Log entry time 08:07:44 on April 21, 2012

Entry number 377030

Summary

00:10 Beam Position Scan Done. Acceptance study Part I started.

00:40 Acceptance study part I finished. Delta scan started.

03:40 Delta scan done. Student expert tested the rasters while R-HRS settling.

04:30 Pointing study finished. Asked MCC for escorted access to move the sieve out.

05:00 Sieve out.

05:20 Beam back. Acceptance study part II. Energy has shifted from 1.151 to 1.157 GeV.

05:40 Optics Done. Move to production(R) / Packing fraction(L). Taking bottom cell.

06:05 L-HRS VDC HV tripped during the configuration change. Recovered.

06:30 Left Septum tripped and not recovering. We are running

07:45 Asked for access to reset L-Septum.

08:00 Waiting for access.

Run List

• Acceptance Study Part I, Sieve IN, C12_40, P0 = 1.1571
  • 4739 / 23653 : Rasters ON, 0.8 M
  • 4740 / 23654 : Rasters OFF, 0.3 M (take these as 0% delta scan)
  • 4742 / 23656 : Rasters OFF, 0.3 M (take these as 0% delta scan)
• Delta Scan, Sieve IN, C12_40
  • 4740, 4742 :  0% / 1.1571 GeV
  • 4743, 4744 :  1% / 1.1454 GeV
  • 4745, 4746 :  2% / 1.1339 GeV
  • 4747, 4748 :  3% / 1.1223 GeV
  • 4749, 4750 :  4% / 1.1107 GeV
  • 4751, 4752 : -4% / 1.2033 GeV
  • 4753, 4754 : -3% / 1.1917 GeV
  • 4755, 4757 : -2% / 1.1801 GeV
  • 4758, 4759 : -1% / 1.1686 GeV
  • 23654, 23656 :  0% / 1.1571 GeV
  • 23657, 23658 :  2% / 1.1339 GeV
  • 23659, 23660 : 3.5% / 1.1165 GeV
  • 23663, 23664 : -3.5% / 1.1975 GeV
  • 23669, 23670 : -2% / 1.1801 GeV
• (Optional) Raster Study (while R-HRS taking delta scan)
  • 4760-4771
• Pointing, Sieve IN, CH2, P0 = 1.1571
  • L-HRS : 4772-4774
  • R-HRS : 23676-23678
• Acceptance Study Part II, Sieve OUT, C12_40, P0 = 1.1571
  • 4777, 4778 / 23681, 23682 : Rasters OFF
  • 4779, 4780 / 23683, 23684 : Rasters ON
• Packing Fraction on Left P0 = 1.1511
  • 4781, 4782
• Dilution on R-HRS only
  • 23685, 23686 : Home Target
  • 23687 : Dummy
  • 23688, 23689 : C12_40