Changes for page The FLASH HDF5 structure

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... ... @@ -8,9 +8,9 @@
8 8  
9 9  == General information about HDF5 ==
10 10  
11 -HDF5 is a data format maintained by the HDF group. For detailed general information see [[here~[~[image:url:http://hasfweb.desy.de/pub/TWiki/TWikiDocGraphics/external-link.gif~|~|width="13" height="12"~]~]>>url:https://portal.hdfgroup.org/display/support||shape="rect"]]
11 +HDF5 is a data format maintained by the HDF group. For detailed general information see [[here~[~[image:url:http://hasfweb.desy.de/pub/TWiki/TWikiDocGraphics/external-link.gif~|~|width="13" height="12"~]~]>>url:https://www.hdfgroup.org/HDF5/||shape="rect"]]
12 12  
13 -To download the HDF5 Viewer click [[here~[~[image:url:http://hasfweb.desy.de/pub/TWiki/TWikiDocGraphics/external-link.gif~|~|width="13" height="12"~]~]>>url:https://portal.hdfgroup.org/display/support/Download+HDFView||shape="rect"]]
13 +To download the HDF5 Viewer click [[here~[~[image:url:http://hasfweb.desy.de/pub/TWiki/TWikiDocGraphics/external-link.gif~|~|width="13" height="12"~]~]>>url:https://support.hdfgroup.org/products/java/hdfview/index.html||shape="rect"]]
14 14  
15 15  For use on the DESY Maxwell or PAL (max-fsc or pal) **hdfview** is available in the xray module :
16 16  {{code language="none"}}> module load xray{{/code}}
... ... @@ -18,9 +18,9 @@
18 18  
19 19  [[Contents>>doc:||anchor="Contents"]]
20 20  
21 -== The current FLASH HDF5 structure ==
21 +== FLASH HDF5 structure ==
22 22  
23 -The photon diagnostic, electron diagnostic and beamline information as well as the information about the pump-probe laser and the infrastructure offered for users (GHz/MHz ADCs) can be included in one HDF5 file which is organized according to train IDs. The general structure is:
23 +The photon diagnostic, electron diagnostic and beamline information as well as the information about the pump-probe laser and the infrastructure offered for users (GHz/MHz ADCs) can be included in one HDF5 file which is organised according to train IDs. The general structure is:
24 24  
25 25  * Electron Diagnostic
26 26  * Photon Diagnostics
... ... @@ -27,16 +27,16 @@
27 27  * Beamlines
28 28  * Experiment
29 29  * Timing
30 -[[image:attach:HDF5_structure.jpg||height="400"]]
30 +[[~[~[image:url:http://hasfweb.desy.de/pub/Setup/HDF5main/HDF5_structure.jpg~|~|alt="HDF5_structure.jpg" width="700" height="500"~]~]>>attach:HDF5_structure.jpg]]
31 31  
32 -A detailed description of (most) channels can be found in the lower part of the hdf5 viewer:
33 -[[image:attach:HDF5_structure_desc.jpg||thumbnail="true" height="250"]]
32 +A detailled description of (most) channels can be found in the lower part of the hdf5 viewer:
33 +[[~[~[image:url:http://hasfweb.desy.de/pub/Setup/HDF5main/HDF5_structure_desc.jpg~|~|alt="HDF5_structure_desc.jpg" width="341" height="413"~]~]>>attach:HDF5_structure_desc.jpg]]
34 34  
35 35  [[Contents>>doc:||anchor="Contents"]]
36 36  
37 37  \\
38 38  
39 -=== HDF5 example files ===
39 +== HDF5 example files ==
40 40  
41 41  Here we have a few HDF5 samples (User data combined with Photon diagnostics data) from a few beamtimes showing the different kind options.
42 42  
... ... @@ -54,18 +54,10 @@
54 54  
55 55  \\
56 56  
57 -== The new (starting 2021) HDF5 format ==
58 -
59 -Here is [[some documentation on the changes of the HDF5 format>>doc:FLASHUSER.HDF5 format]] that well be available in 2021 (work in progress)
60 -
61 61  \\
62 62  
63 -\\
59 +== Most popular FLASH parameters and their names in HDF5, DOOCS and (raw) DAQ ==
64 64  
65 -== Most popular FLASH parameters and their names in HDF5, DOOCS and (raw) DAQ ==
66 -
67 -{{id name="DOOCSparameters"/}}
68 -
69 69  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"]].
