User name C. C. Chang
Log entry time 16:05:51 on February23,2002
Entry number 3758
08:15 FPP tripped.
08:37 Called MCC to make hall access to fix gas problem (to increase gas flow
on FPP left Ch. 4)
09:15 VDC left bottom tripped.
09:20 Back to data taking.
09:40 ROC4 frozen. Rebooted a few times, but failed to restart.
10:20 Call Ting Chang; also call MCC to make hall access.
10:55 ROC4 problem fixed (see HALOG # 3704). Call MCC to restore beam.
11:08 Beam is back and we resume data taking.
11: 10 FPP left Ch. 4 HV seems stable now after increasing the gas flow rate.
11:42 FPP left Ch. 4 tripped again!
11:45 Alarm comes on and off indicating left VDC DISC LVL +5V (power
supply?) seems to fluctuate; alarm comes on when it is over +5.5V.
13:20 FPP left Ch. 4 tripped.
14:00 TS2 hanged, but reset successfully.
14:47 ROC4 hanged, but resedt successfully this time.
16:00 Has been a good shift with few minor problems.