Changes for page The FLASH HDF5 structure

Last modified by sndueste on 2025/02/06 10:55
From version 14.1
edited by sndueste
on 2019/09/17 17:52
Change comment: There is no comment for this version
To version 13.1
edited by sndueste
on 2019/09/17 16:58
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, DOOCS and (raw) DAQ ==
39 +== Most popular FLASH parameters and their names in HDF5 ==
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:
... ... @@ -618,7 +618,9 @@
618 618  
619 619  \\
620 620  
621 +\\
621 621  
623 +
622 622  //always saved (PBD2)//
623 623  \\\\{{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
624 624  {{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}}
... ... @@ -676,12 +676,14 @@
676 676  
677 677  \\
678 678  
681 +\\
682 +
679 679  ==== Electron Beam properties (FLASH2) ====
680 680  
681 681  ===== bunch charge =====
682 682  
683 683  {{code language="none"}}/FL2/Electron Diagnostic/Bunch charge/after undulator{{/code}}
684 -//always saved (PBD2)//
688 +//always saved (PBD)//
685 685  DOOCS prop : {{code language="none"}}FLASH.DIAG/PBD2.TOROID.ML/9FL2BURN/CHARGE.FLASH2{{/code}}
686 686  DAQ channel: {{code language="none"}}FLASH.DIAG/PBD2.TOROID.ML/9FL2BURN/CHARGE.FLASH2{{/code}}
687 687  desc: electron bunch charge (FLASH2)
... ... @@ -689,53 +689,62 @@
689 689  
690 690  \\
691 691  
692 -===== undulator settings =====
696 +\\
693 693  
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
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 +)))
700 700  
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 -**FL1**{{code language="none"}}//Electron Diagnostic/BAM/4DBC3/electron bunch arrival time (low charge){{/code}}
714 -//always saved (PBD2)//
713 +{{code language="none"}}/FL1/Electron Diagnostic/BAM/4DBC3/electron bunch arrival time (low charge){{/code}}
714 +//always saved (PBD)//
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)
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"]]
719 719  
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 -
722 722  \\
723 723  
724 -first bunch of FLASH2 ... how to calculate ..
725 -
726 726  \\
727 727  
728 728  \\
729 729  
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"]]
727 +===== electron bunch energy =====
731 731  
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(%%)
732 732  \\
733 733  
734 -\\
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
735 735  
736 736  \\
737 737  
738 -
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
739 739  \\
740 740  
741 741  [[Contents>>doc:||anchor="Contents"]]