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User name horn
Log entry time 08:03:13 on October21,2010
Entry number 335923
keyword=Owl shift summary
OWL SHIFT SUMMARY 10/22/2010
----------------------------
SHORT SUMMARY:
Completed the target boiling study with 15cm LH2, Al dummy, and carbon targets, then continued with dvcs production runs. Found four calorimeter channels missing (see halog #335911).
DETAILED SUMMARY:
0:00 Harp scan 1H04A/1H04B (result~150x150um, see elog#1548545 for details)
0:30 Start boiling study with 15cm LH2, Al dummy, Carbon targets
Settings: LHRS at 21.5 deg, pnom=2.591 GeV/c
DAQ set to LHRS and ps3=1, others zero
Beam positions empty BPMA(0.02, -0.05), BPMB(-0.02,-0.01)
Calorimeter HV off
4:30 Back to DVCS production running
Settings: LHRS at 21.5 deg, pnom=2.591 GeV/c
DAQ set to DVCSTopBot
BPMA(0.05, -0.04), BPMB(0.03,-0.01)
Calorimeter HV on
7:00 A. Camsonne is checking missing calorimeter channels. Stopped run.
7:40 resume production runs
7:50 started production run 7665
RUN SUMMARY:
Run Target Current Raster T3 Rate Comment
Boiling study runs
7639 LH2 4.5uA none 1 kHz Beam trip
7640 LH2 4.5uA ~ ~
7641 LH2 4.5uA 4x4 ~
7642 LH2 4.5uA 2x2 ~
7643 LH2 3.1uA 2x2 0.7 kHz
7644 LH2 3.1uA 4x4 ~
7645 LH2 3.1uA none ~
7646 LH2 1.6uA none 0.37 kHz
7647 LH2 1.6uA none ~
7648 LH2 1.6uA 2x2 ~
7649 LH2 1.6uA 2x2 ~
7650 LH2 1.6uA 4x4 ~
7651 LH2 1.6uA 4x4 ~
7652 Al 4.6uA 4x4 0.74kHz
7653 Al 4.6uA 4x4 ~
7654 Carbon 10uA 4x4 0.29kHz
7655 Carbon 10uA 4x4 ~
7656 Carbon 6.7uA 4x4 0.19kHz
7657 Carbon 6.7uA 4x4 ~
7658 Carbon 3.2uA 4x4 0.093kHz
7659 Carbon 3.2uA 4x4 ~
Production runs
7660 LH2 1.0uA none 196k events
7661 LH2 1.0uA none 190k events
7662 LH2 1.0uA none 185k events
7663 test run
7664 LH2 1.0uA none 180k events
7665 LH2 1.0uA none