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User name cdaq

Log entry time 05:28:29 on March 17, 2011

Entry number 224248

keyword=Run 10815: LH2 target, Large Negative charge asym. PC offset by 2500

Experiment qweak

Run #10815 - /net/cdaq/scratch2/qweak/rawdata/parity_10815.dat.0

HV used HV.2010-12-02-09:50:00.hvcHV.2010-12-02-09:50:00.hvc
PS1 0 0
PS2 16777215 16777215
PS3 16777215 16777215
PS4 16777215 16777215
PS5 65535 65535
PS6 65535 65535
PS7 65535 65535
PS8 65535 65535
Beam Energy (MeV) 1159.57 1159.57
Beam Current BCM1 (uA) 148.171 148.171
Beam Current BCM2 (uA) 145.945 145.945
Half Wave Plate OUT OUT
Raster (width) X mm 3.5 3.5
Raster (height) Y mm 3.5 3.5
Qweak Target HYDROGEN-CELL HYDROGEN-CELL
All pmts fine? yesyes
Number of sick pmts

Offsetting Pockels Cell values by 2500
Current IHWP state is OUT
Norminal PC_pos = 42970
Current PC_pos = 45470
Norminal PC_neg = 41230
Current PC_neg = 38730
Setting PC positive setpoint to 40470 to get large negative charge asymmetry
Old : C1068_QDAC01 45470
New : C1068_QDAC01 40470
Setting PC positive setpoint to 43730 to get large negative charge asymmetry
Old : C1068_QDAC02 38730
New : C1068_QDAC02 43730