code language="none"}}FLASH.FEL/XGM.POSMON/FL2.TUNNEL/IX.POS{{/code}}
822 822  desc : the Average ( ~~ 20 sec averaging time ) Beam position of the photon Beam determined by the GMD (tunnel, x=horizontal)
... ... @@ -824,6 +824,7 @@
824 824  
825 825  
826 826  {{code language="none"}}/FL2/Photon Diagnostic/GMD/Average Beam position/position tunnel vertical{{/code}}
844 +//always saved (PBD2)//
827 827  DOOCS prop : {{code language="none"}}FLASH.FEL/XGM.POSMON/FL2.TUNNEL/IY.POS{{/code}}
828 828  DAQ channel: {{code language="none"}}FLASH.FEL/XGM.POSMON/FL2.TUNNEL/IY.POS{{/code}}
829 829  desc : the Average ( ~~ 20 sec averaging time ) Beam position of the photon Beam determined by the GMD (tunnel, x=horizontal)
... ... @@ -831,6 +831,7 @@
831 831  
832 832  
833 833  /FL2/Photon Diagnostic/GMD/Pulse resolved beam position/position tunnel x
852 +always saved (PBD2)
834 834  DOOCS prop : FLASH.FEL/XGM.BPM/FL2.HALL/X.TD
835 835  DAQ channel: FLASH.FEL/XGM.BPM/FL2.HALL:2
836 836  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 ...)
... ... @@ -850,6 +850,7 @@
850 850  
851 851  
852 852  {{code language="none"}}/FL2/Photon Diagnostic/Wavelength/OPIS tunnel/Processed/mean photon energy{{/code}}
872 +// saved opon request (PBD2)//
853 853  DOOCS prop : {{code language="none"}}FLASH.UTIL/STORE/FL2.TUNNEL.OPIS/VAL042{{/code}}
854 854  DAQ channel:{{code language="none"}} FLASH.UTIL/STORE/FL2.TUNNEL.OPIS/VAL042{{/code}}
855 855  desc : mean photon energy ( ~~ 1 sec averaging time ) measured in the TUNNEL for a specific bunch out of the bunch train (via photoelectron spectroscopy)
... ... @@ -857,6 +857,7 @@
857 857  
858 858  
859 859  {{code language="none"}}/FL2/Photon Diagnostic/Wavelength/OPIS tunnel/Processed/mean wavelength{{/code}}
880 +// saved opon request (PBD2)//
860 860  DOOCS prop : {{code language="none"}}FLASH.UTIL/STORE/FL2.TUNNEL.OPIS/VAL040{{/code}}
861 861  DAQ channel:{{code language="none"}} FLASH.UTIL/STORE/FL2.TUNNEL.OPIS/VAL040{{/code}}
862 862  desc : mean wavelength ( ~~ 1 sec averaging time ) measured in the TUNNEL for a specific bunch out of the bunch train (via photoelectron spectroscopy)
... ... @@ -864,28 +864,12 @@
864 864  
865 865  
866 866  {{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}}
888 +// saved opon request (PBD2)//
867 867  DOOCS prop : {{code language="none"}}FLASH.UTIL/STORE/FL2.TUNNEL.OPIS/VAL060{{/code}}
868 868  DAQ channel:{{code language="none"}} FLASH.UTIL/STORE/FL2.TUNNEL.OPIS/VAL060{{/code}}
869 869  desc : The bunch number of the bunch used for the wavelength calculation
870 870  units :
871 871  
