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Last modified by sndueste on 2025-09-08 15:36
From version 1.1
edited by sendels
on 2019-05-15 09:21
Change comment: There is no comment for this version
To version 5.1
edited by sendels
on 2019-05-15 12:53
Change comment: There is no comment for this version

Summary

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25 25  
26 26  == General Concept ==
27 27  
28 -A large number of parameters which are essential for ALL Experiments is continuously saved (pulse energy, arrival time, Beamline settings ...) in the [[PHOTONDIAGNOSTIC FLASH DAQ>>url:http://hasfweb.desy.de/bin/view/Setup/DAQPbdDescription||shape="rect" class="twikiLink"]] system.
29 -Other [[experiment related information>>url:http://hasfweb.desy.de/bin/view/Setup/DAQExp2Description||shape="rect" class="twikiLink"]] is ONLY saved by the users ON DEMAND in the FLASH DAQ system. To record this type of data we have 3 User DAQs at FLASH1 (FLASH1_USER1,FLASH1_USER2 and FLASH1_USER3) and one at FLASH 2 (FLASH2_USER1)
28 +A large number of parameters which are essential for ALL Experiments is continuously saved (pulse energy, arrival time, Beamline settings ...) in the [[ PHOTONDIAGNOSTIC FLASH DAQ>>doc:FLASHUSER.PBD DAQ]] system.
29 +Other [[experiment related information>>doc:FLASHUSER.Description of the Properties in the FLASH1_USER1, 2 and 3 for FLASH1 Users]] is ONLY saved by the users ON DEMAND in the FLASH DAQ system. To record this type of data we have 3 User DAQs at FLASH1 (FLASH1_USER1,FLASH1_USER2 and FLASH1_USER3) and one at FLASH 2 (FLASH2_USER1)
30 30  How to save this experiment related "User-Data" will be explained briefly in this page:
31 31  
32 32  \\
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48 48  
49 49  \\
50 50  
51 -* By pressing the start and stop button, besides sending the commands to the DAQ the button prints the panel to the respective beamline / experiments logbook. Here you can later on keep track of the runs. Links to the Beamline logbooks can be found [[here>>url:http://hasfweb.desy.de/bin/view/Setup/ELogs||shape="rect" class="twikiLink"]] (DESY internal link)
51 +* By pressing the start and stop button, besides sending the commands to the DAQ the button prints the panel to the respective beamline / experiments logbook. Here you can later on keep track of the runs. Links to the Beamline logbooks can be found [[here>>doc:FLASHUSER.Electronic Logbooks]] (DESY internal link)
52 52  * After starting, the stop button appears only after saving abut 200 shots to prevent too early stopping which may disturb the DAQ.
53 53  * Each run has a unique run number. This number is needed to retrieve the data later on. So it is important to keep track which number is associated to what experimental parameters. Note that the run numbers are used by all FLASH DAQs (currently about 10). It might thus well be, that two consecutive runs from you do have run numbers which are spaced by more than one if another DAQ has been started in-between ...
54 54  
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96 96  [[image:url:http://hasfweb.desy.de/pub/Setup/DAQjddd/DAQgui1.jpg||alt="DAQgui1.jpg" width="500" height="350"]][[image:url:http://hasfweb.desy.de/pub/Setup/DAQjddd/DAQgui2.jpg||alt="DAQgui2.jpg" width="500" height="350"]][[image:url:http://hasfweb.desy.de/pub/Setup/DAQjddd/daqgui3.png||alt="daqgui3.png" width="500" height="350"]]
97 97  \\
98 98  
99 -The DAQ Data GUI is a general tool to select and visualise data that was saved in the DAQ . It has in addition simple analysis options like histogram, mean, min or max values as function of time etc. Also correlations between different parameters can be analyzed in the tool. More details can be found [[How to Use the FLASH DAQ Data GUI?~[~[image:url:http://hasfweb.desy.de/pub/TWiki/TWikiDocGraphics/external-link.gif~|~|width="13" height="12"~]~]>>url:https://ttfinfo.desy.de/FLASHWiki/Wiki.jsp?page=FLASHDAQdataGUI||shape="rect"]] and [[here (DAQdataGUI link collection)>>url:http://hasfweb.desy.de/bin/view/Setup/DAQRootGui#How_to_Use_the_FLASH_DAQ_Data_GU||shape="rect" class="twikiAnchorLink"]]
99 +The DAQ Data GUI is a general tool to select and visualise data that was saved in the DAQ . It has in addition simple analysis options like histogram, mean, min or max values as function of time etc. Also correlations between different parameters can be analyzed in the tool. More details can be found [[How to Use the FLASH DAQ Data GUI?~[~[image:url:http://hasfweb.desy.de/pub/TWiki/TWikiDocGraphics/external-link.gif~|~|width="13" height="12"~]~]>>url:https://ttfinfo.desy.de/FLASHWiki/Wiki.jsp?page=FLASHDAQdataGUI||shape="rect"]] and [[ here (DAQdataGUI link collection) >>doc:FLASHUSER.How to get the data out of the DAQ]]
100 100  
101 101  The tool (separate Java program) can be started [[DAQdataGUI~[~[image:url:http://hasfweb.desy.de/pub/TWiki/TWikiDocGraphics/external-link.gif~|~|width="13" height="12"~]~]>>url:http://ttfinfo2.desy.de/common/applications/DAQdataGUI-experimental.jnlp||shape="rect"]] or in the DAQ control panel ( lower right) on your local (Desy) PC. In some cases the access via Windows does not work. An option which should always work is to log onto {{code language="none"}}flashlxuser1{{/code}} or {{code language="none"}}flashlxuser2{{/code}} and start {{code language="none"}}DAQdataGUI{{/code}} from the command line.
