Log entry time 19:12:18 on February 22, 2009

Entry number 262711

This entry is a followup to: 262534

Followups:

• 262716 02/22/09 19:54 V. Sulkosky Experiment Summary for Feb 18, Swing - Feb 19, Swing

Summary for Feb 21 day - Feb 22 day

Smooth data taking.

Beam in Use

shift	ABU	BANU	BNA
2009/02/21 day	6.33	0.51	1.17
2009/02/21 swing	7.23	0.20	0.57
2009/02/22 owl	7.34	0.14	0.53
2009/02/22 day	4.11	0.12	3.75
total	25.0	1.0	6.0

Main events/issues:

• February 21^st
  • Transverse production
  • 14:40 Completed kinematic H: P_lhrs = 1.27 GeV/c, 45^o.
  • 15:00 Began kinematic F: P_lhrs = 1.13 GeV/c, 45^o.
  • Smooth Production the rest of the day.
  • Average target polarization: ~ 61.8% from day shift 2/21 through swing shift 2/21.
• February 22^nd
  • 10:45 Completed kinematic F: 0.85 C out of 0.86 C.
  • 10:55 Start kinematic D: P_lhrs = 0.9 GeV/c, 45^o.
  • 12:49-15:37 No beam due to injector and North LINAC dropped out of HV
    then after restoration no beam due to 1L16 HPA amplifier fault.
  • 15:37-16:00 Beam restored and beam profile checks begin.
  • Average target polarization: ~ 61.7% from owl shift 2/22 through day shift 2/22.

Plans for the next day:

• Production for kinematic D.
• At 18:00 target spin rotation to longitudinal.
• Longitudinal production running during kinematic D on left HRS.
• February 23^rd from 09:00 to 13:00
  • RF recovery
  • Controlled access to investigate BigBite shower hardware
  • Pass change to fourth
  • Target spin rotation to transverse
• Begin unpolarized production at 4^th pass for left HRS.