Fermi National Laboratory

Accelerator Update for November 24, 2004 - November 29, 2004

Wednesday November 24
Operations ran the Linac and Booster machines.

An Antiproton Source (Pbar) expert turned on power supplies and found one that had a ground fault, A:LQ.

The Collider Detector at Fermilab (CDF), D-Zero (D0), and the Tevatron (TeV) were interlocked, and operators ramped the TeV to 980 GeV.

Thursday November 25
Operations ran the Linac and Booster machines.

Friday November 26
Operations ran the Linac and Booster machines.

A vacuum expert informed Operations that the Lambertsons and RF cavities at TeV sector F0 were looking good and would not need a bake out.

Operations received permission to run beam in the TeV.

Saturday November 27
Operations ran the Linac and Booster machines.

The Central Helium Liquefier (CHL) lost a nitrogen compressor due to a power loss. Feeder 30 faulted. Operations notified the high voltage experts.

Operators made the Main Injector (MI) ready for startup and studies. MI experts and operators established 120 GeV beam in the machine.

A TeV air compressor tripped off at C1. Techs came in and turned on the back up compressor.

An RF expert turned on the TeV HLRF systems.

Sunday November 28
Operations ran the Linac, Booster, and MI machines for studies and tuning.

CDF and D0 accessed their collision halls.

Experts established beam to the Pbar Accumulator.

TeV experts established a partial turn of beam to the TeV dump, but then suffered a quench at sector D2.

Monday November 29
Beam studies are in progress for MI, Pbar, and the TeV. Linac and Booster are operating normally.

The TeV suffered another D2 quench.

Pbar took reverse protons all night and the operators prepared the tunnel for an access.

Plans for Monday
The plan is to continue with beam startup.

Accelerator Update Archive

More Information
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last modified 11/29/2004   email Fermilab