70 70  The most common and often used ones are summarized below:
71 71  
... ... @@ -145,29 +145,23 @@
145 145  \\
146 146  
147 147  
148 -NOTE: Aperture positions in the beamline as well as the positions of the beam steering mirrors are also saved. For more Info contact your local contact
140 +NOTE: Aperture positions in the beamline as well as the positions of the beam steering mirrors are also saved. for more Info contact your local contact
149 149  
150 150  [[Contents>>doc:||anchor="Contents"]]
151 151  
152 152  \\
153 153  
154 -==== Photon Diagnostics SASE ([[GMD>>url:http://photon-science.desy.de/facilities/flash/photon_diagnostics/gmd_intensity_and_position/index_eng.html||shape="rect"]]) ====
146 +==== Photon Diagnostics SASE ([[GMD>>url:http://photon-science.desy.de/facilities/flash/photon_diagnostics/gmd_intensity_and_position/index_eng.html||shape="rect"]]) / Spectrometer (FLASH1) ====
155 155  
156 -\\
157 -
158 -(% style="color: rgb(0,0,0);" %)**Discontinued GMD data recording / evaluation  (VME + PhotonFlux ML server)**
159 -
160 160  {{code language="none"}}/FL1/Photon Diagnostic/GMD/Average energy/energy tunnel{{/code}}
161 -//always saved (PBD)//\\
162 -
163 -(% style="color: rgb(0,0,0);" %)DOOCS prop : {{code language="none"}}TTF2.DAQ/PHFLUX/OUT04/VAL{{/code}} (%%)
164 -(% style="color: rgb(0,0,0);" %)DAQ channel: {{code language="none"}}PBD.PHFLUX/TUNNEL.ENPULSEIC{{/code}}(%%)
165 -desc : calibrated average SASE Energy/pulse measured in the TUNNEL upstream the gas attenuator (ion current)
149 +//always saved (PBD)//
150 +DOOCS prop : {{code language="none"}}TTF2.DAQ/PHFLUX/OUT04/VAL{{/code}}
151 +DAQ channel: {{code language="none"}}PBD.PHFLUX/TUNNEL.ENPULSEIC{{/code}}
152 +desc : calibrated average SASE Energy/pulse measured in the TUNNEL before the attenuator (ion current)
166 166  units : microJ
167 167  
168 168  {{code language="none"}}/FL1/Photon Diagnostic/GMD/Pulse resolved energy/energy tunnel{{/code}}
169 -//always saved (PBD)//
170 -
156 +//always saved (PBD)//
171 171  DOOCS prop : {{code language="none"}}TTF2.DAQ/PHFLUX/OUT34/VAL{{/code}}
172 172  DAQ channel: {{code language="none"}}PBD.PHFLUX/TUNNEL.ENERGYPULSE.USER{{/code}}
173 173  desc :Energy per pulse Tunnel (from e-) - the values are set to "0" if there was no SASE beam in the FEL
... ... @@ -181,8 +181,7 @@
181 181  units : a.u. (more or less µJ but need to be calibrated with the "Average energy" for good precision) **[[see here for help>>doc:FLASHUSER.jddd-linked help pages.Calibrating the pulse resolved (electron) data from GMD.WebHome]]**
182 182  
183 183  {{code language="none"}}/FL1/Photon Diagnostic/GMD/Average energy/energy BDA{{/code}}
184 -//always saved (PBD)//
185 -
170 +//always saved (PBD)//
186 186  DOOCS prop : {{code language="none"}}TTF2.DAQ/PHFLUX/OUT05/VAL{{/code}}
187 187  DAQ channel: {{code language="none"}}PBD.PHFLUX/BDA.ENPULSEIC{{/code}}
188 188  desc : calibrated average SASE Energy/pulse measured in the BDA (in the experimental hall) after the attenuator (ion current)
... ... @@ -189,8 +189,7 @@
189 189  units : microJ
190 190  
191 191  {{code language="none"}}/FL1/Photon Diagnostic/GMD/Pulse resolved energy/energy BDA{{/code}}
192 -//always saved (PBD)//
193 -
177 +//always saved (PBD)//
194 194  DOOCS prop : {{code language="none"}}TTF2.DAQ/PHFLUX/OUT35/VAL{{/code}}
195 195  DAQ channel: {{code language="none"}}PBD.PHFLUX/BDA.ENERGYPULSE.USER{{/code}}
196 196  desc :Energy per pulse BDA (from e-) - the values are set to "0" if there was no SASE beam in the FEL
... ... @@ -203,57 +203,6 @@
