Weekend Summary

1
Weekend Summary

• Squirted N2 at 3027 under various conditions
• Trying to use as calibration for event pressure
  timing profiles
• Moved PR02-204x LER collimator
• no significant change of trip threshold
• Measured HOM power in absorbers
• Q2BLW and IR4, IR 8
• Heated up NEGs PR02-3025,-8020, 3022
• 3022 shows interesting effect on her beam size
• Took single-beam LER data up to 2450 mA
• 1st-time LER instability with large vacuum event
  in IR 2
• BaBar threshold 15x normal
• Ran with low abort rate at 1700 on 1070 mA
• trip threshold seems to have gone up since 3027
  plenum removal

2
(Spec.-) Lumi Tuning!
3
Recent Delivery

• Run 5b total 21.1/fb