Accelerator Update for November 10, 2008 - November 12, 2008
Monday Nov 10
The day shift began with the Tevatron (TeV) turn on underway for studies, with Operations monitoring the Recycler stash (169.9E10), with the Antiproton Source stacking (83.9E10), with the Pelletron in access, and with the NuMI, MiniBooNE, and Meson MTest experiments taking beam.
A RF expert began working on station MIRF17 at 11:24 AM.
A MI expert began a study at 2:15 PM.
At 2:40 PM, the TeV quenched again at sector A1 during its first ramp. Experts investigated. Operators reported that the vacuum at A1 was good.
Operations reported at 3:10 PM that they had begun preparing the TeV sector A15 for access.
A MI expert reported at 5 PM that she had completed her MI study.
Recycler experts reported at 6:13 PM that they had completed their work and begun refilling the Pelletron with its spark retardant gas (SF6).
The TeV access into sector A1 was completed at 7:32 PM.
Operators ramped up the TeV successfully and then put it through a dry squeeze at 10:14 PM.
Tuesday Nov 11
The midnight shift began with the TeV in a dry squeeze, with Operations monitoring the stash (163.9E10), with the Pbar stacking (180.8E10), and with NuMI and MiniBooNE taking beam.
Operators reported at 1 AM that they had search and secured the Pelletron (MI-31).
A Recycler expert reported at 2:33 AM that the Pelletron’s Electron Cooling (ECOOL) system was operating normally.
Operations put the TeV through a dry squeeze at 3:01 AM.
Operations established beam to the MTest experiment at 5:49 AM.
Operations reported at 8:03 AM that the Recycler had stashed antiprotons twice during the midnight shift.
Linac experts reported at 10:07 AM that they were beginning a study.
At 12:08 PM, the D:ISEPV tripped off on a ground fault indication. It reset.
Operations put the TeV into shot setup at 1:40 PM.
Operations put Pbar into standby mode at 1:50 PM.
Linac experts ended their study around 4 PM.
At 4:54 PM, Operations reported a problem with the TeV sector E17 Schottky system. Experts investigated.
At 5:47 PM, Operations reported that the Meson Critical Device Controller tripped off for no obvious reason. Operators investigated.
Operations disabled the MTest beam at 6:04 PM.
Operations reported at 11:58 PM that the Recycler had stashed four times during the evening shift.
Wednesday Nov 12
The midnight shift began with Operations monitoring store 6553 (90.18E30) and the stash (277.7E10), with Pbar stacking (18.7E10), with the Collider Detector Facility (CDF) and D-Zero (D0) using the colliding beams, and with NuMI and MiniBooNE taking beam.
Operations terminated store 6553 at 4:29 AM.
Operations put the TeV into shot setup at 4:31 AM.
Operations established store 6554 at 6:26 AM with an initial luminosity of 300.9E30.
Water system experts reported at 7:04 AM that they had added water to the MI LCW system.
Operations reported at 7:57 AM that the Recycler had stashed six times during the midnight shift.
The Plans for Wednesday
The plans for today are to stack, stash, and store. The Run Coordinator will allow Linac, Booster, and MI experts to conduct studies.
Comments and Suggestions
|last modified 11/12/2008 email Fermilab|
|Security, Privacy, Legal|