Log entry time 19:54:13 on February 22, 2009

Entry number 262716

This entry is a followup to: 262711

Followups:

• 263006 02/23/09 22:12 V. Sulkosky Experiment Summary for Feb 22, Swing - Feb 23, Day

Summary for Feb 18 swing - Feb 19 swing

Smooth data taking.

Beam in Use

shift	ABU	BANU	BNA
2009/02/18 swing	4.47	1.91	1.64
2009/02/19 owl	7.11	0.26	0.63
2009/02/19 day	6.31	0.2	1.47
2009/02/19 swing	5.65	1.45	0.89
total	23.6	3.8	4.6

Main events/issues:

• February 18^th
  • Resume transverse production
  • 16:00-16:20 Controlled access to fix Moller power supply
  • 16:22-17:22 Beam profile check
  • 17:22-17:45 BigBite trigger check
  • 17:50-19:55 Reference cell runs (hydrogen)
  • 19:55-20:20 Test runs for Bogdan Wojtsekhowski
  • 20:20-22:35 Reference cell runs (nitrogen)
  • 23:30 Began kinematic J: P_lhrs = 1.42 GeV/c, 45^o.
  • Target polarization: ~ 63.3% on swing shift 2/21.
• February 19^th
  • Transverse production for kinematic J.
  • Raised BigBite T6 threshold from -120 mV to -133 mV starting with run 1600.
  • 20:00-22:40 Beam tuning for Moller and Moller measurement: 74.5%.
  • 22:40-24:00 Beam tuning after Moller.
  • 24:00 Resume production.
  • Average target polarization: ~ 62.9% from owl shift 2/19 through day shift 2/19.

A copy of this log entry has been emailed to: brads,jpchen,jiang,meziani,choi