Accelerator Update - May 19-May 21
Last week the Fermilab accelerators broke several records. Fermilab set a new integrated luminosity record with a level of 9159 nb-1. The Main Injector (MI) broke a record that wasn't reported, that of a high intensity of protons, 5.45E12, being sent to the Antiproton Source (Pbar) target for a single pulse.
Operators established beam to the MI dump at 7:37 PM.
At 8:24 PM, a TeV expert began an end-of-store study with what was left of store 2562.
The Linac expert completed his studies at 8:54 PM. Operations established beam to MiniBooNe at 9:03 PM.
Operations discovered that a Pbar RF station (DRF1) was having a problem. Operators managed to get some beam to circulate so they could conduct a reverse proton study at 11:03 PM. Later a number of devices had a power loss. Operators called the Duty Mechanic to investigate a possible breaker problem.
At 11:51 PM, Operations put the TeV through a dry squeeze.
Tuesday May 20
At 6:55 AM, the Linac Klystron debuncher tripped off on a water flow indication. Operators found its water pump tripped off. It reset okay, but at 11:10 AM it tripped off several more times.
Switchyard (SY) experts began attempting to run beam to the SY dump at 10:14 AM. They eventually sent beam to TeV sector F45.
MI experts set a record intensity level of 2.15E13 multi-batching at 7 PM, which is how the NUMI experiment would be getting beam when it begins operating.
At 7 PM, the TeV quenched at sector BA while Operations was trying to abort the beam. TeV experts resumed their studies at 10:13 PM.
Wednesday May 21
At 12:03 AM, Pbar expert completed their studies.
Pbar began stacking at 1 AM.
At 7:32 AM, MI suffered a vacuum problem that caused many vacuum valves to close. The areas must be pumped down to open the valves. This problem halted stacking.
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|last modified 5/21/2003 email Fermilab|