Shift Summary for Owl, Sept.10, 1999

Angela Bellavance (
Fri, 10 Sep 1999 07:11:02 -0500 (CDT)

Shift Summary for owl shift, 10/Sep/99

On Shift: S.Taegar, A.Bellavance

Hours of beam delivered at all intensities: 4.9/7.0
Hours of beam delivered at nominal intensity: 4.9
Hours of E832 data (special runs not included): 4.7
Hours of special runs (laser scans, muon runs...): 0

Accounting of lost time: difficulty initing run, trigger errors

Runs ended this shift:
Run 14488 - 13M events - BEAM_832
Run 14489-90 - Flops
Run 14491 - ongoing - BEAM_832

Tapes brought to FCC this shift: QKB144,
(actually this mission was entrusted to the day shift)

Accesses during shift: none

Overview of shift: E832 datataking, fixing the DAQ, 832 tape labelling,
thumb twiddling,...

Description of Shift:

run spill time comment
14488 119 00:00 Taking data. Muon run already done for tonight.
124 Beam gone one spill.
02:48 See problem with kq# and ban# kumacs. Page JasonL
who says he'll look into it. (Red 2X-3 Bn and
2X-1 Bn and frowny on spottiness plot).
Also note that lsr# and fpedcal# have no reference
plots in the book.
263 03:14 Beam goes away after getting worse over the last
~10 spills.
03:20 Ch.13: Booster injection probs. Est 15 mins.
03:46 Ch.13: Booster injection power supply failure.
Est. 1 hour.
03:49 Tapes are 83.6% full. Decide to stop run and load
fresh tapes.
14489 Run init fails because sleepy Angela forgot to
close a tape drive door. Do a drt_fresh_start.
14490 Run hangs during "start"; not sure of problem.
Do a drt_fresh_start.
04:54 Beam returns and we're not ready! Argh!
05:02 Abort at A2. Beam goes away.
14491 1 05:09 Start run, but now no beam.
05:18 Ch.13: TeV quench protection system problem.
Est. 20 minutes.
Meanwhile: Triggers hang because of 3X KQ DYC Busy ->
reloaded L2Proc:Kumquat. Then they hang with a
crate 53 AZLAT busy -> replug command cable on
UCLA scaler which had req light on. Then pipeline
errors -> reset pipeline.
05:34 We are back alive! (And just in time :)
20 05:35 Beam returns!!
22-23 Beam gone two spills.
46 Ktevana errors - KFRENDs.
56 06:24 Ktevana errors - KFRENDs.
76-77 06:50 Beam gone a couple spills. Greg shows up early
for his day shift. Wow!
07:07 Page the absent Arun; he's on his way.
07:10 Ed shows up. We decide to hand off to him and

Follow up Notes on Previous Shift

Items to Follow up on Next Shift

Whoever is in charge of "lsr" and "fpedcal" plots needs to get them into
the newest reference plotbook.

For Sydney, Angela

Angela Bellavance work: (630) 840-4144 home: (630) 548-3412 page: (630) 722-6861
"It has yet to be proven that intelligence has any survival value."
- Arthur C. Clarke