Difference between revisions of "Gemeel122 log 375"

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|  406  ||Ped  || Mar 15 2011    ||  ||  || 0V ||  || Pedestal look ok. RMS is small again,but problem with middle part of Ch1X.  Start gas flow. [[https://hallaweb.jlab.org/wiki/index.php/Image:Ped_rms_406.gif  RMS ]] [[https://hallaweb.jlab.org/wiki/index.php/Image:Ped_mean_406.gif  Mean]]
 
|  406  ||Ped  || Mar 15 2011    ||  ||  || 0V ||  || Pedestal look ok. RMS is small again,but problem with middle part of Ch1X.  Start gas flow. [[https://hallaweb.jlab.org/wiki/index.php/Image:Ped_rms_406.gif  RMS ]] [[https://hallaweb.jlab.org/wiki/index.php/Image:Ped_mean_406.gif  Mean]]
 
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|  407  ||cosmic  || Mar 15 2011    ||  ||  || 3800V ||  ||  
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|  407  ||cosmic  || Mar 15 2011    ||  ||  || 3800V ||  || Junk
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|  408  ||ped  || Mar 21 2011    ||  ||  || 3800V ||  || Hook up ch2 . Pedestals bad
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|  409  ||ped  || Mar 21 2011    ||  ||  || 3800V ||  || Junk
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|  410  ||ped  || Mar 21 2011    ||  ||  || 3800V ||  || Had ch1 cables into ch 2 input.
 
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Revision as of 14:38, 21 March 2011

RUN # Source/Cosmic/Pedestal Date Start Time End Time HV # of events notes
376 Pedestal Mar 9 2011 11:19:40 11:20:30 3.8V 1593 Chamber 1, problem with Y pedestals
377 Pedestal Mar 9 2011 3.8V junk, Do not see Y signals on the scope
378 Pedestal Mar 9 2011 3.8V junk, try changing board for Y readout.
379 Mar 9 2011 3.8V junk
380 Mar 10 2011 3.8V junk while fixing problem. Not clear what the fix was. Maybe the connecting cable between gassiplex boards was not connected securely
381 Mar 10 2011 3.8V junk, low voltage off!
382 Mar 10 2011 3.8V junk, low voltage off!
383 Ped Mar 10 2011 3.8V Good pedestal Chamber 1
384 Cosmic Mar 10 2011 3.8V Tried 55Fe source. Not good
385 Cosmic Mar 10 2011 3.8V 90Sr source, center of chamber 1
386 Cosmic Mar 10 2011 3.8V 90Sr source, move around chamber 1
387 Cosmic Mar 10 2011 15:03 3.86V 90Sr source, move around chamber 1
388 Ped Mar 10 2011 3.86V adjusted Ch 3 amplifier DC offset
389 Ped Mar 10 2011 3.86V Noticed ch 3 Y threshold had a gap
390 Ped Mar 10 2011 0V Connect up Chamber 2, play with DC offset for Ch 2
391 Ped Mar 10 2011 0V Pedestal for Ch 1,2 and 3. Need to study
404 Ped Mar 11 2011 Pedestal look bad. [RMS ] [Mean]
406 Ped Mar 15 2011 0V Pedestal look ok. RMS is small again,but problem with middle part of Ch1X. Start gas flow. [RMS ] [Mean]
407 cosmic Mar 15 2011 3800V Junk
408 ped Mar 21 2011 3800V Hook up ch2 . Pedestals bad
409 ped Mar 21 2011 3800V Junk
410 ped Mar 21 2011 3800V Had ch1 cables into ch 2 input.
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