872 -{{expand expanded="false" title="More detailed info on OPIS properties"}}
873 -FLASH.UTIL/STORE/FL2.TUNNEL.OPIS/VAL370,'%','relative width of photoline in percent of the FEL photon energy ROI1, rising flank'
874 -FLASH.UTIL/STORE/FL2.TUNNEL.OPIS/VAL375,'%','relative width of photoline in percent of the FEL photon energy ROI1, tailing flank'
875 -FLASH.UTIL/STORE/FL2.TUNNEL.OPIS/VAL470,'%','relative width of photoline in percent of the FEL photon energy ROI1, mean'
876 -FLASH.UTIL/STORE/FL2.TUNNEL.OPIS/VAL371,'%','relative width of photoline in percent of the FEL photon energy ROI2, rising flank'
877 -FLASH.UTIL/STORE/FL2.TUNNEL.OPIS/VAL376,'%','relative width of photoline in percent of the FEL photon energy ROI2, tailing flank'
878 -FLASH.UTIL/STORE/FL2.TUNNEL.OPIS/VAL471,'%','relative width of photoline in percent of the FEL photon energy ROI2, mean'
879 -FLASH.UTIL/STORE/FL2.TUNNEL.OPIS/VAL372,'%','relative width of photoline in percent of the FEL photon energy ROI3, rising flank'
880 -FLASH.UTIL/STORE/FL2.TUNNEL.OPIS/VAL377,'%','relative width of photoline in percent of the FEL photon energy ROI3, tailing flank'
881 -FLASH.UTIL/STORE/FL2.TUNNEL.OPIS/VAL472,'%','relative width of photoline in percent of the FEL photon energy ROI3, mean'
882 -FLASH.UTIL/STORE/FL2.TUNNEL.OPIS/VAL373,'%','relative width of photoline in percent of the FEL photon energy ROI4, rising flank'
883 -FLASH.UTIL/STORE/FL2.TUNNEL.OPIS/VAL378,'%','relative width of photoline in percent of the FEL photon energy ROI4, tailing flank'
884 -FLASH.UTIL/STORE/FL2.TUNNEL.OPIS/VAL473,'%','relative width of photoline in percent of the FEL photon energy ROI4, mean'
885 -FLASH.UTIL/STORE/FL2.TUNNEL.OPIS/VAL374,'%','relative width of photoline in percent of the FEL photon energy ROI5, rising flank'
886 -FLASH.UTIL/STORE/FL2.TUNNEL.OPIS/VAL379,'%','relative width of photoline in percent of the FEL photon energy ROI5, tailing flank'
887 -FLASH.UTIL/STORE/FL2.TUNNEL.OPIS/VAL474,'%','relative width of photoline in percent of the FEL photon energy ROI5, mean'
888 -{{/expand}}
889 889  
890 890  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"]])
891 891  
... ... @@ -899,6 +899,7 @@
899 899  ===== bunch charge =====
900 900  
901 901  {{code language="none"}}/FL2/Electron Diagnostic/Bunch charge/after undulator{{/code}}
907 +//always saved (PBD2)//
902 902  DOOCS prop : {{code language="none"}}FLASH.DIAG/PBD2.TOROID.ML/9FL2BURN/CHARGE.FLASH2{{/code}}
903 903  DAQ channel: {{code language="none"}}FLASH.DIAG/PBD2.TOROID.ML/9FL2BURN/CHARGE.FLASH2{{/code}}
904 904  desc: electron bunch charge FLASH2 (average value for each bunchtrain).
