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DAQ how to » History » Version 5

Alexandre Camsonne, 01/15/2021 12:15 AM

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h1. DAQ how to 
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on clrlpc, a-compton account
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to start coda ( need to be in tcsh )
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tcsh
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startcoda
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several windows will open
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click in Control in rcgui pull down connect
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select Configuration if not on desired configuration 
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Hit config , download, prestart and go to start a run
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Intelvmeha8 FADC only ( most stable )
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FADCTDCDSC : FADC + F1 TDC + readout of discriminator scalers - need to reset and download at each run for now - still need to check 
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In case ROC or PEB crash, do Ctrl-C in their window and do reset and rcgui and restart a run
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To look at data :
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on clrlpc :
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type tcsh
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cd companaEcal 
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./compana
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type run number
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type a
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type 1 for all events
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Open root file in Rootfiles directory
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root Rootfiles/vtpCerenkov_795.root
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One liner to display all waveforms :
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T->Draw("fadc_slot7:Iteration$","")
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Look  at one fadc channel
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T->Draw("fadc_slot7[3]:Iteration$","")
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To display event by event :
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i=0
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T->Draw("fadc_slot7:Iteration$","Iteration$>200&&Iteration$<600","L",1,i++)
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if you go up in history and hit enter it will display next event
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Rough amplitude spectrum, you can use Sum$ in ROOT
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<pre>
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T->Draw("Sum$(fadc_slot7[3])") 
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</pre>
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will plot sum of all samples
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You could eyeball the pedestal and window is 100 samples now
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<pre>
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T->Draw("Sum$(fadc_slot7[3])-100*pedestal") 
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</pre>
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would be centered at 0