Log entry time 15:56:49 on December 01, 2010

Entry number 342255

Crew:
C. Hyde (SL)
I. Korover (TO)
L. Zana (3rd)

Summary:
Straight through 5 pass beam
Kin-III High LH2 target

Timeline:

• 08:00 Run 9136 in progress LH2 Target Half Wave Plate IN
• 08:20 Start Run 9137
• 08:30 Beam has sagged to 2.7 muA Request increase to 2.9 muA
• 08:35 Hall C request to take Half Wave Plate OUT. Asked for 15 min for Run 9137
• 08:53 Half Wave Plate OUT Start Run 9138
• 09:35 Beam unstable and jumping>4muA run 9138
• 09:53 Start Run 9139
• 10:55 Start Run 9140
• 11:30 -- 12:00 examined D,U VtoF x10 signals on scope in middle room. small but stable after pulse at 2 mu sec on D VtoF
• 11:56 Start Run 9141 and 9142 Triger test runs
• 12:05 Start Run 9143
• 13:05 Start Run 9144
• 14:10 Start Run 9145
• 14:20 No end of run halog for Run 9144 rebooted DVCS IOC
• 14:25 Noticed event rate fluctuation at beginning of run 9145> looks like T7
• 14:35 T7 problem tied to DVCS IOC reboot. see halogs 342244 and 342245
• 15:05 Reported to MCC ABU 7.06 BANU 0.23
• 15:06 Start Run 9146
• 15:53 Start Run 9147

• Run Events BCM U3 D3 (C) Time Avg Curr Deadtime %
• 9136 998 k 0.01031 0.01031 61.4 mins 2.7973 uA 11.86
• 9137 464 k 0.00478 0.00482 28.6 mins 2.7964 uA 13.07
• 9138 957 k 0.00993 0.00994 59.9 mins 2.7641 uA 18.20
• 9139 936 k 0.00963 0.00960 61.6 mins 2.6038 uA 14.88
• 9140 977 k 0.01007 0.01007 61.3 mins 2.7365 uA 14.69
• 9143 972 k 0.00997 0.01001 61.4 mins 2.7114 uA 15.42
• 9144 588 K no end of run halog
• 9145 1975 k 0.00950 0.00951 56.7 mins 2.7958 uA 59.55 T7 problem at beginning
• 9146 720 k 0.00740 0.00744 46.6 mins 2.6531 uA 14.95