203 203  desc :Energy per pulse BDA (from e-) - uncorrected values. There are also values saved if there was no beam ... just background noise
204 204  units : a.u. (more or less µJ but need to be calibrated with the "Average energy" for good precision)** [[see here for help>>doc:FLASHUSER.jddd-linked help pages.Calibrating the pulse resolved (electron) data from GMD.WebHome]]**
205 205  
206 -\\
207 -
208 -(% style="color: rgb(0,0,0);" %)**NEW (2021) GMD data recording / evaluation  (MTCA, analog to FLASH2 and XFEL)**
209 -
210 -{{code language="none"}}/FL1/Photon Diagnostic/GMD/Average energy/energy tunnel{{/code}}
211 -//always saved (PBD)//
212 -(% style="color: rgb(0,0,0);" %)DOOCS prop : {{code language="none"}}FLASH.FEL/XGM.PHOTONFLUX/FL1.TUNNEL/PHOTONFLUX.UJ{{/code}} (%%)
213 -(% style="color: rgb(0,0,0);" %)DAQ channel: {{code language="none"}}FLASH.FEL/XGM.PHOTONFLUX/FL1.TUNNEL/PHOTONFLUX.UJ{{/code}}
214 -
215 -desc : calibrated average SASE Energy/pulse measured in the TUNNEL upstream the gas attenuator
216 -units : microJ
217 -
218 -\\
219 -
220 -{{code language="none"}}/FL1/Photon Diagnostic/GMD/Pulse resolved energy/energy tunnel{{/code}}
221 -//always saved (PBD)//
222 -
223 -(% style="color: rgb(0,0,0);" %)DOOCS prop : 
224 -{{code language="none"}}FLASH.FEL/XGM.INTENSITY/FL1.TUNNEL/INTENSITY.TD{{/code}}DAQ channel: {{code language="none"}}FLASH.FEL/XGM.INTENSITY/FL1.TUNNEL/INTENSITY.TD{{/code}}
225 -
226 -desc : Energy per pulse measured in the Tunnel.  In addition measurement errors and beam position are included for EACH pulse in the pulse train  !! (see below)
227 -units : a.u. (more or less µJ but need to be calibrated with the "Average energy" for good precision)** [[see here for help>>doc:FLASHUSER.jddd-linked help pages.Calibrating the pulse resolved (electron) data from GMD.WebHome]]**
228 -
229 -{{info title="GMD pulse resolved data structure"}}
230 -For every pulse in the pulse train the information is saved:
231 -
232 -
233 -1. **Intensity per pulse** (a.u. (more or less µJ ))
234 -1. Intensity per pulse (auxillary GMD) - not used
235 -1. Position horizontal (mm, for a single pulse the position information may be very noisy  - talk to your local contact)
236 -1. Position vertical (mm, for a single pulse the position information may be very noisy  - talk to your local contact)
237 -1. **Intensity per pulse sigma** (a.u. (more or less µJ ), (% style="color: rgb(0,0,0);" %)This parameter gives an indication of the error of the measurement of the pulse energy. This takes signal to noise,  detector resolution, uncertainties in crossection etc into account. (it is NOT the measurement of the statistical fluctuation of the SASE pulses)(%%))
238 -1. Position horizontal sigma  (mm, indicates the error (RMS, sigma) of the measurement according to known uncertainties and signal to noise)
239 -1. Position vertical sigma  (mm, indicates the error (RMS, sigma) of the measurement according to known uncertainties and signal to noise)
240 -1. Combined warning and error flags
241 -
242 -The pulse energy and the error are plotted for the first bunch of the pulse trains saved in this 
243 -file
244 -
245 -
246 -[[image:attach:image2021-2-9_10-51-6.png||height="250"]]
247 -
248 -\\
249 -{{/info}}
250 -
251 -All values for the GMD are also available for the** BDA GMD **which is located in the experimental hall down stream the gas attenuator. If the attenuator is on the ratio between BDA and Tunnel signal shows the attenuation. **BUT NOTE** that the filter units  are downstream the GMD. So if filters  are used this influence is NOT measured by the GMD BDA !
