|
Accelerator Update for February 27, 2008 - February 29, 2008 |
|
Wednesday February 27 The day shift began with Operations monitoring store 5934 (64.44E30), the Recycler maintaining a stash (290.3E10), with the Antiproton Source (Pbar) stack at (11.6E10), with the Linac, Booster, Main Injector (MI), and BooNEs off because of problems with LRF3. LRF3 was repaired by 2:44 PM. Beams returns to Pbar and BooNEs at 3:00 PM. Operations terminated store 5934 at 5:00 PM. Operations put the Tevatron (TeV) into shot setup at 5:30 PM. Tevatron Quench at B3 occurred at 6:47 PM. At 10:19 PM the Tev was ramping once again. Operations put the Tevatron (TeV) into shot setup at 11:04 PM. Thursday February 28 The midnight shift began with the Tevatron in shot setup and with BooNEs taking beam. At 12:36 AM, the Tevatron quenched at E39. Recovery and investigation were underway. Linac trim magnets tripped off at 2:50 AM, experts were called. Linac trim magnets were repaired at 6:00 AM. Stacking and beam to the BooNEs resumed at 6:21 AM. Controls problems with the Tevatron A Front End began occurring at 8:54 AM. These problems hampered Tevatron tuning throughout the dayshift. Linac KRF5 tripped at 4:14 PM, experts investigated. A bad solenoid power supply was changed for KRF5 and beam returns to Pbar and the BooNEs at 5:24 PM. Operations put the Tevatron (TeV) into shot setup at 7:26 PM. Operations established store 5943 at 11:38 PM with an initial luminosity of 180.7 E30. Friday February 29 The midnight shift began with Operations monitoring store 5943 (120.86E30), the Recycler maintaining a stash (105.6E10), with the Antiproton Source (Pbar) stack at (39.1E10), and beam to the BooNEs. The Plans for Friday and the weekend Continue to stack, stash, and store. |
|
More Information Comments and Suggestions
|
| last modified 02/29/2008 email Fermilab |
 |
|
| Security, Privacy, Legal |  |
