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User name Yi Qiang
Log entry time 10:32:53 on October 21, 2009
Entry number 295956
This entry is a followup to: 295827
keyword=RC Summary (Oct. 20 Day shift ~ Oct. 21 Owl shift)
RC report (Oct. 20 Day shift ~ Oct. 21 Owl shift)
Tuesday, Oct. 20, Day shift
- Production running at 98 uA.
- 11:50 Put IHWP IN, start Slug 28 since run 13398: halog
295834.
- 11:50-12:15 Dedicated run 13432 at 50uA for HAPPEX detector
linearity tests.
- 14:40-16:10 Beam off for MCC to replace a bad power supply in south
linac.
Tuesday, Oct. 20, Swing shift
- Production running at 98 uA.
- 20:27-20:58 15uA low current run for Compton coincidence and HAPPEX
detector linearity tests.
- 21:06 Power outage throughout the accelator site, everything down,
ESR and target vented.
- 23:00 Power is back.
Tuesday, Oct. 21, Owl shift
- No beam throughout the shift, recovering from the outage.
- 04:45 All magnets are back on cold return
Beam time
| Shift |
ABU |
BANU |
BNA |
| 2009/10/20 Day | 6.02 | 0.27
| 1.72 |
| 2009/10/20 Swing | 3.89 | 0.33
| 3.78 |
| 2009/10/21 Owl | 0.00 | 0.00
| 8.00 |
| Total | 9.91 | 0.60
| 13.5 |
Coulombs So Far
- We are currently on Slug # 28 (IHWP IN).
- Coulombs taken in all so far: 165.5 C as of Tuesday 09:00
10/20/2009.
Concerns
- 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.