252 -
253 -\\
254 -
255 -Besides  pulse energy the GMD also provides information about the beam position
256 -
257 257  {{code language="none"}}/FL1/Photon Diagnostic/GMD/Beam position/position BDA horizontal{{/code}}
258 258  //always saved (PBD)//
259 259  DOOCS prop : {{code language="none"}}FLASH.FEL/XGM.POSMON/FL1.BDA/IX.POS{{/code}}
... ... @@ -282,10 +282,6 @@
282 282  desc :Beam position of the photon Beam determined by the GMD (TUNNEL, y=vertical)
283 283  units : mm
284 284  
285 -\\
286 -
287 -==== Spectrometer (FLASH1) ====
288 -
289 289  {{code language="none"}}/FL1/Photon Diagnostic/Wavelength/Tunnelspectrometer/wavelength{{/code}}
290 290  _always saved (when Spectrum is measured !!) (PBD) _
291 291  DOOCS prop : {{code language="none"}}TTF2.EXP/PHOTONWL.ML/WAVE_LENGTH/VAL.TD{{/code}}
... ... @@ -369,25 +369,10 @@
369 369  //always saved (PBD)//
370 370  DOOCS prop : {{code language="none"}}FLASH.SDIAG/BAM/4DBC3/LOW_CHARGE_ARRIVAL_TIME{{/code}}
371 371  DAQ channel: {{code language="none"}}FLASH.SDIAG/BAM.DAQ/4DBC3.LOW_CHARGE_ARRIVAL_TIME{{/code}}
372 -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).
373 -units: ps (bigger numbers indicate later arrivaltime of the electrons)
301 +desc: Electron bunch arrival time measured with the BAM (more or less) before the undulator (pulse resolved data)
302 +units: ps (bigger numbers indicate later arrivaltime of the electrons)
303 +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>>attach:BAM-basics and outlook-2018_DESY-template_16-9Format.pdf]]
374 374  
375 -{{code language="none"}}/FL1/Electron Diagnostic/BAM/1SFELC/electron bunch arrival time (low charge){{/code}}
376 -//always saved (PBD)//
377 -DOOCS prop : {{code language="none"}}FLASH.SDIAG/BAM/1SFELC/LOW_CHARGE_ARRIVAL_TIME{{/code}}
378 -DAQ channel: {{code language="none"}}FLASH.SDIAG/BAM.DAQ/1SFELC.LOW_CHARGE_ARRIVAL_TIME{{/code}}
379 -desc: Electron bunch arrival time measured with the BAM  before the undulator (pulse resolved data). This one was newly installed in 2020.
380 -units: ps (bigger numbers indicate later arrivaltime of the electrons)
381 -
382 -{{info title="BAM hints"}}
383 -* besides the arrivaltime from FLASH1 there is also the FLASH2/3 electron arrival time saved.In case of doubt ask your local contact
384 -* [[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]]
385 -* [[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"]]
386 -* a recent  [[talk about the working principle of the BAM>>attach:BAM-basics and outlook-2018_DESY-template_16-9Format.pdf]]
387 -{{/info}}
388 -
389 -\\
390 -
391 391  ===== electron beam profile =====
392 392  
393 393  {{code language="none"}}/FL1/Electron Diagnostic/Electron bunch profile/TDS profile{{/code}}
... ... @@ -677,37 +677,40 @@
677 677  
678 678  \\
679 679  
594 +(% style="color: rgb(255,204,0);" %)average Sigma    to be included in
595 +
596 +(% style="color: rgb(193,199,208);" %){{code language="none"}}/FL2/Photon Diagnostic/GMD/Average energy/energy tunnel uncertainty{{/code}} (%%)
597 +(% style="color: rgb(193,199,208);" %)//always saved (PBD2)// (%%)
598 +(% style="color: rgb(193,199,208);" %)DOOCS prop : FLASH.FEL/XGM.PHOTONFLUX/FL2.TUNNEL/PHOTONFLUX.UJ.SIGMA (%%)
599 +(% style="color: rgb(193,199,208);" %)DAQ channel: FLASH.FEL/XGM.PHOTONFLUX/FL2.TUNNEL/PHOTONFLUX.UJ.SIGMA (%%)
600 +(% style="color: rgb(193,199,208);" %)desc :  This parameter gives an indication of the error of the measurement of the average pulse energy. This takes signal to noise,  detector resolution, uncertainties in crossection etc into account. (it is NOT the measurement of the statistical fluctuation of the SASE pulses)(%%)
