WAC Notes August 18 2020

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WAC Notes August 17 2020 << >> WAC Notes August 19 2020

August 18 2020

Daily Meeting BlueJeans

Production Run List - Slug 194 - IHWP OUT - Flip-RIGHT

• Good - Run 7807 - Looks good. Global cut ATs for this run, as there is a clear spike in ATL1. Cut out > 0.0 and < -1.5 mm BPM 12X
• Good - Run 7808 - Looks good. Cut out > 0.0 and < -1.5 mm BPM 12X
• Good - Run 7809 - looks good. Coming back from a downtime
• Good - Run 7810 - Looks good. Add BPM 12X cut out > 0.5 mm, < -1.0
• Good - Run 7811 - looks good. Cut out BPM 12X < -1.0, > 0.5
• Good - Run 7812 - Needed to cut BPM 12X < -1.0, > 0.5
• Good - Run 7813 - Needed to cut BPM 12X < -1.0, > 0.5
• Good - Run 7814 - Needed to cut BPM 12X < -1.0, > 0.5
• Good - Run 7815 - Looks Good
• Good - Run 7816 - Needed to cut BPM 12X < -1.0, > 0.5
• Good - Run 7817 - Looks Good

Production Run List - Slug 195 - IHWP IN - Flip-RIGHT

• Good - Run 7835 - Energy lock wasn't engaged but seems good.
• Good - Run 7836 - Needed to cut trailing events after 260 K. This run contains two distinct bpm12X response regions.
• Good - Run 7837 - Cut out events bpm12X<-0.5 and >1.0.
• Good - Run 7838 - Cut out events bpm12X<-0.5 and >1.0. Also cutting out between 200K and 250 K to cut out a period with excessive beam motion.
• Good - Run 7839 - Cut out events bpm12X<-0.5 and >1.0.
• Good - Run 7840 - Short run. Keeping for now.

Issues

• Running with FFB off
• Removed BPM Y burp cuts (again, retroactively)
• BPM 12X (and all monitors) see regular short spikes (still) - it seems to be getting worse
  • https://logbooks.jlab.org/entry/3829654
  • https://logbooks.jlab.org/entry/3829658
  • https://logbooks.jlab.org/entry/3829667
• BPM Noise issues
  • BPM 12X jumps are hard to cut - Robert is working on a 12X burp cut estimate for that
  • BPM Y has noise when burp cut is off, but it doesn't seem to negatively impact asymmetry or detector yields, and is smaller than target size
  • BPM Y burp cut ON kills BMOD coil 6

Updates

• BMOD tune seems OK.