Accelerator Update for January 3, 2005 - January 5, 2005

Monday January 3 The day shift began with Operations trying to recover from the power outage. Operators prepared many areas for access. At 8:36 AM, a water expert had to turn off the Tevatron (TeV) LCW system due to cavitation. They had the system operating normally by 11:39 AM. Operations reported the following machine status at 2:17 PM: Linac will not be turned on until the power switchover occurs on Tuesday morning. The TeV cryo systems may take 24 to 48 hours to cool down. Current projects Collider Detector at Fermilab (CDF) low beta quadrupole magnet moves D-Zero (D0) forward proton detector work TeV LCW level work Antiproton Source (Pbar) transport collimator and scanner work Pbar transport gas bottle change out Pbar vacuum work TeV sector E0 plastic guard installation A:IB contactor replacement Main Injector (MI) flying wire work and Recycler RGA work Tuesday January 4 The midnight shift began with Operations monitoring systems. A planned power outage to switch power back to Master Substation occurred at 7:01 AM. It lasted fourteen minutes and then Operations started the recovery process. A Linac expert established beam through Linac at 2:14 PM. Operations established beam in Booster at 3 PM. Operations established beam to MiniBooNE at 3:17 PM MI experts had beam circulating in MI by 3:55 PM. Pbar began stacking around 4 PM. Recycler experts had protons circulating in the Recycler by 4:02 PM. Operations reported at 4:02 PM that technicians were still working in the TeV. Experts for MI, Recycler, and MiniBooNE were tuning and conducting studies. At 10:01 PM, the Pbar stack was lost due to a tripped breaker. Cryo techs at CHL reported at 11:58 PM that the TeV cryo system was ready. Wednesday January 5 The midnight shift began with the TeV checkout underway. At 1:10 AM, Pbar resumed stacking. Operations put the TeV through a dry squeeze at 5:07 AM. Operations reported at 5:30 AM that the Switchyard (SY) vacuum will support slow spill beam transport. SY startup began. The Plan for Wednesday The plan for today is to continue with machine checkouts and recovery. We hope to establish a store this evening. If all goes well with the store, we will resume stacking and then stash antiprotons into the Recycler. 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.