Log entry time 20:52:51 on March 22, 2004

Entry number 80009

Run Coordinator's Report - Swing 21 March to Day 22 March 2004

Summary

• Continued taking 40 uA on LH2 overnight.
• Performed a spin dance on day shift to determine good longitudinal and transverse beam polarization settings (79980, 79972, and 79983).
• Ended day shift tuning up for production running with transverse beam.

Concerns and Resolutions

• More strangeness with the beam positions this afternoon while tuning up for transverse running (79986). Beam positions are dead on are specs at all four BPMs except Y on 3H00C which is off by more than 0.5 mm. Have opted to ignore this BPM for now.
• Target FSD box has failed multiple times necessitating trips into the hall to power cycle it. In the short term, the FSD box has been plugged into the same remote reboot module as the Musson box so that now it can be power-cycled remotely at the cost that it takes the Musson box with it (79979).
• In the continuing quest to improve the statistical qualities of French detectors 13 and 14, Jacques replaced the VXI crate containing the French electronics (79884).

Plans

The plan is to run various combinations of transverse Wien angle settings, half wave plate states, and targets for the remainder of the week. This assumes that we can get feedback operational in the transverse mode. Transmission and beam current are both excellent with transverse beam. Various accelerator troubles have prevented us from completing feedback calibration.

If we are unable to establish good transverse running then we will go back to longitudinal beam.

Summaries and ABUs

• Sunday Swing: Summary and ABU
• Monday Owl: Summary and ABU
• Monday Day: Summary and ABU