WAC Notes July 17 2019

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PREX Main << Weekly Analysis Coordinator << Instructions

July 17 2019

• WAC = Cameron Clarke
• Slug 3
• Beam Status
  • OWL had ~7 hours of beam, with some sketchy BPM noise and clear BCM DD problems

Production Run List (status at 3pm 7/17/2019)

• Needs Cuts: 3398
• Suspicious (BPM 4e noise): 3399
• Suspicious (BCM DD, BPM 4e noise): 3400
• Suspicious (BCM DD, BPM 4e noise): 3401
• Suspicious (BCM DD, BPM 4e noise): 3402
• Suspicious (BCM DD, BPM 4e noise): 3403
• Suspicious (BCM DD, BPM 4e noise): 3404
• Suspicious (BCM DD, BPM 4e noise): 3405
• Suspicious (BCM DD, BPM 4e noise): 3406
• Suspicious (BCM DD, BPM 4e noise): 3407

Issues

• [ HALOG] - Charge Feedback glitch:
• [ HALOG] - OPS FFB on: for a few minutes of run 3398
• [ HALOG] - BCM Noise/phase lag question: Begins run 3400, varies, investigated on scope, looks like BCM black box issue
• [ HALOG] - BPMs have strange noise, especially 4eY: Beings run 3399
• [ HALOG] - Compliment BPMs don't have this noise (anecdotal), and their DDs w.r.t. normal BPMs is noticeable
• [ HALOG] - At Left 1 is - w.r.t. At Left 2, and this isn't mirrored in Right:
• [ HALOG] - Main Detectors R vs. L correlations shift in time?

Other Status Updates

• [ HALOG] - Beam Mod is OK
• [ HALOG] - Aq is working, nothing more than ~0.2 ppm mean charge asymmetry over a given run, many sub 0.02 ppm