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User name Eric Voutier
Log entry time 16:05:37 on October16,2004
Entry number 134428
keyword=Shift Summary
New Crew on shift: Hachemi Benaoum, Amarian, Eric Voutier
-----------------
8:00 Continue data taking on run #3776
9:16 Stop data taking and ask for controlled access to change kinematics.
Have problems with the motion of the left spectrometer, reset the
"boogie left" from the electronics room in the counting house.
9:53 Led run (Catherine)
Proton array DC current checks at 2.5 uA (entry 134396)
11:00 Back to DVCS production at kinematics #2; DAQ is in DVCS mode
to check reliability of the DVCSMUX configuration for this kinematics.
11:24 Check Compton background, 300 Hz (electron), 800 Hz(gamma)
signal is about 900 Hz (electron), 1500 Hz (gamma)
11:37 Stop current run 3783 because of abnormal increasing deadtime
11:41 HV change for the channel 121 of the calorimeter (entry 134403)
12:47 Move to optics target after twoarm data on LH2
12:51 Twoarm data at 2.5 uA
13:05 Back to DVCS production
15:25 Bleedthrough measurement 1.67%
15:31 Acquisition troubles come in...
Run History
-----------
Kinematics # 1
#3776 LH2, DVCS production run, DVCSMUX, 200 k, good run
#3777 LH2, DVCS production run, DVCSMUX, 200 k, good run
Others
#3778 Junk
#3779 Led run
#3780-#3782 Junk
Kinematics # 2
#3783 LH2, DVCS production run, DVCSMUX, 60 k, good run
#3784 Junk
#3785 LH2, DVCS production run, DVCSMUX, 150 k, good run
#3786 LH2, Twoarm data
#3787 Optics, Twoarm data
#3788 LH2, DVCS production run, DVCSMUX, 150 k, good run
#3789 LH2, DVCS production run, DVCSMUX, 150 k, good run
#3790 LH2, DVCS production run, DVCSMUX, 9 k, good run but low rate