Log entry time 17:36:04 on March 25, 2004

Entry number 80372

Run Coordinator's Report for 23 March Swing to 25 March Day

Summary

We have continued to take data with transversely polarized beam on LH₂ and Al frame targets. This program will conclude tomorrow and we will return to normal, longitudinally polarized running.

Significant News

• We have resumed (as of Tuesday swing) taking 4 hours of GMS data every day.
• There was a fast dump of the SMS Wednesday owl (80177)caused by the failure of a PLC analog output module (80201). During the access to correct this, the problem with the target vacuum PV12 interlock was fixed (80201).
• The target FSD box can now be rebooted from the reboot panel GUI (80206). This should save a trip into the hall when the box gives false FSD faults.
• Have had a fair amount of trouble getting beam feedback functional during transverse running, particularly when running on the target frame (due to the reduced beam current). Time constraints have prevented us from performing full RIP scans to recalibrate devices as needed. Most of the time Kaz has succeeded in nursing the feedback along.
• Tomorrow we will perform a micro spin dance with two goals: spot check that we are still at a zero crossing in the longitudinal polarization (i.e. the beam is transverse) and optimize the Wien setting for longitudinal polarization running. As a part of this procedure the MCC will perform a Mott measurement.

Plans

1. Take data on LH₂ overnight (IHWP is IN).
2. 08:00 => Set up the Moller in preparation for the micro spin dance.
3. 09:00 - 13:00 => Perform micro spin dance and tune longitudinally polarized beam into the hall.
4. 13:00 - 14:00 => RIP scan and feedback device calibration.
5. 14:00 - 16:00 => BCM/BPM calibration?
6. 16:00 => Resume normal asymmetry running.

Concerns

• Non-statistical widths in detectors 13 and 14 of octants 4 and 8
• Elevated Silviu ratio in detectors 1 and 2 of octants 2 and 6
• Spikes in French electronics
• Apparent increasing frequency of NA LTD errors
• Crosstalk with target IOC and target FSD box when the Musson box is rebooted remotely
• Changed behavior of BPM 3H00C Y position with respect to other hall BPMs

Shift Summaries and BTA Reports

• Tuesday Swing: Summary and BTA
• Wednesday Owl: Summary and BTA
• Wednesday Day: Summary and BTA
• Wednesday Swing: Summary and BTA
• Thursday Owl: Summary and BTA
• Thursday Day: Summary and BTA