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Wednesday June 29
The day shift began with Operations monitoring store 4241, with Anti Proton Source (Pbar) stacking, a Recyler Ring (RR) stash of 45.3E10,and with MiniBooNE, NuMI, and MCenter taking beam.
NuMI went down at 11:38 AM, when power supply E:HV101 ground faulted.
At 12:49 PM some of the RR correctors tripped off, this appeared to be caused by a power glitch and caused the Recycler to loose 33 E10 of its Pbars.
At 4:51 PM E:HV101 was repaired after they replaced a blown capacitor. NuMI resumed taking beam.
Beam began falling out of the Main Injector (MI) on the last NuMI injected batch at 8:00 PM, experts were called in to investigate and the problem was traced to the MI transverse damper system. After a reboot of the damper system beam returned to normal at 11:41 PM.
The store was terminated at 10:31 PM.
CDF and D0 both made accesses at 10:46 PM.
Both accesses were completed by midnight.
Thursday June 30
The midnight shift began with the Pbar stack at 155.3 E10, a RR stash of 5.8 E10, and with MiniBooNE, NuMI, and MCenter taking beam.
Shot Setup to Tevatron (Tev) started at 2:03 AM.
Operations established store 4243 at 4:42 AM with an initial luminosity of 72.36E30.
Pbar and MCenter resume taking beam.
Shot setup to the Recycler began at 8:55 AM and was completed by 10:00 AM.
Pbar stacking was stopped at 1:l5 PM for 2 sets of studies. Stacking resumed at 5:13 PM.
Friday July 1
The midnight shift began with Operations monitoring store 4243, with the Pbar stack at 124.2 E10, a RR stash of 54.1E10,and with MiniBooNE, NuMI, and MCenter taking beam.
Store 4243 was terminated at 5:07 AM.
CDF went into access at 5:16 AM, access was completed at 6:16 AM.
Shot Setup to Tev started at 7:31 AM.
The Plan for Friday and the Weekend
The plan for the weekend is to stack, stash, and store.
Accelerator Update Archive
More Information
For Tevatron luminosity charts and the current status of Fermilab's
accelerators and detectors (live!), please go to Fermilab Now
Comments and Suggestions
What do you think about the Accelerator Updates? Please send comments and suggestions to: accelupdates@fnal.gov.
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