Changes for page The FLASH HDF5 structure

Last modified by sndueste on 2025/02/06 10:55
From version 58.1
edited by sndueste
on 2022/09/07 17:20
Change comment: There is no comment for this version
To version 59.1
edited by sndueste
on 2022/09/08 08:48
Change comment: There is no comment for this version

Summary

Details

Page properties
Content
... ... @@ -419,6 +419,7 @@
419 419  arrival time (BAM) =====
420 420  
421 421  {{info title="BAM information: updates 2022"}}
422 +* 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"]]
422 422  * The data format of the BAM has been completely altered in the 2022 shutdown
423 423  * 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 ...
424 424  * THIS is now different. there are new parameters for pulses that go to FL1 and to FL2 (in detail: first time slot of the accelerator and second)
... ... @@ -427,7 +427,6 @@
427 427  ** FL1: 1SFELC →  FL1.SFELC
428 428  ** FL2: FL2XTDS → (% style="color: rgb(23,43,77);" %)FL2.SEED5
429 429  * for more Info: [[LINK to detailed infos from MSK>>url:https://confluence.desy.de/display/SDiagPublic/BAM+Data+Structure||shape="rect"]]
430 -* [[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"]]
431 431  * [[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]]
432 432  * a recent  [[talk about the working principle of the BAM>>attach:BAM-basics and outlook-2018_DESY-template_16-9Format.pdf]]
433 433  {{/info}}
... ... @@ -500,17 +500,10 @@
500 500  //always saved (PBD)//
501 501  DOOCS prop : FLASH.SDIAG/BAM/(% style="color: rgb(23,43,77);" %)FL1.SFELC(%%)/ARRIVAL_TIM(% style="color: rgb(0,0,0);" %)E..bamStatus.//1//(%%)
502 502  DAQ channel: (% style="color: rgb(255,102,0);" %)FLASH.SDIAG/BAM/(% style="color: rgb(255, 102, 0); color: rgb(23, 43, 77)" %)FL1.SFELC(% style="color: rgb(255,102,0);" %)/ARRIVAL_TIME.BAMSTATUS(%%)
503 -desc: (% style="" %) 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
503 +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
504 504  
505 505  \\
506 506  
507 -{{info title="BAM hints"}}
508 -* besides the arrivaltime from FLASH1 there is also the FLASH2/3 electron arrival time saved.In case of doubt ask your local contact
509 -* [[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]]
510 -* [[LINK to detailed infos from MSK>>url:https://confluence.desy.de/display/SDiagPublic/BAM+Data+Structure||shape="rect"]]
511 -* a recent  [[talk about the working principle of the BAM>>attach:BAM-basics and outlook-2018_DESY-template_16-9Format.pdf]]
512 -{{/info}}
513 -
514 514  \\
515 515  
516 516  ===== electron beam profile =====
... ... @@ -966,8 +966,27 @@
966 966  The gap values are saved for all 12 undulators (Nr 3 to 14). Undulator 14 is the one closest to the experimental hall.
967 967  
968 968  =====
969 -arrival time =====
962 +arrival time (BAM) =====
970 970  
964 +{{info title="BAM information: updates 2022"}}
965 +* 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"]]
966 +* The data format of the BAM has been completely altered in the 2022 shutdown
967 +* 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 ...
968 +* THIS is now different. there are new parameters for pulses that go to FL1 and to FL2 (in detail: first time slot of the accelerator and second)
969 +* There has been also a renaming  (and relocation) of the BAMs.
970 +** acc:  4DBC3 → FL0.DBC2
971 +** FL1: 1SFELC →  FL1.SFELC
972 +** FL2: 8FL2XTDS → (% style="color: rgb(23,43,77);" %)FL2.SEED5
973 +* for more Info: [[LINK to detailed infos from MSK>>url:https://confluence.desy.de/display/SDiagPublic/BAM+Data+Structure||shape="rect"]]
974 +* [[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]]
975 +* a recent  [[talk about the working principle of the BAM>>attach:BAM-basics and outlook-2018_DESY-template_16-9Format.pdf]]
976 +{{/info}}
977 +
978 +\\
979 +
980 +{{expand title="Discontinued BAM format (used until end 2021)"}}
981 +(% style="color: rgb(0,0,0);" %)**Discontinued BAM data recording **
982 +
971 971  {{code language="none"}}/FL2/Electron Diagnostic/BAM/8FL2XTDS/electron bunch arrival time (low charge){{/code}}
972 972  //always saved (PBD2)//
973 973  DOOCS prop : {{code language="none"}}FLASH.SDIAG/BAM/8FL2XTDS/LOW_CHARGE_ARRIVAL_TIME{{/code}}
