Difference between revisions of "Gemeel122 log 375"

Revision as of 16:21, 15 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
406	Ped	Mar 15 2011					Pedestal look ok. RMS is small again. [[1]]

@@ Line 42: / Line 42: @@
 |-
 | 391 || Ped || Mar 10 2011  ||  ||  || 0V ||  || Pedestal for Ch 1,2 and 3. Need to study
+|-
+|  406   ||Ped  || Mar 15 2011     ||  ||  ||  ||  || Pedestal look ok. RMS is small again. [[https://hallaweb.jlab.org/wiki/index.php/Image:Ped_rms_406.gif]]
 |-
 |     ||  ||      ||  ||  ||  ||  ||