Changes for page The FLASH HDF5 structure

Last modified by sndueste on 2025/02/06 10:55
From version 54.1
edited by sndueste
on 2022/01/14 09:44
Change comment: There is no comment for this version
To version 57.1
edited by sndueste
on 2022/09/07 09:50
Change comment: There is no comment for this version

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... ... @@ -206,9 +206,7 @@
206 206  
207 207  ==== Photon Diagnostics SASE ([[GMD>>url:http://photon-science.desy.de/facilities/flash/photon_diagnostics/gmd_intensity_and_position/index_eng.html||shape="rect"]]) ====
208 208  
209 -\\
210 -
211 -{{expand title="GMD format untill 2021"}}
209 +{{expand title="Discontinued GMD format (used until 2021)"}}
212 212  (% style="color: rgb(0,0,0);" %)**Discontinued GMD data recording / evaluation  (VME + PhotonFlux ML server)**
213 213  
214 214  {{code language="none"}}/FL1/Photon Diagnostic/GMD/Average energy/energy tunnel{{/code}}
... ... @@ -260,10 +260,8 @@
260 260  
261 261  \\
262 262  
263 -\\
261 +(% style="letter-spacing: 0px; color: rgb(0, 0, 0)" %)**NEW (since 2021) GMD data recording / evaluation  (same format as FLASH2 and XFEL)**
264 264  
265 -(% style="color: rgb(0,0,0);" %)**NEW (2021) GMD data recording / evaluation  (MTCA, analog to FLASH2 and XFEL)**
266 -
267 267  {{code language="none"}}/FL1/Photon Diagnostic/GMD/Average energy/energy tunnel{{/code}}
268 268  //always saved (PBD)//
269 269  (% style="color: rgb(0,0,0);" %)DOOCS prop : {{code language="none"}}FLASH.FEL/XGM.PHOTONFLUX/FL1.TUNNEL/PHOTONFLUX.UJ{{/code}} (%%)
... ... @@ -420,8 +420,26 @@
420 420  units: nC
421 421  
422 422  =====
423 -arrival time =====
419 +arrival time (BAM) =====
424 424  
421 +{{info title="BAM information: updates 2022"}}
422 +* The data format of the BAM has been completely altered in the 2022 shutdown
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 +* 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)
425 +* There has been also a renaming  (and relocation) of the BAMs.
426 +** acc:  4DBC3 → FL0.DBC2
427 +** FL1: 1SFELC →  FL1.SFELC
428 +** FL2: FL2XTDS → (% style="color: rgb(23,43,77);" %)FL2.SEED5
429 +* for more Info: [[LINK to detailed infos from MSK>>url:https://confluence.desy.de/display/SDiagPublic/BAM+Data+Structure||shape="rect"]]
430 +* [[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]]
431 +* a recent  [[talk about the working principle of the BAM>>attach:BAM-basics and outlook-2018_DESY-template_16-9Format.pdf]]
432 +{{/info}}
433 +
434 +\\
435 +
436 +{{expand title="Discontinued BAM format (used until end 2021)"}}
437 +(% style="color: rgb(0,0,0);" %)**Discontinued BAM data recording **
438 +
425 425  {{code language="none"}}/FL1/Electron Diagnostic/BAM/4DBC3/electron bunch arrival time (low charge){{/code}}
426 426  //always saved (PBD)//
427 427  DOOCS prop : {{code language="none"}}FLASH.SDIAG/BAM/4DBC3/LOW_CHARGE_ARRIVAL_TIME{{/code}}
... ... @@ -435,11 +435,30 @@
435 435  DAQ channel: {{code language="none"}}FLASH.SDIAG/BAM.DAQ/1SFELC.LOW_CHARGE_ARRIVAL_TIME{{/code}}
436 436  desc: Electron bunch arrival time measured with the BAM  before the undulator (pulse resolved data). This one was newly installed in 2020.
437 437  units: ps (bigger numbers indicate later arrivaltime of the electrons)
452 +{{/expand}}
438 438  
454 +\\
455 +
456 +{{code language="none"}}/FL1/Electron Diagnostic/BAM/4DBC3/electron bunch arrival time (low charge){{/code}}
457 +//always saved (PBD)//
458 +DOOCS prop : {{code language="none"}}FLASH.SDIAG/BAM/4DBC3/LOW_CHARGE_ARRIVAL_TIME{{/code}}
459 +DAQ channel: {{code language="none"}}FLASH.SDIAG/BAM.DAQ/4DBC3.LOW_CHARGE_ARRIVAL_TIME{{/code}}
460 +desc: Electron bunch arrival time measured with the BAM inside the accelerator - however shows a very good correlation to the arrivaltime  of the XUV pulses in the experiment (pulse resolved data).
461 +units: ps (bigger numbers indicate later arrivaltime of the electrons)
462 +
463 +{{code language="none"}}/FL1/Electron Diagnostic/BAM/1SFELC/electron bunch arrival time (low charge){{/code}}
464 +//always saved (PBD)//
465 +DOOCS prop : {{code language="none"}}FLASH.SDIAG/BAM/1SFELC/LOW_CHARGE_ARRIVAL_TIME{{/code}}
466 +DAQ channel: {{code language="none"}}FLASH.SDIAG/BAM.DAQ/1SFELC.LOW_CHARGE_ARRIVAL_TIME{{/code}}
467 +desc: Electron bunch arrival time measured with the BAM  before the undulator (pulse resolved data). This one was newly installed in 2020.
468 +units: ps (bigger numbers indicate later arrivaltime of the electrons)
469 +
470 +\\
471 +
439 439  {{info title="BAM hints"}}
440 440  * besides the arrivaltime from FLASH1 there is also the FLASH2/3 electron arrival time saved.In case of doubt ask your local contact
441 441  * [[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]]
442 -* [[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"]]
475 +* [[LINK to detailed infos from MSK>>url:https://confluence.desy.de/display/SDiagPublic/BAM+Data+Structure||shape="rect"]]
443 443  * a recent  [[talk about the working principle of the BAM>>attach:BAM-basics and outlook-2018_DESY-template_16-9Format.pdf]]
444 444  {{/info}}
445 445