601 +(% style="color: rgb(193,199,208);" %)units : microJ
602 +
603 +\\
604 +
605 +\\
606 +
680 680  {{code language="none"}}/FL2/Photon Diagnostic/GMD/Pulse resolved energy/energy tunnel{{/code}}
681 681  //always saved (PBD2)//
682 682  DOOCS prop : {{code language="none"}}FLASH.FEL/XGM.INTENSITY/FL2.TUNNEL/INTENSITY.TD{{/code}}
683 683  DAQ channel: {{code language="none"}}FLASH.FEL/XGM.INTENSITY/FL2.TUNNEL/INTENSITY.TD{{/code}}
684 -desc : Energy per pulse measured in the Tunnel  (in front of the gas attenuator and the apertures in the Hall) In addition measurement errors and beam position are included for EACH pulse in the pulse train  !! (see below)
611 +desc : Energy per pulse measured in the Tunnel  (in fromt of the gas attenuator and the apertures in the Hall)
685 685  units : a.u. (more or less µJ but need to be calibrated with the "Average energy" for good precision)** [[see here for help>>doc:FLASHUSER.jddd-linked help pages.Calibrating the pulse resolved (electron) data from GMD.WebHome]]**
686 686  
687 -{{info title="GMD pulse resolved data structure"}}
688 -For every pulse in the pulse train the information is saved:
689 -
614 +\\
690 690  
691 -1. **Intensity per pulse** (a.u. (more or less µJ ))
692 -1. Intensity per pulse (auxillary GMD) - not used
693 -1. Position horizontal (mm, for a single pulse the position information may be very noisy  - talk to your local contact)
694 -1. Position vertical (mm, for a single pulse the position information may be very noisy  - talk to your local contact)
695 -1. **Intensity per pulse sigma** (a.u. (more or less µJ ), (% style="color: rgb(0,0,0);" %)This parameter gives an indication of the error of the measurement of the pulse energy. This takes signal to noise,  detector resolution, uncertainties in crossection etc into account. (it is NOT the measurement of the statistical fluctuation of the SASE pulses)(%%))
696 -1. Position horizontal sigma  (mm, indicates the error (RMS, sigma) of the measurement according to known uncertainties and signal to noise)
697 -1. Position vertical sigma  (mm, indicates the error (RMS, sigma) of the measurement according to known uncertainties and signal to noise)
698 -1. Combined warning and error flags
616 +\\
699 699  
700 -The pulse energy and the error are plotted for the first bunch of the pulse trains saved in this 
701 -file
618 +{{code language="none"}}/FL2/Photon Diagnostic/GMD/Pulse resolved energy/energy tunnel uncertainty (sigma){{/code}}
619 +//always saved (PBD2)//
620 +DOOCS prop : {{code language="none"}}FLASH.FEL/XGM.INTENSITY/FL2.TUNNEL/INTENSITY.SIGMA.TD{{/code}}
621 +DAQ channel: {{code language="none"}}FLASH.FEL/XGM.INTENSITY/FL2.TUNNEL:4{{/code}}
622 +desc :(% style="color: rgb(0,0,0);" %)This parameter gives an indication of the error of the measurement of the pulse energy. This takes signal to noise,  detector resolution, uncertainties in crossection etc into account. (it is NOT the measurement of the statistical fluctuation of the SASE pulses)(%%)
623 +units : a.u. (more or less µJ - related to the value of the pulse energy )
702 702  
703 -
704 -[[image:attach:image2021-2-9_10-51-6.png||height="250"]]
705 705  
706 -\\
707 -{{/info}}
626 +{{code language="none"}}{{/code}}
708 708  
709 -\\
710 -
711 711  All values for the GMD are also available for the** HALL GMD **which is located in the experimental hall down stream the gas attenuator. If the attenuator is on the ratio between Hall and Tunnel signal shows the attenuation. **BUT NOTE** that the filter unit and the Aperture 4 are downstream the GMD. So if filters and aperture are used this influence is NOT measured by the GMD hall !
