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User name jpchen
Log entry time 16:00:44 on February23,2009
Entry number 262925
keyword=Day shift summary
Day shift summary:
Shift workers: J. P. Chen (SL), R. Michael (TO), S. Golge (3rd)
8:00 Continue production Kin. D, LHRS=0.9 GeV, at E=5.892 GeV,
beam 1/2 plate OUT, target longitudinal (0 degree), 15 uA.
8:21-8:30 found BB daq Deadtime 100%. ROC 10 not respond, rebooted and restarted CODA, all is fine.
9:00 Completed Kin. D, total charge 0.71 C.
9:00 Beam stopped for RF recovery/pass change 5 to 4.
Requested controlled access for BB trigger investigation (Kalyan, Xin and Brad) and RHRS work for Parity people (Bob and Ramesh). Also
Compton people: Alexandre, Dave Abbot, Diane and Frank. Jack.
run 1717, 7:21-8:20, 7M.
1718, 8:21-8:24, 100% dead time, Junk
1719, 8:31-9:03, 0.4M.
20354, 7:29-8:23, 0.6M
20358, 8:32-9:03, 335K.
9:50 changed LHRS from 0.9 GeV to 1.6 GeV
11:00 calibrated reference cell system pressure and vaccum gauge.
11:50 Target internal temperatue test for longitudinal pumping
13:15 Yi/Jin: Target pumping direction changed from longitudinal to transverse+. Replaced faulty pre-amp for target chamber NMR.
Checked COMET laser power. Found one COMET laser internal fiber
end broken. Replaced with the last spare fiber.
14:55 MCC called that they fixed problem in the inejctor and will
need hall a in beam permit in 1/2 hour.
15:30 MCC called to get people out.
15:50 Hall in beam permit.
15:55 filled reference cell with 114 psig N2.
16:00 Hall in beam permit. MCC tuning beam.