Operations put the TeV through a dry squeeze at 12:51 PM.
Operations put the TeV into shot setup at 2:19 PM.
A Pbar water expert began his repairs at 3:57 PM.
Operations prepared the Pbar Prevault area for access at 4:18 PM. The Pbar experts were out of access thirty minutes later.
A Pbar RF station (ARF4) had developed a problem at the very end of the last shot. An expert repaired the station's driver at 4:19 PM.
Pbar resumed stacking at 5:06 PM.
A MI and Switchyard expert began conducting a 120 GeV slow extraction study at 6:06 PM. The studies ended around midnight.
A NuMI expert began a study period at 6:07 PM. The studies ended around midnight.
Operation loaded a 12x0 TeV study-store at 11:44 PM.
Saturday August 30
Operations loaded at 36x0 TeV study-store 1:29 AM.
At 2 AM, Booster beam was not making it into MI. Initial investigations indicated at kicker problem. However, while investigating, operators unplugged a scope cable and things began to work again. They continued to work after the cable was plugged back in.
The TeV experts completed their studies at 4:51 AM.
Operations put the TeV through a dry squeeze at 5:04 AM.
Operations put the TeV into shot setup around 5:30 AM. Unfortunately, the TeV suffered at sector A1 quench at 6:52 AM. Pbar resumed stacking.
Both MI and Pbar studies were completed by 12:18 PM.
Operations loaded another 12x0 study-store to help TeV experts investigate our quench problems. At 4:24 PM, Operations loaded 36x4 study-store. Operations terminated the study-store at 7:30 PM. TeV experts reported that the quenches were due to a problem with cogging and with the low level RF.
Two Booster RF stations (BRF 15 & 16) tripped off due to a vacuum pump tripping off. The pump and stations all reset okay.
At 10:46 PM, MI BLT problems occurred. Operations called in experts to investigate. They adjusted some possible timing conflicts at 11:49 PM.
Operations loaded another 36x4 study-store 10:51 PM.
Operations discovered a Pbar scope at 11:46 PM that had died. Experts were called in to replace the scope.
Sunday August 31
At 1:04 AM, the experts working on the MI BLT reported that they updated its communication capabilities.
Operations terminated the TeV study-store at 1:25 AM.
Operations put the TeV into shot setup and established store 2975 at 4:43 AM. Its initial luminosity was 2.8E31. Pbar resumed stacking.
A Pbar Debuncher RF station (DRF1) tripped off at 5:09 AM. Since this station being off wasn't hindering stacking, Operations decided to leave it off for the time being.
At 7:18 AM, a MI RF station (MIRF16) had already tripped off several times due to LCW flow problems. The station reset each time. Operators think it may have been due to a bad flow meter.
At 11:55 AM, the MI beam was halted due to a MECAR problem that occurred when NuMI experts began a study period. Operators power cycled the device locally and this had the problem resolved thirty minutes later. Pbar resumed stacking.
A Linac RF station (LRF4) tripped off at 1:47 PM. It reset okay.
NuMI studies finished at 6:42 PM.
LRF4 tripped off 6:47 PM and again at 7:11 PM. It reset okay.
Operations terminated store 2975 at 9:06 PM.
Operators made the D-zero (D0) collision hall ready for access at 9:15 PM.
Operations shot some protons into the Recycler for studies at 10:23 PM.
D0 came out of access at 11:04 PM.
Operations put the TeV through a dry squeeze at 11:38 PM.
Monday September 1
Operations put the TeV into shot setup at 12:10 AM.
At 1:32 AM, Operation reported still getting MI BLT errors. Experts were notified.
Operations established store 2977 at 2:03 AM with an initial luminosity of 4.2E31.
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|last modified 9/2/2003 email Fermilab|