Log entry time 16:46:25 on December 12, 2009

Entry number 306456

Followups:

• 306481 12/12/09 18:55 pking Status update: back to production running.

Run Coordinator's Report for Friday 11 December Day through Saturday 12 December Day

Summary

• There is an open day shift on Monday, December 14, 2009, and a few open shifts 18-22 December. Please sign up!
  Beam is scheduled to turn off at 07:00 on 22 December.


• At the beginning of Friday day shift, beam was down due to a valve problem in SL. We used the short beam recovery procedure, then continued production running for SLUG 21.


• Friday swing shift continued data collection for SLUG 21. Also a set of Q^2 runs were taken with the VDC on (runs #26160/#5673).


• Saturday owl shift continued data collection for SLUG 21, until 01:53. SLUG 21 has a total of 1024k events. Began SLUG 22.


• Saturday about 06:45, RSEP9A tripped off; this is the separator for the five-pass recirculation arc.
  EES-DC was called in; at 11:00 they has found blown transistors in the power supply, and decided to replace the supply with a spare. At 1335, the changeout began.
  At the end of Saturday day shift, the projection was beam wouldn't recover before 17:00 or later.


• We achieved 15 hours of ABU from Friday Day through Saturday owl, and no hours of ABU in Saturday Day.
  Slug 21 was completed at 01:53, with 1024k events.
  At the end of Saturday owl, SLUG 22 had 162.8k pairs.

Run Plan

• The beam is currently down due to RSEP9A.


• After recovery, the plan for today and the weekend is to take production data on the LD2 target, at 5-pass.


• We may do the boiling study and a BCM calibration run over the weekend, but they may be delayed until early next week.

Requests

• There is an open day shift on Monday, December 14, 2009, and several open shifts 18-22 December. Please sign up!
• Shift Leaders: please write a detailed shift summary ( here is a great example) and submit the BTA for each shift. Please log CODA reboots in the halog and shift summary.
• 3rd person: Please make sure to start and stop the HRS DAQ at the same time as the parity DAQ and to do the prompt analysis and the HRS analyzer for every run.
• 3rd person: please keep a careful eye on the online data display. Most problems can be caught quickly this way.
• Please make sure that the shift checklist is done once each shift.

Data taken

• Production charge taken in the 32 hours ending Saturday Day: 2.9 C
• Total production charge taken in SLUG 21: 4.8 C


• Total production charge taken in SLUG 22, at the end of Saturday Day: 0.7 C


• Total production charge taken in all, end of Saturday Day: 70.7 C

Shift Summaries and BTA Reports

• Friday Day: Summary and BTA
• Friday Swing: Summary and BTA
• Saturday Owl: Summary and BTA
• Saturday Day: Summary and BTA

Figure 1