Gemeel122 log 375

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		Rasie Ch1 amp dc offset