Difference between revisions of "Gemeel122 log 375"

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| 391 || Ped || Mar 10 2011  ||  ||  || 0V ||  || Pedestal for Ch 1,2 and 3. Need to study
 
| 391 || Ped || Mar 10 2011  ||  ||  || 0V ||  || Pedestal for Ch 1,2 and 3. Need to study
 
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|  406   ||Ped  || Mar 15 2011    ||  ||  ||  ||  || Pedestal look ok. RMS is small again. [[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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|  404   ||Ped  || Mar 11 2011    ||  ||  ||  ||  || Pedestal look bad. [[https://hallaweb.jlab.org/wiki/index.php/Image:Ped_rms_404.gif RMS ]] [[https://hallaweb.jlab.org/wiki/index.php/Image:Ped_mean_404.gif Mean]]
 
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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]]
 
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|  407  ||cosmic  || Mar 15 2011    ||  ||  || 3800V ||  || Junk
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|  408  ||ped  || Mar 21 2011    ||  ||  || 0V ||  || Hook up ch2 . Pedestals bad
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|  409  ||ped  || Mar 21 2011    ||  ||  || 0V ||  || Junk
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|  410  ||ped  || Mar 21 2011    ||  ||  || 0V ||  || Had ch1 cables into ch 2 input.
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|  411  ||ped  || Mar 21 2011    ||  ||  || 0V ||  || Put ch1 cable back in proper input. Replace gassiplex card and connector for ch2x
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|  412  ||ped  || Mar 21 2011    ||  ||  || 0V ||  || Replace gassiplex card and connector for ch1x. ch1x ped mean looks better. Now the ped on all are larger even when not connected to GEMS.
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|  413  ||ped  || Mar 21 2011    ||  ||  || 0V ||  || Change nothing. pedestal RMS small.
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|  414  ||ped  || Mar 21 2011    ||  ||  || 0V ||  || Connect CH1 gassiplex to GEM.
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|  417  ||ped  || Mar 21 2011    ||  ||  || 0V ||  || Connect Ch1 and Ch2 to GEM.
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|  418  ||ped  || Mar 21 2011    ||  ||  || 0V ||  || Connect all gassiplex to GEM. Ped RMS good
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|  419  ||ped  || Mar 21 2011    ||  ||  || 0V ||  || Junk. Move Ch1 back to original amplifier card
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|  420 ||source  || Mar 21 2011    ||  ||  || 3500V ||  || Only ch2 HV with 90Sr source. Ch2 tripped.
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|  421 ||source  || Mar 21 2011    ||  ||  || 3500V ||  || Only ch2 HV with 90Sr source. Ch2 tripped. Do not see source
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|  422 ||source  || Mar 21 2011    ||  ||  || 3850V ||  || Only ch1 HV with 90Sr source. Do not see Ch1Y
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|  423 ||ped  || Mar 21 2011    ||  ||  || 3850V ||  || Raise Ch1 amp dc offset
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|  424 ||source  || Mar 21 2011    ||  ||  || 3850V ||  || Only ch1 HV with 90Sr source.Do not see Ch1Y
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|  425 ||source  || Mar 21 2011    ||  ||  || 3850V ||  || Only ch1 HV with 90Sr source. Reset the short connecting gassiplex cable. Now nothing makes sense.
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|  426 ||source  || Mar 21 2011    ||  ||  || 3850V ||  || Only ch1 HV with 90Sr source. Reset the short connecting gassiplex cable.
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|  427 ||ped  || Mar 21 2011    ||  ||  || 3850V ||  ||
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|  428 ||ped  || Mar 21 2011    ||  ||  || 3850V ||  || try new amp board
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|  428 ||source || Mar 21 2011    ||  ||  || 3850V ||  || 90Sr in middle of Ch1. no ch1y
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|  429 ||source || Mar 21 2011    ||  ||  || 3850V ||  || 90Sr in middle of Ch1. Replace the Ch1Y gassiplex board
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|  430 ||source || Mar 21 2011    ||  ||  || 3850V ||  || 90Sr on ch3. Looks fine except for region of ch3y where pedestal are low.
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|  431 ||source || Mar 21 2011    ||  ||  || 3850V ||  || 90Sr on ch1. Still do not see any ch1y.
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|  433 || ped || Mar 23 2011    ||  ||  || 3850V ||  ||
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|  434 || source || Mar 23 2011    ||  ||  || 3850V ||  || 90Sr on Ch1
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|  435 || source || Mar 23 2011    ||  ||  || 3850V ||  || 90Sr on Ch3 . Gas flow is one section flow through CH1 then through CH3 then to bubbler. The other section flows to ch2.
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|  436 || source || Mar 23 2011    ||  ||  || 3850V ||  || 90Sr on Ch3 . Before run change gas flow so individual gas flow for each chamber
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|  437 || source || Mar 23 2011    ||  ||  || 3850V ||  || 90Sr on Ch3 . CHange Ch3Y connector. Still problem.
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|  438 || source || Mar 23 2011    ||  ||  || 3850V ||  || 90Sr on Ch3 . CHange Ch3Y gassiplex board.
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|  439 || ped || Mar 23 2011    ||  ||  || 3850V ||  ||
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|  440 || source || Mar 23 2011    ||  ||  || 3900V ||  || only HV on ch3. Fix problem. But now hole in CH3Y
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|  441 || source || Mar 23 2011    ||  ||  || 3900V ||  || only HV on ch3. Confirm problem. Move 90Sr across X at middle Y.
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|  442 || source || Mar 23 2011    ||  ||  || 3900V ||  || only HV on ch3. Change Ch3y board again.
 
