DIRC Operations Weekly Report
Period: Saturday 2006/07/15 - Friday 2006/07/21
Oncall: Jerome Bequilleux
Fast Monitoring: Rolf Andreassen, Jerome Bequilleux
File location: $BFROOT/www/Detector/DIRC/WeeklyReports/report_20060721.html
Plot directory: $BFROOT/www/Detector/DIRC/WeeklyReports/Plots/report_20060721 (empty)
PEP peak lumi: 11.2*1033
(previous week: 10.2*1033)
BaBar integrated lumi: 3.13 fb-1
(previous week: 3.98 fb-1)
Run 5b PEP delivery: 62.49 fb-1
Run 5 total delivery: 132.63 fb-1 Run 5 total BaBar recorded: 127.93 fb-1 including 9.82 fb-1 off-peak data
PEP activities this week:
PEP activities planned next week :
Foreseen work opportunities (PEP down periods):
BaBar activities/issues this week:
logbook for details
Matt disabled/enabled the SOB dump valve to prevent any problem during
Wiener crates' temperature:
recurrent yellow alarms with the "inlet" temperature of Wiener crate in sector
2. The pilot masked the alarm (seems it became more and more
persistent since Friday 14th). Correlations with hot weather.
new yellow alarms due to inlet Wiener crate temperatures for sectors 4
and 5. Yellow alarm thresholds are moved from 33 to 34 degrees for
sector 2,4,5; the alarm on ALH is unmasked for sector 2.
-strange behavior of Wiener
crates temperatures: 3 temperatures are monitored for the
Wiener crates: Inlet temp.(= temp. of the air before cooling the
crate), Bin temp. (= temp. of the air after it cooled the crate)
and PS temp. (=temp. of the power supply). We expect "Tinlet < TBin" (seen
for Wiener crates of EMC and DCH), but the opposite is found for the
DIRC (remaining possible explanation: role of the 3 added fans+position of the sensors)...
SOB water level:
Water level in the SOB tank is slighly above the upper the max. level
allowed (green bar taped on the tank). Contacted Jerry and Matt, but
thinking it is linked with temperature.
Jerry confirmed the high water level in the SOB tank is due to the hot weather.
Background summary plot