Log entry time 19:27:08 on February 21, 2009

Entry number 262534

This entry is a followup to: 262525

Followups:

• 262538 02/21/09 19:41 V. Sulkosky Re: Experiment Summary for Feb 17, Day - Feb 18, Day
• 262711 02/22/09 19:12 V. Sulkosky Experiment Summary for Feb 21, Day - Feb 22, Day

Summary for Feb 17 day - Feb 18 day

Beam studies and longitudinal production.

Beam in Use

shift	ABU	BANU	BNA
2009/02/17 day	0.00	0.00	8.00
2009/02/17 swing	2.76	4.29	0.95
2009/02/18 owl	6.97	0.43	0.60
2009/02/18 day	5.17	0.56	2.27
total	14.9	5.3	11.8

Main events/issues:

• February 17^th
  • 08:00-14:00 Beam Studies and controlled access.
  • Controlled access: magnet work, BigBite Cerenkov flash ADC implementation
    and replacement of Moller power supply.
  • Target spin rotated to longitudinal.
  • 14:00-16:00 Beam restoration and set up for BCM calibration.
  • 16:00-17:00 BCM calibration.
  • 17:00-18:30 Beam profile and raster check.
  • 18:30-19:00 Controlled access for BigBite Cerenkov work.
  • 19:00-19:30 Beam restoration and profile check.
  • 19:30-19:40 DAQ tests.
  • 19:40-21:15 N2 reference cell run and start of longitudinal production.
  • 21:15-23:00 Controlled access for DAQ work.
  • 23:20 Resume longitudinal production and continue
    kinematic L: P_lhrs = 1.6 GeV/c, 45^o.
• February 18^th
  • 02:15 beam half-wave plate inserted.
  • 06:00 beam half-wave plate removed.
  • Average target polarization: ~ 58.0% from swing shift 2/17 through owl shift 2/18.
  • Total accummulated charge for kinematic L: 1.0 C out of 1.30 C.
  • Total accummulated charge for longitudinal production: 0.38 C out of 0.65 C.

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