Voltages and thresholds increased for PMT Middle and North (in order to account for the ADC measurement in DAQ2
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PMT South ("braodband") ET9422 | 1500 V | thresh: 7
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PMT Middle ("smallband") ET9423 | 2650 V | thresh: 10
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PMT North ("smallband") ET9423 | 2650 V | thresh: 12
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Tests with laser
Thresholds adjusted for PD SO and PD NO.
Smaller adjustements in the analysis cdoe of DAQ1 (directory 229Th) to deal with the proper alignment of laser steps (Step-spectra). Seems to solved now.
DAQ rate/trigger rate DAQ1 - interference with Labview
DAQ1 can be started without connection to Labview server after some timeout (~ 1min) or so the usual trigger rtate of 200 Hz can be seen in mbs (via: "sh acq" command)
If the Labview server is closed, e.g. during the run or between to laser runs - the DAQ rate drops to 30 Hz only. Very likely MBS is busy trying to fetch data from the non existing Labiew server.
The problem can be solved by leaving closing the the DAQ (MBS not Go4...) and restarting mbs/DAQ, e.g. via @shutdown, leave mbs, resl, start mbs, Qstartup, start acq.
Of course, also Go4 needs to be restarted to establish a new connection to MBS.
The DAQ rate of DAQ1 should be regularly checked with sh acq !
Test data
DAQ1: 005.lmd
DAQ2: 010.lmd
both rubbish, partially adjustments of threshilds etc.
~2.7e6 ions (238U92+)
201 laser steps 550nm, 549nm, 50 shots per step
DAQ1: 006.lmd
DAQ2: 011.lmd/012.lmd
Threshold for PD SO not adjusted
restart
DAQ1: 007.lmd
DAQ2 013-017.lmd
same with few 10^5 ions:
DAQ1: 008.lmd
DAQ2: 018-020.lmd |