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User name Yi Qiang
Log entry time 11:53:46 on October 18, 2009
Entry number 295485
This entry is a followup to: 295338
Followups:
keyword=RC Summary (Oct. 17 Day shift ~ Oct. 18 Owl shift)
RC Summary (Oct. 17 Day shift ~ Oct. 18 Owl shift)
Saturday, Oct. 17, Day shift
- Very smooth running at 98 uA.
- One run without any trip : 13344!
- 13:20-13:40 Beam quality degraded for a while: 295355/295353
Saturday, Oct. 17, Swing shift
- Production running at 98 uA.
- 17:45-18:11 15uA Compton test run, HAPPEX run: 13352
- 22:00 Left Q3 helium over 100%, no absolute solution: 295419
- 22:45-23:00 Compton DAQ locked up, rebooted and OK: 295418
Sunday, Oct. 18, Owl shift
- Production running at 98 uA.
- 02:26 Rebooted Compton CODA.
- 07:28 Put IHWP IN, start Slug 26
- 22:45-23:00 Compton DAQ locked up, rebooted and OK: 295418
Beam time
| Shift |
ABU |
BANU |
BNA |
| 2009/10/17 Day | 6.38 | 0.10
| 1.50 |
| 2009/10/17 Swing | 6.64 | 0.14
| 1.23 |
| 2009/10/18 Owl | 6.68 | 0.19
| 1.12 |
| Total | 19.7 | 0.43
| 3.85 |
Coulombs So Far
- We are currently on Slug # 26 (IHWP IN)
- Coulombs taken in all so far: 141.0 C as of Thursday 22:00
Concerns
- Please Halog Compoton rate with screen shot every two hours.
- Please always check online hists and compare them to the reference
ones.
- If you find something strange or wrong, please HALOG it so that the
expert can check it.
- Target Operator, please always check target PID system and strip
plots to make sure all the systems work.
- The cryo flow rate around 25.2g/s and JT value is around 55.5
since this is better for Lumi widths.
- The flow rate and JT value setting are sensitive to the outside
temperature. Hence the settings may change from morning to evening.
- Please be patient when you adjust the JT value since it may take a
few minutes to make the cryo flow rate stable.