Log entry time 00:04:52 on April 28, 2004

Entry number 119623

	Hall A

	
04/27/04    1600-2400

	Experiment #: E94-107


	Shift Leader: Vincent Sulkosky


	    Shift Workers: Hachemi Benaoum, Paul Baturin, Joerg Reinhold


1600
1700
1800
1900
2000
2100
2200
2300
Total Time

Acceptable Beam
in Use
0.92
0.82
0.90
0.47
0.72
0.93
0.87
0.90
6.53
Beam Available
but Not in Use
0.03
0.18
0.03
0.48
0.10
0.02
0.07
0.03
0.95
Beam Not Available
or Unacceptable
0.05
0.00
0.05
0.03
0.18
0.05
0.07
0.07
0.50
Accelerator Con-
figuration Change
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Experiment
Ready
1.00
0.82
0.97
0.52
0.90
1.00
1.00
1.00
7.20
Planned Config-
uration Change
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
Unplanned
Experiment Down
0.00
0.18
0.03
0.48
0.10
0.00
0.00
0.00
0.80
Hall not
ready reasons
Target
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
Data Acq
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
Other
0.00
0.03
0.00
0.00
0.00
0.00
0.00
0.00
0.03
HRSL
0.00
0.15
0.03
0.48
0.10
0.00
0.00
0.00
0.77
HRSR
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
HALL_OFF
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

Comments: Alarm Handler was closed causing us not to see a RICH HV trip and Left VDC trip.  Lost time due to this.
19:31-20:04 Multiple RICH Trips (3 in an hour, 2 a minute apart) Lowered HV to 2075 V from 
2100 V
Data Entry by: V. Sulkosky