A MiniBooNE quadrupole power supply (E:Q874) tripped off at 10:53. There was no beam to MiniBooNE at the time of the trip. Experts investigated and found a controls problem. They had the supply on by 11:51 AM.
Booster experts began tuning the Booster beam at 11 AM.
MiniBooNE's Q847 tripped off at 2:22 PM. An expert investigated and found a loose connector in its breaker panel.
Operations terminated store 2715 at 4:30 PM.
The Collider Detector Facility (CDF) reported having a power supply failure that required an immediate access. Operators began preparing the enclosure for an access. Both CDF and the D-zero (D0) experimenters were accessing their collision halls by 7 PM.
D0 completed their access at 10:51 PM. CDF came out of access at 11:21 PM.
Operations put the TeV through a dry squeeze at 11:37 PM.
Tuesday June 24
Booster suffered trips of two RF stations (BRF4 & 13) at 12:17 AM. The trip indication was a power amplifier LCW leak. Operators reestablished beam 15 minutes later.
Operations established store 2718 at 2:15 AM with an initial luminosity of 39.4E30. Pbar resumed stacking.
At 7:42 AM, operators began preparing the Linac, Booster, MI, and MiniBooNE tunnels for a scheduled access.
The Linac access ended at 9:30 AM. MiniBooNE was out of access by 10:09 AM.
Operators established beam to the Booster dump at 11:40 AM.
The MI tunnel was made up by 12:15 PM.
Operations established beam to MiniBooNE at 1:08 PM. Problems developed with the MiniBooNE multiwires. Experts issued a "Set" command and resolved the problem around 2 PM.
Operations terminated store 2718 at 10:08 PM.
Vacuum technicians began working on the TeV sector E1 controls at 10:55 PM. At 11:30 PM, the vacuum experts were still trouble shooting problems.
Operations put the TEV into shot setup at 11:43 PM.
Wednesday June 25
The TeV suffered a sector BA quench at 1:36 AM, which caused the loss of store. Pbar resumed stacking. Experts investigated.
Operations began a dry squeeze at 5:57 AM, and the TeV suffered another sector BA quench on the first TeV ramp.
Comments and Suggestions
|last modified 6/25/2003 email Fermilab|