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Accelerator Update for March 24, 2008 - March 26, 2008 |
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Monday March 24 The day shift began with Operations monitoring the Tevatron (TeV) store 6003 (61.07E30) and the Recycler stash (271.8E10), with the Antiproton Source stacking (31.0E10), with the Main Injector (MI), Linac, and Booster operating normally, with the Collider Detector at Fermilab (CDF) and DZero (D0) using the colliding beams, and with NuMI and the SciBooNE / MiniBooNE (BNB) experiments taking beam. The Neutron Therapy Facility (NTF) reported at 10:20 AM that they had completed treatment on their last patient for the day. At 10:43 AM, a Linac Klystron RF station (KRF3) tripped off. It reset. Operations terminated store 6003 at 11:53 AM. Operations put the TeV into shot setup at 12:06 PM. At 12:14 PM, a Linac RF station (LRF4) tripped off. It reset. At 1:56 PM, KRF2 tripped off. It reset. Operations established store 6004 at 2:16 PM with an initial luminosity of 242.93E30. At 2:35 PM, a Booster RF station (BRF9) tripped off. It reset. At 2:42 PM, KRF2 tripped off. It reset. Operations reported at 3:59 PM that the Recycler had stashed antiprotons three times during the day shift. At 5:47 PM, LRF4 tripped off for the first of three times in 45 minutes. It reset. At 8:15 PM, KRF4 tripped off. It reset. At 8:29 PM, KRF2 tripped off. It reset. At 9:45 PM, the MI vacuum computer (MIVAC) began acting erratically. Operations rebooted the computer. At 11:57 PM, KRF1 tripped off. It reset. Operations reported at 11:59 PM that the Recycler had stashed six times during the evening shift. Tuesday March 25 The midnight shift began with Operations monitoring store 6004 (87.86E30) and the stash (224.9E10), with Pbar stacking (15.9E10), and with NuMI and BNB taking beam. At 12:23 AM, LRF3 tripped off for the first of two times in one minute. It reset. At 1:11 AM, LRF2 tripped off. It reset. At 1:32 AM, KRF3 tripped off. It reset. At 2:23 AM, the Linac Klystron vernier tripped off. It reset. At 7:21 AM, the NuMI beam permit tripped off due to bad beam positions in AP-50. Everything reset. Operations reported at 8 AM that the Recycler had stashed five times during the midnight shift. Operations terminated store 6004 at 8:04 AM. Operations put the TeV into shot setup at 8:23 AM. Operations established store 6005 at 9:56 AM with an initial luminosity of 259.23E30. At 11 AM, BRF15 tripped off. It reset. At 11:43 AM, KRF5 tripped off. It reset. At 12:44 PM, a TeV vacuum pump (E0IP10) at sector E0 tripped off. The pump will be turned on at the end of store 6005. At 12:56 PM, the Linac Klystron vernier tripped off. It reset. A Pbar expert began a study at 1:01 PM. This study halted stacking and stopped beam for the NuMI and BNB experiments. An MI expert began a study at 1:55 PM. At 2:16 PM, KRF3 tripped off. It reset. At 2:58 PM, BRF12 tripped off. It reset. At 3:12 PM, LRF3 tripped off. It reset. Operations reported at 4 PM that the Recycler had stashed four times during the day shift. Booster experts began, at 4:05 PM, connecting the Linac Spectrometer (L:SPEC) for remote control. This work held off beam for about 15 minutes. Operations reported at 11:56 PM that the Recycler had stashed four times during the evening shift. Wednesday March 26 The midnight shift began with Operations monitoring store 6005 (73.43E30) and the stash (296.5E10), with Pbar stacking (18.6E10), and with NuMI and BNB taking beam. At 1 AM, KRF4 tripped off. It reset. At 3:06 AM, KRF3 tripped off. It reset. Operations terminated store 6005 at 5:08 AM. Operations put the TeV through a dry squeeze at 7:29 AM. Operations put the TeV into shot setup at 7:37 AM. At 7:45 AM, a TeV separator at sector A7 sparked during a reverse proton injection tune-up. Operations reported at 7:58 AM that the Recycler had stashed four times during the midnight shift. The Plans for Wednesday The plans for today are to stack, stash, and store. |
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| last modified 03/26/2008 email Fermilab |
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