102 102  
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113 113  
114 114  === How to get the data out for analysis (short summary) ===
115 115  
116 -The (% class="twikiNewLink" %)[[DAQdataGui>>url:http://hasfweb.desy.de/bin/edit/Setup/DAQdataGui?topicparent=Setup.DAQjddd;nowysiwyg=0||rel="nofollow" shape="rect"]](%%) is a powerful tool to visualize the saved data and to do very preliminary analysis. however for more detailed analysis the data has to be read into analysis programs ( matlab, python, Origin ...) here are different options one can use (what option is the best and how to set it up has to be discussed before hand with the FLASH DAQ experts ...)
116 +The (% class="twikiNewLink" %)DAQdataGui(%%) is a powerful tool to visualize the saved data and to do very preliminary analysis. however for more detailed analysis the data has to be read into analysis programs ( matlab, python, Origin ...) here are different options one can use (what option is the best and how to set it up has to be discussed before hand with the FLASH DAQ experts ...)
117 117  
118 118  * The FLASH DAQ system records the data in binary " {{code language="none"}}.raw{{/code}} " files.
119 -** [[reading the data via Matlab >>url:http://hasfweb.desy.de/bin/view/Setup/DAQMatlabAccessExamples||shape="rect" class="twikiLink"]]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).
119 +** [[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).
120 120  ** Examples how to read from {{code language="none"}}.raw{{/code}} files can also be found in [[the user code collection>>url:http://hasfweb.desy.de/bin/view/Setup/UserCodeCollection||shape="rect" class="twikiLink"]]
121 121  ** 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 ...
122 122  
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160 160  
161 161  \\
162 162  
163 +(% class="wrapped" %)
163 163  |(((
164 164  Unix command
165 165  )))|(((
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337 337  \\
338 338  
339 339  * if the DAQ gets stuck in the starting or stopping procedure one can try to initialize the DAQ or in the worst case restart it.
340 -** to be able to restart the DAQ one has to run jddd on the {{code language="none"}}flashlxuser1{{/code}} or {{code language="none"}}flashlxuser2{{/code}} (up to now (Aug 2018) the restat on our consoles (cons0...12) is NOT possible yet [[image:url:http://hasfweb.desy.de/pub/TWiki/SmiliesPlugin/frown.gif||alt="frown" title="frown"]]) : log in at one of these machines with your beamline account (e.g. bl1user or fl24user). Start jddd with the {{code language="none"}}jFLASH{{/code}} command. Click on "Photons" -> Experimental Hall "Photons main panel"
341 +** to be able to restart the DAQ one has to run jddd on the {{code language="none"}}flashlxuser1{{/code}} or {{code language="none"}}flashlxuser2{{/code}} (up to now (Aug 2018) the restat on our consoles (cons0...12) is NOT possible yet [[image:url:http://hasfweb.desy.de/pub/TWiki/SmiliesPlugin/frown.gif||alt="frown"]]) : log in at one of these machines with your beamline account (e.g. bl1user or fl24user). Start jddd with the {{code language="none"}}jFLASH{{/code}} command. Click on "Photons" -> Experimental Hall "Photons main panel"
341 341  ** The DAQ "expert" panel can be reached from the User DAQ control panel.
342 342  [[image:url:http://hasfweb.desy.de/pub/Setup/DAQjddd/DAQ_expert.jpg||alt="DAQ_expert.jpg" width="400" height="350"]]
343 343