Changes for page The FLASH HDF5 structure

Last modified by sndueste on 2025/02/06 10:55
From version 13.1
edited by sndueste
on 2019/09/17 16:58
Change comment: There is no comment for this version
To version 14.1
edited by sndueste
on 2019/09/17 17:52
Change comment: There is no comment for this version

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... ... @@ -36,7 +36,7 @@
36 36  
37 37  \\
38 38  
39 -== Most popular FLASH parameters and their names in HDF5 ==
39 +== Most popular FLASH parameters and their names in HDF5, DOOCS and (raw) DAQ ==
40 40  
41 41  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"]].
42 42  The most common and often used ones are summarized below:
... ... @@ -618,9 +618,7 @@
618 618  
619 619  \\
620 620  
621 -\\
622 622  
623 -
624 624  //always saved (PBD2)//
625 625  \\\\{{code language="none"}}/FL2/Photon Diagnostic/GMD/Pulse resolved beam position/position tunnel x DOOCS prop : FLASH.FEL/XGM.BPM/FL2.HALL/X.TDDAQ channel: FLASH.FEL/XGM.BPM/FL2.HALL:2 desc: {{/code}}Besides the well calibrated averaged beam position information there is also the option
626 626  {{code language="none"}}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 ...)units : mm    {{/code}}
... ... @@ -678,14 +678,12 @@
678 678  
679 679  \\
680 680  
681 -\\
682 -
683 683  ==== Electron Beam properties (FLASH2) ====
684 684  
685 685  ===== bunch charge =====
686 686  
687 687  {{code language="none"}}/FL2/Electron Diagnostic/Bunch charge/after undulator{{/code}}
688 -//always saved (PBD)//
684 +//always saved (PBD2)//
689 689  DOOCS prop : {{code language="none"}}FLASH.DIAG/PBD2.TOROID.ML/9FL2BURN/CHARGE.FLASH2{{/code}}
690 690  DAQ channel: {{code language="none"}}FLASH.DIAG/PBD2.TOROID.ML/9FL2BURN/CHARGE.FLASH2{{/code}}
691 691  desc: electron bunch charge (FLASH2)
... ... @@ -693,62 +693,53 @@
693 693  
694 694  \\
695 695  
696 -\\
692 +===== undulator settings =====
697 697  
698 -(% class="wrapped" %)
699 -|(((
700 -FLASH.UTIL/FL2.UND.MOTOR/FL2SASE14/GAP
701 -)))|(((
702 -/FL2/Electron Diagnostic/Undulator setting/SASE14 gap
703 -)))
704 -|(((
705 -TTF2.FEEDBACK/FL2.WAVELENGTHCONTROL/FLASH2/WAVELENGTH
706 -)))|(((
707 -/FL2/Electron Diagnostic/Undulator setting/set wavelength
708 -)))
694 +{{code language="none"}}/FL2/Electron Diagnostic/Undulator setting/set wavelength{{/code}}
695 +//always saved (PBD2)//
696 +DOOCS prop : {{code language="none"}}TTF2.FEEDBACK/FL2.WAVELENGTHCONTROL/FLASH2/WAVELENGTH{{/code}}
697 +DAQ channel:  {{code language="none"}}TTF2.FEEDBACK/FL2.WAVELENGTHCONTROL/FLASH2/WAVELENGTH{{/code}}
698 +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 % ...
