Shift Summary: 12/13 Owl

Jason LaDue (jladue@cuhep.Colorado.EDU)
Mon, 13 Dec 1999 06:10:26 -0700 (MST)

Shift Summary for owl shift, 12/13/99

On Shift: U. Erkarslan, J. LaDue

Hours of beam available at all intensities: 4.25
Hours of beam available at nominal intensity: 0.00
Hours of E799 data (special runs not included): 3.00
Hours of special runs (laser scans, muon runs...): 0.50

Accounting of lost time:
Accelerator problems with MULAM and Booster Water leak, then
problems getting the beam stop closed (Rad Monitor Trip). Starting and
stopping Runs, KFRENDS, etc.

Runs ended this shift:

Tapes brought to FCC this shift:

Accesses during shift:
Access to remove the Regenerator.

Overview of shift:

Beam intensity is not optimal, but at least there is beam.
Typical intensity fluctuated between 7.0E12 and 8.3E12. Lots of SCALER
alarms going off because of poor beam quality.
Description of Shift:

run spill time comment
15209 00:13 Muon run started

00:22 MULAM trips cause beam to go away

02:15 Beam returns at low intensity

02:24 Muon run stopped

02:35 DCGM and DCT0 constants updated

02:40 BobH and JRL go in to pull regenerator

02:55 Out of access

03:09 Problem with A-Loop Interlock, no beam to us

15210 03:00 Pedestal Run started.

03:19 Beam returns.

15211 03:36 BEAM_799 run started, many KTEVANA errors,
Missing FFFF word Stream 6. Put Crate 15
in KFREND list and all works.

04:17 HCC channel 2803 is very ineffecient. Reload
ETOT and HCC it gets better.

94-5 05:41 Pipeline and KTEVANA errors, Init, KFREND, KFREND
reset laser repeater, KFREND, KFREND, reset
repeater, KFREND, KFREND.

06:17 HCC channel 1767 now is really inefficient, page
Jason H, decide to keep an eye on it for now.

Follow up Notes on Previous Shift
SA3 looks fine.
Ed is happy with CsI for now.
DC constants updated.
Muon and Pedestal run taken.

Items to Follow up on Next Shift
CsI 2081 has a large gain drift(~5%), keep an eye on it.
HCC channels 2803 and 1767 were both highly inefficient
during the run, watch to make sure that they aren't getting worse,
experts have been notified.