712 712  
713 713  \\
... ... @@ -826,30 +826,17 @@
826 826  =====
827 827  arrival time =====
828 828  
829 -{{code language="none"}}/FL2/Electron Diagnostic/BAM/8FL2XTDS/electron bunch arrival time (low charge){{/code}}
830 -//always saved (PBD2)//
831 -DOOCS prop : {{code language="none"}}FLASH.SDIAG/BAM/8FL2XTDS/LOW_CHARGE_ARRIVAL_TIME{{/code}}
832 -DAQ channel: {{code language="none"}}FLASH.SDIAG/BAM.DAQ/8FL2XTDS.LOW_CHARGE_ARRIVAL_TIME{{/code}}
833 -desc: Electron bunch arrival time measured with the BAM after the FLASH2 undulator (pulse resolved data)
834 -units: ps (bigger numbers indicate later arrivaltime of the electrons)
835 -
836 836  **FL1**{{code language="none"}}//Electron Diagnostic/BAM/4DBC3/electron bunch arrival time (low charge){{/code}}
837 837  //always saved (PBD2)//
838 838  DOOCS prop : {{code language="none"}}FLASH.SDIAG/BAM/4DBC3/LOW_CHARGE_ARRIVAL_TIME{{/code}}
839 839  DAQ channel: {{code language="none"}}FLASH.SDIAG/BAM.DAQ/4DBC3.LOW_CHARGE_ARRIVAL_TIME{{/code}}
840 -desc: Electron bunch arrival time measured with the BAM  in the accelerator  (pulse resolved data)
750 +desc: Electron bunch arrival time measured with the BAM (more or less) before the undulator (pulse resolved data)
841 841  units: ps (bigger numbers indicate later arrivaltime of the electrons)
842 842  
843 -\\
753 +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.
754 +After a gap of about 70 micros ( 70 colums)  with  as entry for the switching between FLASH 1 and 2 the values for the electrons used in FLASH2 start.  The start time of FLASH2 is also recorded in the DAQ. FLASH1 start time is for historic reasons 700. thus if e.g. the start time of FLASH2 ( property name see below) is 1200 it means that FLASH starts at column 500 (1200-700) ...
844 844  
845 -{{info title="BAM hints"}}
846 -* The BAM 4DBC3 measures the arrivaltime of** FLASH 1 and FLASH2** in the same data set (thus also sorted in at /FL1/ !).
847 -* The BAM 8FL2XTDS measures only for FLASH2 BUT has the same data structure as the other BAMS ... thus there are also (random) values in in the  FLASH1 time slot 
848 -** Structure: The first values are for FLASH1 bunches. After a gap of about 70 micros ( 70 colums)  with  as entry for the switching between FLASH 1 and 2 the values for the electrons used in FLASH2 start.  The start time of FLASH2 is also recorded in the DAQ. FLASH1 start time is for historic reasons 700. thus if e.g. the start time of FLASH2 ( property name see below) is 1200 it means that FLASH starts at column 500 (1200-700) ... .In case of doubt ask your local contact
849 -* [[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]]
850 -* [[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"]]
851 -* a recent  [[talk about the working principle of the BAM>>attach:BAM-basics and outlook-2018_DESY-template_16-9Format.pdf]]
852 -{{/info}}
756 +Docu for BAM:  [[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>>attach:BAM-basics and outlook-2018_DESY-template_16-9Format.pdf]]
853 853  
854 854  
855 855  [[Contents>>doc:||anchor="Contents"]]
... ... @@ -1194,6 +1194,10 @@
1194 1194  
1195 1195  [[Contents>>doc:||anchor="Contents"]]
1196 1196  
1101 +=== How to read HDF5 with Python via FLASHH5 ===
1102 +
1103 +With [[FlashH5>>doc:FLASHUSER.FLASHH5 for easier access of FLASH's HDF5 files]] we provide h5py based examples to access and evaluate FLASH's HDF5 files.
1104 +
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1199 1199  == HDF5 and DOOCS ==