shift summary for OWL, June 17, 1999

Alexander Ledovskoy (ledovsko@fnpxsr)
Thu, 17 Jun 1999 06:57:07 -0500

Shift Summary for OWL shift, 17-June-99

On Shift: D. Jensen
S. Ledovskoy

Hours of beam delivered at all intensities: 7h
Hours of beam delivered at nominal intensity: 7h
Hours of E832 data (special runs not included): 5.75h
Hours of special runs (laser scans, muon runs...): 0.5h

Accounting of lost time:

drt_fresh_start, switching to and from muon mode, - 0.75h

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Runs ended this shift:

13632 1.4M (V*MU2) events BEAM_MU_4E12

Tapes brought to FCC this shift:

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Accesses during shift:

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Overview of shift:

Muon run, E832 data taking

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Description of Shift:

run spill time comment
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0:00 RickF finished beam studies. We switch to Muon Mode
but have difficulties to stop previous run gracefully.

13632 0:22 Muon run started
0:45 Run stopped, Run Control hangs. Do l3#save
Flip NM4AN to POS polarity
Do drt_fresh_start
Run Control gives 13634 as a number of the next run
(it skips 13633 !)
Elizabeth add +10V to REG ch 72 and 145

13634 1:15 BEAM_832 started.

4:10 D.J. replaces CO2 gas bottle in DC rack

4:25 /ktev1a is 98% full alarm
deteled few /ktev1a/data/VETO/HOLEMUXXXXX.dat files

149 4:40 "Time to panic" alarm
CSI 1564 Laser stab RMS is 30.6%
Back to normal on next spill

6:05 /ktev4a is 98% full alarm
deteled few /ktev4a/data/VETO/HOLEMUXXXXX.dat files
6:07 /ktev2a is 98% full alarm
deteled few /ktev2a/data/VETO/HOLEMUXXXXX.dat files

6:10 ONLINE SPLIT button "CACHER" turns red

"CACHER" turns green
6:15 ONLINE SPLIT button "TAPE" is red:
"Unused tape tps3d2 on host ktev4 is allocated"
Strange, there is no tape there since midnight,
if not longer.
6:25 One more red button in ONLINE SPLIT window:
"Unused tape tps3d2 on host ktev2 is allocated"
6:30 One more red button in ONLINE SPLIT window:
"Unused tape tps3d2 on host ktev1 is allocated"

6:35 No Beam
6:39 Beam is back

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