Accelerator Update for June 15, 2009 - June 19, 2009
Monday June 15
Shutdown day 1.
During the day shift, Operations turned off all the Tevatron (TeV) pond water pumps. Linac personnel accessed the Linac to work on a RF station (LRF2). Part of the Booster vacuum system was turned off for work.
During the evening shift, the Linac downstream beam permit dropped out with no alarms posting. Operators tracked the problem down to two dump line valves. The valves were opened and the permit returned.
Tuesday June 16
Shutdown day 2.
During the day shift, the Neutron Therapy Facility (NTF) treated patients. Electricians turned off feeders 82 and 85. Operators turned off two Preaccelerator quadrupole power supplies to allow technicians to fix a LCW leak.
During the evening shift, operators found some vacuum pumps off in the NuMI beam line. Operators consulted with the experiment and turned the pumps back on. FESS had operators turn on the pond water pumps at MI60 to lower the level of the MI10 pond for the civil construction.
Wednesday June 17
Shutdown day 3.
During the day shift, Operations prepared Linac to run beam in a special mode.
During the evening shift, Linac personnel repaired a Klystron RF station (KRF6), which had tripped off on the day shift. Linac was prepared for access and the interlocks were dropped. Operators searched and secured MI-31.
Thursday June 18
Shutdown day 4.
During the day shift, the Antiproton Source was off all day due to a scheduled power outage.
During the evening shift, Electron Cooling personnel conducted studies from 4:30 to 5:00 PM. The Pbar power outage ended at 4:45 PM. Linac personnel conducted LRF4 studies until 6:45 PM. NTF personnel conducted studies from 6:30 to 9:30 PM.
Friday June 19
Shutdown day 5.
Shutdown work continued.
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