... ... @@ -908,6 +908,7 @@
908 908  ===== electron bunch energy =====
909 909  
910 910  {{code language="none"}}/FL2/Electron Diagnostic/Electron energy/energy of first bunch/behind undulators{{/code}}
917 +//always saved (PBD2)//
911 911  DOOCS prop : {{code language="none"}}FLASH.DIAG/BEAM_ENERGY_MEASUREMENT/FL2XTDS/ENERGY.FLASH2{{/code}}
912 912  DAQ channel: (% style="color:#5e6c84" %)TTF2.DAQ/PBD2.BEAM.ENERGY.MEAS.ML.COPY/FL2XTDS.ENERGY.FLASH2{{code language="none"}}{{/code}}(%%)
913 913  desc: electron bunch energy measured behind the undulator. Data is saved with 10 Hz - BUT (for computation reasons) only the energy of the FIRST bunch is recorded. The data is also available for (% style="color:#5e6c84" %)extraction and septum  in the beginning of FLASH2
... ... @@ -918,19 +918,21 @@
918 918  (% style="color: rgb(94, 108, 132); font-weight: 600; letter-spacing: 0px;" %)
919 919  ===== undulator settings =====
920 920  
921 -{{code language="none"}}/FL2/Electron Diagnostic/Undulator setting/set wavelength 1{{/code}}
922 -DOOCS prop : {{code language="none"}}FLASH.FEL/FL2.WAVELENGTHCONTROL/FLASH2.COLOR1/WAVELENGTH{{/code}}
923 -DAQ channel:  {{code language="none"}}FLASH.FEL/FL2.WAVELENGTHCONTROL/FLASH2.COLOR1/WAVELENGTH{{/code}}
924 -desc: Set value for the anticipated wavelength 1 . This parameter is used to set the undulator gap. It may however deviate from the actual wavelength by several % ... For 2 color operation there is also  the same parameter for COLOR 2
928 +{{code language="none"}}/FL2/Electron Diagnostic/Undulator setting/set wavelength{{/code}}
929 +//always saved (PBD2)//
930 +DOOCS prop : {{code language="none"}}TTF2.FEEDBACK/FL2.WAVELENGTHCONTROL/FLASH2/WAVELENGTH{{/code}}
931 +DAQ channel:  {{code language="none"}}TTF2.FEEDBACK/FL2.WAVELENGTHCONTROL/FLASH2/WAVELENGTH{{/code}}
932 +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 % ...
925 925  units: nm
926 926  
927 -{{code language="none"}}/FL2/Electron Diagnostic/Undulator setting/SASE13 gap{{/code}}
928 -DOOCS prop : {{code language="none"}}FLASH.UTIL/FL2.UND.MOTOR/FL2SASE13/GAP{{/code}}
929 -DAQ channel:  {{code language="none"}}FLASH.UTIL/FL2.UND.MOTOR/FL2SASE13/GAP{{/code}}
930 -desc: gap value of the undulators. This can be used to follow up how many undulators were closed and if there was a taper. 
935 +{{code language="none"}}/FL2/Electron Diagnostic/Undulator setting/SASE14 gap{{/code}}
936 +//always saved (PBD2)//
937 +DOOCS prop : {{code language="none"}}FLASH.UTIL/FL2.UND.MOTOR/FL2SASE14/GAP{{/code}}
938 +DAQ channel:  {{code language="none"}}FLASH.UTIL/FL2.UND.MOTOR/FL2SASE14/GAP{{/code}}
939 +desc: gap value of the undulators. This can be used to follow up how many undulators were closed and if there was a taper
931 931  units: mm
932 932  
933 -The gap values are saved for all 12 undulators (Nr 2 to 13). Undulator 13 is the one closest to the experimental hall.
942 +The gap values are saved for all 12 undulators (Nr 3 to 14). Undulator 14 is the one closest to the experimental hall.
934 934  
935 935  =====
936 936  arrival time (BAM) =====
... ... @@ -1214,7 +1214,7 @@
1214 1214  
1215 1215  {{view-file att--filename="FSLADAQ-DAQParameterlistFL24-2.pdf"}}{{/view-file}}
1216 1216  
1217 -internal link to parameter list: [[FS-LA DAQ - XWiki>>url:https://xwiki.desy.de/xwiki/bin/view/FSLADAQ/]]
1226 +
1218 1218  {{/info}}
1219 1219  
1220 1220  {{expand title="Laser parameters used until 2023"}}
... ... @@ -1689,3 +1689,8 @@
1689 1689  )))
1690 1690  
1691 1691  [[Contents>>doc:||anchor="Contents"]]
1701 +
1702 +
1703 +{{/layout-cell}}
1704 +{{/layout-section}}
1705 +{{/layout}}