Shift summary for evening shift 8/16/99

Sasha Glazov (
Tue, 17 Aug 1999 00:06:26 -0500

Shift Summary for eve shift, 1999, August 16.

On Shift: AT, SG.

Hours of beam available at all intensities: ~7h 00min
Hours of beam available at nominal intensity: ~7h 00min
Hours of E832 data (special runs not included): 6h 25min
Hours of special runs (laser scans, muon runs...): 10min (mu-run)

Accounting of lost time: Tape change, muon run, run start, 4 kfrends
(2 at 2 run starts).

Runs ended this shift:
Run 14238 7.9M events - BEAM_832
Run 14239 385k events - BEAM_MUON

Tapes brought to FCC this shift:
(including tapes for online split)


QKA010-012, QKSM11, QKCC12, QKPE11, QKLA12, QKN022-023, QKNL20-21

Accesses during shift:

- None

Overview of shift:
E832 datataking, mu-run

Description of Shift:

Rather smooth data taking. Few problems with beam positions. ~ 90min
lost due to trevaton problems. (2 long periods of no beam, occasional

run spill time comment
14238 15:30 Shift starts - no beam
14238 73 16:03 Beam is back but off target. Called MCR,
80 16:11 Beam position is fine
16:32 MI PS problems. No estimate for beam.
127 17:15 Beam is back
142-145 Beam is off target again. Called MCR.
146 Beam position is fine.
14238 19:10 Tapes are full, run stops.
14239 19:23 Start muon run. 1 kfrend to start.
14239 19:32 Stop muon run
14241 19:44 Start E832 run. 1 kfrend to start.
Magnet polarity is positive.
21:27 Arun takes tapes to Feynman center.
14241 119-120 22:25 Lost permit --> kfrend --> Ok.
~23:00 Start tape labeling
~23:20 Triggers is not running. Kfrend fix.
~23:30 Stop tape labeling

Follow up Notes on Previous Shift

Items to Follow up on Next Shift
Label tapes. Take good data. (these are instructions from run coordinator).