DIRC Operations Weekly Report
Period: Saturday 2006/07/01 - Friday 2006/07/07
Oncall: Jerome Bequilleux
Fast Monitoring: Rolf Andreassen, Jerome Bequilleux
File location: $BFROOT/www/Detector/DIRC/WeeklyReports/report_20060708.html
Plot directory: $BFROOT/www/Detector/DIRC/WeeklyReports/Plots/report_20060623 (empty)
PEP peak lumi: ~11*1033
(previous week: 10.2*1033)
BaBar integrated lumi: 4.483 fb-1
(previous week: 3.98 fb-1)
Run 5b PEP delivery: 62.49 fb-1
Run 5 total delivery: 129.50 fb-1 Run 5 total BaBar recorded: 124.86 fb-1 including 9.82 fb-1 off-peak data
PEP activities this week:
Saturday 1st/Sunday 2nd : Abort kicker timing and vacuum
problem(pump) both fixed. They had a single fill for 22 hours. However
fill difficulties started on Sunday.
Wednesday 5th : NFTR problem; lumi ratio set to 0.98; UPS
work is done and the battery is ok. Will make sure that Jerry is
contacted by the pilot and not the UPS guy for the possible UPS work.
Thursday 6th : P5 recommanded to continue running Babar to
2008; PEP is trying to diagnose the aborts.
Wednesday 28th : new luminosity record at 11.24*10^33 (swing shift)
Thursday 29th : UPS work finished successfully; UPS is in
normal operation again (intervention of Jerry to disable the SOB dump valve and
prevent us from from any problem with SOB).
PEP activities planned next week :
On the next Tuesday after characterization off-peak data taking will start and last for one week.
Foreseen work opportunities (PEP down periods):
BaBar activities/issues this week:
See DIRC logbook for details
June 24th: IR2 paged Rolf because bin 11 in FX plot was too high (In
fact, just due due difficulties in injecting from PEP).
June 26th: UPS replacement. 2 problems occured:* DRC-MON did
not reboot properly (solved by Ray); * GMB status for the gaz system
showed a red zero (fixed by Matt).
June 29th: problem with HV crate 3, board #3, powering the 8
outer HV channels of sector 4. The decision was taken to replace the
board. Questions about how to deal with crate 3.
Downtime due to the DIRC: 17 minutes.
Background summary plot
- Matt out of town till July 12th
- Emmanuele is unavalable till July 18th
- Emmanuel finished his commissioner duty
- Nicolas is the new DIRC system manager (replacing Georges)