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Last modified by sndueste on 2025-09-08 15:36
From version 15.1
edited by sndueste
on 2020-01-17 09:21
Change comment: There is no comment for this version
To version 11.1
edited by sndueste
on 2019-10-24 09:30
Change comment: There is no comment for this version

Summary

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98 98  
99 99  * The FLASH DAQ system records the data in binary " {{code language="none"}}.raw{{/code}} " files.
100 100  ** [[reading the data via Matlab >>doc:FLASHUSER.Data Acquisition and controls.Data Access at FLASH (DAQ, gpfs,\.\.\.).Offline data analysis (DAQ).For experts\: many ways to get Data from the DAQ.How to Access the DAQ Using Matlab.WebHome]] works not for all data types equally well and needs precise knowledge of the desired Parameters (useful to have a quick look / preliminary analysis on few parameters).
101 +** Examples how to read from {{code language="none"}}.raw{{/code}} files can also be found in [[the user code collection>>doc:FLASH.Collection of user codes]]
101 101  ** Note that the raw data is only accessible from certain computers within the DESY network and thus not very handy for offline analysis later on ...
102 102  
103 103  \\
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115 115  * /asap3/flash/gpfs/ //beamline used// / //year// /data/ //Beamtime application number// /raw/hdf/ (the //Beamtime application number// can be fund in the pdf schedule sent around by Rolf ...)
116 116  * as example: {{code language="none"}}/asap3/flash/gpfs/bl2/2017/data/11003163/raw/hdf/{{/code}}
117 117  
118 -More details and links can be found in the [[doc:FLASHUSER.Data Acquisition and controls.DAQ and controls overview.WebHome]].
119 +More details and links can be found in the [[doc:FLASHUSER.User overview]].
119 119  
120 120  \\
121 121  
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236 236  Few things to consider (in case of doubt talk to the expert (Erland ...)):
237 237  
238 238  * 1000 MB: This is the standard setting which is best for archiving (few large files are preferred). However mainly for images that are saved with less than 10 Hz the HDF5 converter has problems with the large files. And for low data rates it may take upto half an hour to fill one 1GB file. Then smaller ones are also preferable.
239 -* 350 MB: Often a good compromise ...
240 -* 100 MB: It is not preferred to have many "small" files for storing the data. For very small data rates this is an option to not wait too long till the next file is created.
241 241  
242 -To choose the desired filesize one has to choose a run mode configuration in the RunControlGUI
241 +Basically it is
243 243  
244 -[[image:url:http://confluence.desy.de/plugins/servlet/confluence/placeholder/unknown-attachment?locale=en_US&version=2||title="image2019-10-24_15-29-36.png"]]
245 -
246 -This will however the clear the definition of selected subsystems and one has to reload the whitelist of the experiment again:
247 -
248 -[[image:url:http://confluence.desy.de/plugins/servlet/confluence/placeholder/unknown-attachment?locale=en_US&version=2||thumbnail="true" title="image2019-10-24_15-32-5.png"]]
249 -
250 250  \\
251 251  
252 -\\
253 -
254 -\\
255 -
256 256  === Assigning the DAQ to the beamline in jddd ===
257 257  
258 258  To assign which DAQ is used at what beamline one has to use the dropdown menu in the {{code language="none"}}parameter monitor{{/code}}. In each Beamline overview tab (BL1,2,3) there is a button (upper right) that starts the {{code language="none"}}parameter monitor{{/code}} panel. In the upper middle is a DAQ field in which the appropriate DAQ can be assigned to the Beamline.
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364 364  \\
365 365  
366 366  *
367 -** one has to go to the "Run Modes" tab and select the run mode {{code language="none"}}FLASH1_EXP{{/code}} by clicking on it and choose the desired file size (stored settings)
368 -[[image:url:http://confluence.desy.de/plugins/servlet/confluence/placeholder/unknown-attachment?locale=en_US&version=2||title="image2019-10-24_15-29-36.png"]]
369 -** then one has to go back to the {{code language="none"}}Subsystems{{/code}} . initially all subsystems are included.
356 +** one has to go to the "Run Modes" tab and select the run mode {{code language="none"}}FLASH1_EXP{{/code}} by clicking on it !
357 +[[~[~[image:url:http://hasfweb.desy.de/pub/Setup/DAQjddd/runmode_set.jpg~|~|alt="runmode_set.jpg" width="400" height="400"~]~]>>attach:runmode_set.jpg]]
358 +** then one has to go back to the {{code language="none"}}Subsystems{{/code}} . now all subsystems are included.
370 370  ** finally you have to select your White list and start a run ...
371 371  
372 372  \\
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383 383  
384 384  [[Some more details for experts ...>>doc:FLASH.Collection of Detailsof the DAQ from various times \.\.\. not for public use]]
385 385  
386 -=== Re-read the data base ===
387 -
388 -If there are new Properties included by Vladimir et al one has to reread the data base.
389 -
390 -This can be done easiest by going to the run modes and choose a different "stored setting" (changing e.g. from filesize 100 MB to 350 MB) and going back to subsystems. At this point the new database entries are read in. then one can do the same backwards to switch back to the initial file size. Doing this the configured list of subsystems is lost and one has to reload the whitelist and start a run to get the loaded whitelist in the configuration.
391 -
392 392  \\
393 393  
394 -OR one can do the hard way:
377 +=== Re-read the data base ===
395 395  
396 396  On flashlxuser1 or 2 start RCGUIFL1USER1 or appropriate to the DAQ you want to reconfigure. Select the tab "Run Modes". To then reload or re-init the run control database you need the expert menu entry:
397 397