Monday November 14

The day shift began with Operations monitoring the Linac, Booster, and Main Injector (MI), and with the MiniBooNE, NuMI, and the Meson FTBFT-978 experiments taking beam.

During the day shift, Operations turned off the MiniBooNE beam at 9:51 AM to access the MI-12 service building. A MI person began a Booster-MI energy match study at 10:06 AM. At 10:18 AM, the P1 transfer line suffered a vacuum burst when operators reset a vacuum pump; it recovered. Operations turned off the NuMI beam for 15 minutes at 10:24 AM for kicker (I:KPS6N) work. Operations resumed sending beam to MiniBooNE at 1:50 PM. Operators searched and secured the Muon Rings (formerly the Antiproton Source) at 3 PM.

During the evening shift, at 4:32 PM, the P1 transfer line beam permit tripped off when a beam valve (I:BV701) closed; air compressors at MI-20 and MI-60S also tripped off at the same time; operators investigated. Operations reestablished MI beam at 5:29 PM. The MI beam valve, BV701, closed and would not open. Operators thought there was an air leak. This valve problem halted beam to T-978. Operators contacted Mechanical Support personnel and made arrangement to repair the valve early Tuesday morning. Operators reset two P1 transfer line ion pumps at 11:49 PM.

Tuesday November 15

The midnight shift began with Operations sending beam to the NuMI and MiniBooNE.

During the midnight shift, Operations stopped sending beam to MI and NuMI at 6 AM in preparation for an access at 7 AM. Operations turned off the MiniBooNE beam at 6:42 AM in preparation for an access later in the morning. At 7 AM, Neutron Therapy Facility personnel began preparing to treat one patient later in the morning. A Mechanical Support person reported at 7:40 AM that they were replacing the airline that goes to BV701.

During the day shift, MiniBooNE personnel accessed MI-65 at 8:35 AM. The MI vacuum work (BV701) ended at 8:54 AM. MiniBooNE personnel came out off MI-65 and operations resumed sending beam to MiniBooNE at 9:25 AM. Operations established beam to T-978 at 9:38 AM. A Muon Ring person began a study at 9:57 AM. Operations established beam to NuMI at 12:22 PM. A MI person began an hour and a half study at 1:01 PM.

During the evening shift, the Muon person completed his study at 4:15 PM. At 4:27 PM, a Linac person reported that he turned off a Klystron RF station (KRF6) due to a LCW leak; a Water Group person repaired the leak and Linac beam returned at 5:16 PM. Operations disabled the T-978 beam at 9:06 PM. Operators completed a tune of the 750 KeV line at 9:53 PM. A Booster RF station (BRF19) tripped off at 10:01 PM; it reset. Operators completed a Booster injection tune at 10:29 PM.

Wednesday November 16

The midnight shift began with Operations sending beam to the NuMI and MiniBooNE.

During the midnight shift, at 1:27 AM, operators reported a Linac 55 LCW system leak; operators investigated and discovered a split hose for a sensor. Operators valved off the leak and contacted the Duty Mechanic. This leak did not interrupt the Linac beam. Operations established beam to T-978 around 7:45 AM.

Operations Coordinator (OpsCo) Plans for Today

The OpsCo approved of the plans by Booster, MI, and Muon personnel to conduct studies. MTA will take beam today.

Accelerator Update Archive

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