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)


BaBar-PEP news

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:

  • DIRC activities

    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

    Scheduled activities

    Pending Work

    Manpower situation