Log entry time 21:47:06 on March 02, 2009

Entry number 264237

Summary for Mar 1 Swing - Mar 2 Day

Practically no data taking due to CHL recovery and cryomodule thermal cycling

Beam in Use

Shift	ABU	BANU	BNA
2009/03/01 Swing	3.05	0.30	4.65
2009/03/02 Owl	0.00	0.00	8.00
2009/03/02 Day	0.00	0.00	8.00
Total	3.05	0.30	20.65

Main events/issues:

• March 1
  • Beam quality continues to degrade. Very little usable data is taken.
  • Around 23:00, power glitches trip the CHL
  • These glitches also cause problems in the HRS, in particular we lose control to an IOC that controls the HV
• March 2
  • No beam while MCC is recovering
  • Replaced UPS powering network switch for HRS HV IOC.
  • Left HRS put in positive polarity for positron runs
  • No beam anticipated until Owl 3/3

Plans for the next couple of days:

• March 3 - Run through 5-pass positron kinematics
• Moller measurment after HRS polarity switch back to electron
• Take as much 5-pass production with goals of 50% complete data points until pass change
• Pass change will depend on the outcome of an appeal for extended running to be determined tomorrow afternoon. Without extension, we plan on changing Wednesday morning