MiniBooNE tripped off at 1:54 PM due to a quadrupole power supply (Q874) breaker problem. The Duty Electrician (DE) reset the breaker.
Operations put the TeV through a dry squeeze at 2:53 PM and then put the TeV into shot setup at 3:13PM.
A Booster dipole power supply (B:V803) tripped off on high temperature at 6:18 PM. Operators put a fan on the supply and had it back in operation by 6:47 PM.
MiniBooNE's Q874 tripped off at 6:25 PM. The DE reset the breaker and Operations resumed sending beam to MiniBooNE at 7:03 PM. It then tripped off again at 8 PM and then three more times over the next three hours.
Thursday June 26
Q874 tripped again at 12:09 AM. The DE reset the breaker at 12:35 AM.
At 7:40 AM, Operations turned off MiniBooNE beam so a tech could replace the Q874 breaker. Beam returned to MiniBooNE at 8:15 AM.
Operations terminated store 2723 at 10:35 AM. Shot setup began at 11:30 AM.
Operations established store 2725 at 1:20 PM. Its initial luminosity was 33.85E30. Pbar resumed stacking.
Operations began conducting some NuMI studies at 3:42 PM.
Another Switchyard expert began a study period that ran from 7 PM until a little after midnight.
Friday June 27
A Main Injector expert conducted a study from 12:34 AM to 3:24 AM.
Comments and Suggestions
|last modified 6/27/2003 email Fermilab|