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Latest revision as of 17:21, 23 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 0V Hook up ch2 . Pedestals bad
409 ped Mar 21 2011 0V Junk
410 ped Mar 21 2011 0V Had ch1 cables into ch 2 input.
411 ped Mar 21 2011 0V Put ch1 cable back in proper input. Replace gassiplex card and connector for ch2x
412 ped Mar 21 2011 0V Replace gassiplex card and connector for ch1x. ch1x ped mean looks better. Now the ped on all are larger even when not connected to GEMS.
413 ped Mar 21 2011 0V Change nothing. pedestal RMS small.
414 ped Mar 21 2011 0V Connect CH1 gassiplex to GEM.
417 ped Mar 21 2011 0V Connect Ch1 and Ch2 to GEM.
418 ped Mar 21 2011 0V Connect all gassiplex to GEM. Ped RMS good
419 ped Mar 21 2011 0V Junk. Move Ch1 back to original amplifier card
420 source Mar 21 2011 3500V Only ch2 HV with 90Sr source. Ch2 tripped.
421 source Mar 21 2011 3500V Only ch2 HV with 90Sr source. Ch2 tripped. Do not see source
422 source Mar 21 2011 3850V Only ch1 HV with 90Sr source. Do not see Ch1Y
423 ped Mar 21 2011 3850V Raise Ch1 amp dc offset
424 source Mar 21 2011 3850V Only ch1 HV with 90Sr source.Do not see Ch1Y
425 source Mar 21 2011 3850V Only ch1 HV with 90Sr source. Reset the short connecting gassiplex cable. Now nothing makes sense.
426 source Mar 21 2011 3850V Only ch1 HV with 90Sr source. Reset the short connecting gassiplex cable.
427 ped Mar 21 2011 3850V
428 ped Mar 21 2011 3850V try new amp board
428 source Mar 21 2011 3850V 90Sr in middle of Ch1. no ch1y
429 source Mar 21 2011 3850V 90Sr in middle of Ch1. Replace the Ch1Y gassiplex board
430 source Mar 21 2011 3850V 90Sr on ch3. Looks fine except for region of ch3y where pedestal are low.
431 source Mar 21 2011 3850V 90Sr on ch1. Still do not see any ch1y.
433 ped Mar 23 2011 3850V
434 source Mar 23 2011 3850V 90Sr on Ch1
435 source Mar 23 2011 3850V 90Sr on Ch3 . Gas flow is one section flow through CH1 then through CH3 then to bubbler. The other section flows to ch2.
436 source Mar 23 2011 3850V 90Sr on Ch3 . Before run change gas flow so individual gas flow for each chamber
437 source Mar 23 2011 3850V 90Sr on Ch3 . CHange Ch3Y connector. Still problem.
438 source Mar 23 2011 3850V 90Sr on Ch3 . CHange Ch3Y gassiplex board.
439 ped Mar 23 2011 3850V
440 source Mar 23 2011 3900V only HV on ch3. Fix problem. But now hole in CH3Y
441 source Mar 23 2011 3900V only HV on ch3. Confirm problem. Move 90Sr across X at middle Y.
442 source Mar 23 2011 3900V only HV on ch3. Change Ch3y board again.
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