699 +units: nm
709 709  
701 +{{code language="none"}}/FL2/Electron Diagnostic/Undulator setting/SASE14 gap{{/code}}
702 +//always saved (PBD2)//
703 +DOOCS prop : {{code language="none"}}FLASH.UTIL/FL2.UND.MOTOR/FL2SASE14/GAP{{/code}}
704 +DAQ channel:  {{code language="none"}}FLASH.UTIL/FL2.UND.MOTOR/FL2SASE14/GAP{{/code}}
705 +desc: Sgap value of the Undulators. this can be used to follow up how many undulators were closed and if there was a taper
706 +units: mm
707 +
708 +The gap values are saved for all 12 undulators (Nr 3 to 14)
709 +
710 710  =====
711 711  arrival time =====
712 712  
713 -{{code language="none"}}/FL1/Electron Diagnostic/BAM/4DBC3/electron bunch arrival time (low charge){{/code}}
714 -//always saved (PBD)//
713 +**FL1**{{code language="none"}}//Electron Diagnostic/BAM/4DBC3/electron bunch arrival time (low charge){{/code}}
714 +//always saved (PBD2)//
715 715  DOOCS prop : {{code language="none"}}FLASH.SDIAG/BAM/4DBC3/LOW_CHARGE_ARRIVAL_TIME{{/code}}
716 716  DAQ channel: {{code language="none"}}FLASH.SDIAG/BAM.DAQ/4DBC3.LOW_CHARGE_ARRIVAL_TIME{{/code}}
717 717  desc: Electron bunch arrival time measured with the BAM (more or less) before the undulator (pulse resolved data)
718 -units: ps (bigger numbers indicate later arrivaltime of the electrons)
719 -note: besides the arivaltime from FLASH1 there is also the FLASH2/3 electron arrival time saved. [[LINK to detailled 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"]] and to a recent  [[talk about the working principle of the BAM>>url:https://confluence.desy.de/download/attachments/134216957/BAM-basics_and_outlook-2018_DESY-template_16-9Format.pdf?version=1&modificationDate=1565162143328&api=v2||shape="rect"]]
718 +units: ps (bigger numbers indicate later arrivaltime of the electrons)
720 720  
720 +The BAM measures the arrivaltime of FLASH 1 and FLASH2 in the same data set (thus also sorted in at /FL1/ !). The first values are for FLASH1 bunches.
721 +
721 721  \\
722 722  
724 +first bunch of FLASH2 ... how to calculate ..
725 +
723 723  \\
724 724  
725 725  \\
726 726  
727 -===== electron bunch energy =====
730 +Docu:  [[LINK to detailled 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"]] and to a recent  [[talk about the working principle of the BAM>>url:https://confluence.desy.de/download/attachments/134216957/BAM-basics_and_outlook-2018_DESY-template_16-9Format.pdf?version=1&modificationDate=1565162143328&api=v2||shape="rect"]]
728 728  
729 -{{code language="none"}}/FL1/Electron Diagnostic/Electron energy/average electron energy{{/code}}
730 -_always saved (PBD)
731 -DOOCS prop : {{code language="none"}}TTF2.DAQ/ENERGY.DOGLEG/E_INTRA_MEAN/VAL{{/code}}
732 -DAQ channel: {{code language="none"}}PBD.ENERGY.DOGLEG/E_MEAN{{/code}}
733 -desc: electron bunch energy (average over the bunch train)
734 -units: (% class="twikiNewLink" %)MeV(%%)
735 735  \\
736 736  
737 -{{code language="none"}}/FL1/Electron Diagnostic/Electron energy/pulse resolved energy{{/code}}
738 -_always saved (PBD)
739 -DOOCS prop : {{code language="none"}}TTF2.DAQ/ENERGY.DOGLEG/E_SPECT/VAL.TD{{/code}}
740 -DAQ channel: {{code language="none"}}PBD.ENERGY.DOGLEG/E_SPECT{{/code}}
741 -desc: electron bunch energy bunch resolved
742 -units: (% class="twikiNewLink" %)MeV
734 +\\
743 743  
744 744  \\
745 745  
746 -{{code language="none"}}/FL1/Electron Diagnostic/Electron energy/wavelength bunch train average{{/code}}
747 -_always saved (PBD)
748 -DOOCS prop : {{code language="none"}}TTF2.DAQ/ENERGY.DOGLEG/LAMBDA_MEAN/VAL{{/code}}
749 -DAQ channel: {{code language="none"}}PBD.ENERGY.DOGLEG/LAMBDA_MEAN{{/code}}
750 -desc: Wavelength calculated by the electron bunch energy (average over the bunch train) (FLASH1)
751 -units: nm
738 +
752 752  \\
753 753  
754 754  [[Contents>>doc:||anchor="Contents"]]