Accelerator Update for July 5, 2006 - July 6, 2006
Wednesday July 5
The day shift began with Operations monitoring store 4813 and a Recycler stash, with the Collider Detector at Fermilab (CDF) and D-Zero (D0) using the colliding beam store, with the Antiproton Source (Pbar) stacking, with the Linac, Booster, Main Injector (MI), and Recycler operating normally, with NuMI off due to a horn cooling problem, and with MiniBooNE taking beam.
Operations established beam to the Meson MTest experiment at 10:07 AM.
The access into the H- Source ended at 1:21 PM.
Linac came out of access at 2:27 PM.
Booster came out of access at 4:56 PM.
MiniBooNE began taking beam at 5:35 PM.
Pbar began stacking at 5:39 PM.
At 5:43 PM, Operations reported that two cold compressors had tripped off due to over heating for the TeV sector A0 area. Cryo system technicians turned on a compressor at Switchyard (SY) and two other compressors (at D0 and E0) to compensate. The Duty Mechanic reported that this was a flow issue due to a clogged pond strainer.
At 6:34 PM, Operations halted beam for fifteen minutes so that techs could investigate a problem with the Booster ORBUMP power supply.
Pbar resumed stacking at 6:49 PM.
At 7:15 PM, Operations reported that the SY work wasn’t going well. Operations decided to prepare the Recycler to stash antiprotons.
The stash ended and Pbar resumed at 8:13 PM.
A FESS expert reported at 8:37 PM that they had added a fire hose at TeV sector A0 to improve water pressure. However, while doing this, the water pressure returned to normal; the clog released on its own.
Thursday July 6
The midnight shift began with Operations monitoring store 4813 and the stash, with Pbar stacking, and with MiniBooNE taking beam.
The Recycler began preparing to stash at 12:31 AM. The stash ended. Pbar resumed stacking at 1:13 AM.
At 4:32 AM, a Linac RF station (KRF6) tripped off on LCW flow. Operators were able to persuade the flow meter to resume normal operations.
The Recycler began preparing to stash at 5:17 AM. The stash ended. Pbar resumed stacking at 5:47 AM.
The Plans for Thursday
The plans for today are to terminate store 4813 at 1 PM and then allow TeV experts to conduct a two-hour study; a store will follow the study.
|last modified 07/06/2006 email Fermilab|