Accelerator Update - June 13-June 16
Friday June 13
At 9:25 AM the repairs were complete on A:LQ and we were stacking by 10:12 AM.
At ~12:12 PM SY120 studies were complete for the day. Beam was delivered to the absorber. There are a few instrumentation repairs to complete next week.
At about 12:27 PM, a power glitch caused some of the accelerator systems to trip off.
Feeder 44, which feeds Wilson Hall, MiniBooNe, NuMI, the Leaderman Center, and some other areas, tripped off due to a cable fault. Within a short period of time, power was rerouted and restored to these areas. The cable fault will be investigated and repaired at a later date.
Operations started to recover systems.
By 1:47 PM, Linac was back up and running and beam was back to Booster by 2:16 PM.
After the TeV was recovered, the D0 and CDF experiments made controlled accesses.
Pbar resumed stacking at 3:30 PM.
Booster tuning and problems with the TEL brought us into the evening shift. D0 completed their access earlier and CDF was out by 6:15 PM.
By 10:30 PM, the TeV was ramping and doing studies, the TEL was repaired and things were looking good.
Saturday June 14
At 3:50 AM, shot setup began.
A store with the initial luminosity of 30.0E30 was in the TeV by 6:00 AM.
The remainder of the shift was spent stacking, running beam to MiniBooNe and with a store in the TeV.
The store was terminated around 9:00 PM, and both CDF and D0 were allowed to make accesses. By 11:00 PM, they were out and the TeV was ramping again.
Shot setup was under way by 11:30 PM.
Sunday June 15
Operations had the store in the TeV with an initial luminosity of 34.4E30 by 2:00 AM. Pbar returned to stacking
The store stayed in and stacking continued throughout the day. The store was terminated at 6:00 PM and shot setup began within the hour.
There were problems during the shot and some protons had to be reloaded. There were also problems with some of the Pbar shots.
Despite the problems, the store was in the TeV by 9:00 PM. It had an initial luminosity of 28.0E30.
Monday June 16
Stacking resumed although there were some Linac trips and Booster vacuum problems.
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|last modified 6/19/2003 email Fermilab|