... ... @@ -992,8 +992,60 @@
992 992  * [[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"]]
993 993  * a recent  [[talk about the working principle of the BAM>>attach:BAM-basics and outlook-2018_DESY-template_16-9Format.pdf]]
994 994  {{/info}}
1007 +{{/expand}}
995 995  
1009 +(% style="color: rgb(255,102,0);" %)DBC2/electron bunch arrival time{{code language="none"}}/FL1/Electron Diagnostic/BAM/{{/code}}(%%)
1010 +//always saved (PBD)//
1011 +DOOCS prop : FLASH.SDIAG/BAM/FL0.DBC2/ARRIVAL_TIME.absolute.SA2
1012 +DAQ channel: (% style="color: rgb(255,102,0);" %)FLASH.SDIAG/BAM/FL0.DBC2/ARRIVAL_TIME.absolute.SA2(%%)
1013 +desc: Electron bunch arrival time measured with the BAM inside the accelerator (after bunch compressor 2) - It shows a very good correlation to the arrival time  of the XUV pulses in the experiment (see help).  The SA2 indicates the data is recorded for the second time slot at FLASH, typically used for FLASH2
1014 +units: fs (bigger numbers (typically) indicate later arrival times of the electrons).
996 996  
1016 +\\
1017 +
1018 +(% style="color: rgb(255,102,0);" %)DBC2/error{{code language="none"}}/FL1/Electron Diagnostic/BAM/{{/code}}(%%)
1019 +//always saved (PBD)//
1020 +DOOCS prop : FLASH.SDIAG/BAM/FL0.DBC2/ARRIVAL_TIM(% style="color: rgb(0,0,0);" %)E.bamError(%%)
1021 +DAQ channel: (% style="color: rgb(255,102,0);" %)FLASH.SDIAG/BAM/FL0.DBC2/ARRIVAL_TIME.BAMERROR(%%)
1022 +desc: If the value is 0 , the BAM is working well. If it is non-zero there is a problem !!
1023 +
1024 +\\
1025 +
1026 +(% style="color: rgb(255,102,0);" %)DBC2/error{{code language="none"}}/FL1/Electron Diagnostic/BAM/{{/code}}(%%)
1027 +//always saved (PBD)//
1028 +DOOCS prop : FLASH.SDIAG/BAM/FL0.DBC2/ARRIVAL_TIM(% style="color: rgb(0,0,0);" %)E..bamStatus.//2//(%%)
1029 +DAQ channel: (% style="color: rgb(255,102,0);" %)FLASH.SDIAG/BAM/FL0.DBC2/ARRIVAL_TIME.BAMSTATUS(%%)
1030 +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
1031 +
1032 +\\
1033 +
1034 +(% style="color: rgb(23,43,77);" %)SEED5(% style="color: rgb(255,102,0);" %)/electron bunch arrival time{{code language="none"}}/FL1/Electron Diagnostic/BAM/{{/code}}(%%)
1035 +//always saved (PBD)//
1036 +DOOCS prop : FLASH.SDIAG/BAM/(% style="color: rgb(23,43,77);" %)FL2.SEED5(%%)/ARRIVAL_TIME.absolute.SA2
1037 +DAQ channel: (% style="color: rgb(255,102,0);" %)FLASH.SDIAG/BAM/(% style="color: rgb(255, 102, 0); color: rgb(23, 43, 77)" %)FL2.SEED5(% style="color: rgb(255,102,0);" %)/ARRIVAL_TIME.absolute.SA2(%%)
1038 +desc: Electron bunch arrival time measured  with the BAM  before the undulator (pulse resolved data). This one was newly installed in 2020.  The SA2 indicates the data is recorded for the first time slot at FLASH, typically used for FLASH2
1039 +units: fs (bigger numbers (typically) indicate later arrival times of the electrons).
1040 +
1041 +\\
1042 +
1043 +(% style="color: rgb(23,43,77);" %)SEED5(% style="color: rgb(255,102,0);" %)/error{{code language="none"}}/FL1/Electron Diagnostic/BAM/{{/code}}(%%)
1044 +//always saved (PBD)//
1045 +DOOCS prop : FLASH.SDIAG/BAM/(% style="color: rgb(23,43,77);" %)FL2.SEED5(%%)/ARRIVAL_TIM(% style="color: rgb(0,0,0);" %)E.bamError(%%)
1046 +DAQ channel: (% style="color: rgb(255,102,0);" %)FLASH.SDIAG/BAM/(% style="color: rgb(255, 102, 0); color: rgb(23, 43, 77)" %)FL2.SEED5(% style="color: rgb(255,102,0);" %)/ARRIVAL_TIME.BAMERROR(%%)
1047 +desc: If the value is 0 , the BAM is working well. If it is non-zero there is a problem !!
1048 +
1049 +\\
1050 +
1051 +(% style="color: rgb(23,43,77);" %)SEED5(% style="color: rgb(255,102,0);" %)/error{{code language="none"}}/FL1/Electron Diagnostic/BAM/{{/code}}(%%)
1052 +//always saved (PBD)//
1053 +DOOCS prop : FLASH.SDIAG/BAM/(% style="color: rgb(23,43,77);" %)FL2.SEED5(%%)/ARRIVAL_TIM(% style="color: rgb(0,0,0);" %)E..bamStatus.//2//(%%)
1054 +DAQ channel: (% style="color: rgb(255,102,0);" %)FLASH.SDIAG/BAM/(% style="color: rgb(255, 102, 0); color: rgb(23, 43, 77)" %)FL2.SEED5(% style="color: rgb(255,102,0);" %)/ARRIVAL_TIME.BAMSTATUS(%%)
1055 +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
1056 +
1057 +\\
1058 +
1059 +\\
1060 +
997 997  [[Contents>>doc:||anchor="Contents"]]
998 998  
999 999  \\