Changes for page The FLASH HDF5 structure

Last modified by sndueste on 2025/02/06 10:55
From version 51.1
edited by sndueste
on 2021/02/17 16:30
Change comment: There is no comment for this version
To version 52.1
edited by sndueste
on 2021/04/15 12:08
Change comment: There is no comment for this version

Summary

Details

Page properties
Content
... ... @@ -534,7 +534,7 @@
534 534  //always saved (PBD)//
535 535  DOOCS prop : {{code language="none"}}TTF2.DIAG/PBD.TOROID.ML/12EXP/CHARGE.TD{{/code}}
536 536  DAQ channel: {{code language="none"}}TTF2.DIAG/PBD.TOROID.ML/12EXP{{/code}}
537 -desc: The bunch pattern as function of time in a burst recorded by toroide diagnostic BEHIND the undulator. (FLASH1)
537 +desc: The bunch pattern as function of time in a burst recorded by toroid diagnostic BEHIND the undulator. (FLASH1)
538 538  units:
539 539  \\
540 540  
... ... @@ -607,7 +607,7 @@
607 607  //always saved (PBD)//
608 608  DOOCS prop : {{code language="none"}}TTF2.FEL/TDOLFEL/TDOLFEL/STREAK.CAM.TIME{{/code}}
609 609  DOOCS prop : {{code language="none"}}TTF2.FEL/TDOLFEL/TDOLFEL/STREAK.CAM.TIME{{/code}}
610 -desc: delaytime between the optical laser and the FEL units: ps
610 +desc: delay time between the optical laser and the FEL units: ps
611 611  
612 612  \\
613 613  
... ... @@ -617,7 +617,7 @@
617 617  
618 618  ==== User Data (FLASH1) ====
619 619  
620 -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.
620 +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.
621 621  
622 622  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
623 623  
... ... @@ -645,13 +645,13 @@
645 645  {{code language="none"}}/FL1/Experiment/BL3/ADQ412 GHz ADC/CH03/TD{{/code}}
646 646  
647 647  DOOCS prop : {{code language="none"}}FLASH.FEL/ADC.ADQ.PG/EXP1.CH00/CH00.TD  or CH00.DAQ.TD{{/code}}
648 -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.
648 +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.
649 649  DAQ channel: {{code language="none"}}FLASH.FEL/ADC.ADQ.PG/EXP1.CH00{{/code}}
650 650  
651 651  In addition there are also additional parameters saved like:
652 652  
653 653  * {{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.
654 -* {{code language="none"}}number of samples{{/code}}: total number of samoles recorded for each 10 Hz trigger
654 +* {{code language="none"}}number of samples{{/code}}: total number of samples recorded for each 10 Hz trigger
655 655  * {{code language="none"}}error (ADC):{{/code}} 0 indicates that there was no error
656 656  
657 657  ===== MHz ADCs =====
... ... @@ -664,7 +664,7 @@
664 664  In addition there are also additional parameters saved like:
665 665  
666 666  * {{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.
667 -* {{code language="none"}}number of samples{{/code}}: total number of samoles recorded for each 10 Hz trigger
667 +* {{code language="none"}}number of samples{{/code}}: total number of samples recorded for each 10 Hz trigger
668 668  
669 669  [[Contents>>doc:||anchor="Contents"]]
670 670  
... ... @@ -825,7 +825,7 @@
825 825  // saved opon request (PBD2)//
826 826  DOOCS prop : {{code language="none"}}FLASH.UTIL/STORE/FL2.TUNNEL.OPIS/VAL040{{/code}}
827 827  DAQ channel:{{code language="none"}} FLASH.UTIL/STORE/FL2.TUNNEL.OPIS/VAL040{{/code}}
828 -desc : meanwavelength ( ~~ 1 sec averaging time ) measured in the TUNNEL for a specific bunch out of the bunch train (via photoelectron spectroscopy)
828 +desc : mean wavelength ( ~~ 1 sec averaging time ) measured in the TUNNEL for a specific bunch out of the bunch train (via photoelectron spectroscopy)
829 829  units : nm
830 830  
831 831  \\
... ... @@ -839,11 +839,11 @@
839 839  
840 840  \\
841 841  
842 -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 savng the compleate 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"]] ( respobsible for [[OPIS>>url:http://photon-science.desy.de/facilities/flash/photon_diagnostics/opis_spectrometer/index_eng.html||shape="rect"]])
842 +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"]])
843 843  
844 844  \\
845 845  
846 -In case OPIS was not operating there is still informaton 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 ...
846 +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 ...
847 847  
848 848  \\
849 849  
... ... @@ -862,8 +862,21 @@
862 862  
863 863  \\
864 864  
865 -===== undulator settings =====
865 +===== electron bunch energy =====
866 866  
867 +{{code language="none"}}/FL2/Electron Diagnostic/Electron energy/energy of first bunch/behind undulators{{/code}}
868 +//always saved (PBD2)//
869 +DOOCS prop : {{code language="none"}}FLASH.DIAG/BEAM_ENERGY_MEASUREMENT/FL2XTDS/ENERGY.FLASH2{{/code}}
870 +DAQ channel: (% style="color: rgb(94,108,132);" %)TTF2.DAQ/PBD2.BEAM.ENERGY.MEAS.ML.COPY/FL2XTDS.ENERGY.FLASH2{{code language="none"}}{{/code}}(%%)
871 +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
872 +
873 +(% style="letter-spacing: 0.0px;" %)units: (% class="twikiNewLink" %)MeV
874 +
875 +\\
876 +
877 +(% style="color: rgb(94,108,132);font-weight: 600;letter-spacing: 0.0px;" %)
878 +undulator settings
879 +
867 867  {{code language="none"}}/FL2/Electron Diagnostic/Undulator setting/set wavelength{{/code}}
868 868  //always saved (PBD2)//
869 869  DOOCS prop : {{code language="none"}}TTF2.FEEDBACK/FL2.WAVELENGTHCONTROL/FLASH2/WAVELENGTH{{/code}}