Shift summary for owl shift 7/15/99

Robert Tschirhart (
Thu, 15 Jul 1999 06:51:40 -0500

Shift Summary for owl shift, 07/15/99

On Shift: Pat Toale, Bob Tschirhart

Hours of beam available at all intensities: 6h 15min
Hours of beam available at nominal intensity: 6h 15min
Hours of E832 data (special runs not included): 6h 05min
Hours of special runs (laser scans, muon runs...): 0

Accounting of lost time: Beam losses in Main Injector, minor DAQ probs.

Runs ended this shift:

Run 13911 - BEAM_832 (443K events) tape change.

Tapes brought to FCC this shift: QK*131-133, QKB045

Accesses during shift: none

Overview of shift: 832 data taking at ~6.8 E12

Smooth shift, occasional ktevana errors, HCC inefficiency warnings.

Description of Shift:

run spill time comment
13911 00:43 Tapes are full. This run stops. We load a new
tape set, QK*134-136, QKB046.

13912 00:49 Fresh start, start beam832 run 13912 with updates
to the banana monitoring code.

13912 00:10 Intensity exceeds 7.1E12, we call MCR for trim.

13912 00:45 Onsplit mount request for QKNL11 serviced.

13912 02:45 Ghost message from pipeline frequently occurs,
fixed later with a reboot of pipeline crate #03.

13912 04:00 New Banana maps functioning properly with new
time offsets. Monitoring is still messed up,
and will be updated soon with a fix.

13912 05:15 CsI channel 3114 has an unusually large E/P (1.08)
not due to low electron statistics. Laser data
for this channel looks ok. This channel should
continue to be monitored.

13912 05:30 Onsplit mount request for QKCC06 serviced.

13912 06:10 Getting DAQ deadtime of 0.5->2.0 seconds/spill
sometimes. Not associated with high intensity
spills, not clear what is causing it.

13912 06:15 Investigating beam losses in the Main Injector,
No Estimate.

13912 06:20 Pipeline crate #03 rebooted. This seems to have
fixed ghost status messages from pipeline system.

Follow up Notes on Previous Shift

We followed the orders of not flipping the analysis magnet field and
not doing a muon run.

Items to Follow up on Next Shift

Keep an eye on the E/P (csigain) of CsI 3114.