Log entry time 18:45:49 on February 26, 2009

Entry number 263544

This entry is a followup to: 263312

Followups:

• 263668 02/27/09 09:31 V. Sulkosky Experiment Summary for Feb 26, Owl - Feb 26, Swing

Summary for Feb 25 owl - Feb 25 swing

Smooth data taking at fourth pass.

Beam in Use

shift	ABU	BANU	BNA
2009/02/25 owl	7.34	0.06	0.61
2009/02/25 day	5.10	2.25	0.64
2009/02/25 swing	7.36	0.07	0.55
total	19.8	2.4	1.8

Main events/issues:

• February 25^th
  • Production on kinematic 4J: P_lhrs = 1.51 GeV/c, 45^o.
  • VESDA alert getting worse, four indicators blinking red at the alert level.
  • 09:00-11:20 Controlled access to investigate cause for VESDA alert.
    • Compressor turned off during access.
    • By end of day shift, alert levels improved significantly.
  • 11:20 Resume production on kinematic 4J.
  • Continue production on kinematic 4J to the end of swing shift.

Plans for the next couple of days:

• Production for kinematic 4J and 4C until 9 am on February 26^th.
• February 26^th from 09:00 to 15:00
  • Beam studies
  • Controlled access for spectrometer magnet work
  • Pass change to 5^th, wien angle to 30^o
• Resume polarized production at 5^th pass.