16/Sep/99 Evening Shift

Peter Shanahan (shanahan@fnal.gov)
Fri, 17 Sep 1999 00:16:36 -0500

Shift Summary for eve shift, 16/Sep/99

On Shift: Ricardo Barbosa, P. Shanahan

Hours of beam available at all intensities: 0
Hours of beam available at nominal intensity: 0
Hours of E799 data (special runs not included): 0
Hours of special runs (laser scans, muon runs...): 2

Accounting of lost time:

Switchover from E832 to E799, continued

Runs ended this shift:
Run 14540 - DBC timing scan
Run 14550 - LASER SCAN

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


Accesses during shift:

Open Access for most of shift.

Overview of shift:
E.g., Switchover stuff

Description of Shift:

run spill time comment
15:30 SCALER_CHECK limits for E799 modified (BT)
15:45 ET Chilled water + LV back on (ST,JCH)
16:00 VV' HV turned on. Light leak found + fixed (VJ,SL)
16:15 TRD HV turned on (VJ)
16:50 REG moved to "way out" position. (DJ). NM3 gate
valve opened: ion guage jumps to 80 uTorr. Closed.
17:32 Collimator jaws opened to 2cm x 2cm (BT,EB)
17:35 2 new Ar/Ethane bottles online on east side.
18:05 Crash buttons enabled on NM4AN (BT, DJ)
14540 18:25 End DPMT timing scan (PSh)
18:30 1/2ns delay added to ET RF delay (total=9.5ns) (JCH)
21:00 New DBC control words installed (PSh)
21:10 Vacuum techs leak checked NM2+NM3. No leak found.
They suggest it might be moisture from collimator
22:15 Search and secure. Gate valve opened (PSh). Ion
gauge jumps to 60uTorr, and decays to 40 uTorr. DJ
says this is OK for beam.
23:59 Vac/cryo problems at E12. At least 1hour for beam.

Follow up Notes on Previous Shift

Items to Follow up on Next Shift

Don't page Jason L. for frowny bananas. He'll fix it tomorrow.
Page Bob T, Sasha L, Arun. when muons are 30 minutes away.