WAC Notes January 11 2020

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WAC Notes December 15 2019 << >> WAC Notes January 12 2020

January 11 2020

Daily Meeting BlueJeans

Production Run List - Slug 107 - IHWP OUT - Flip-RIGHT - Production

• Good - Run 5636 - Ca48 150uA - very messy beam, otherwise OK small amount of data - Looks good, even with low quality beam - low avg current, so large RMS, but it's real
• Good - Run 5637 - Added a > 0.3 4eX cut
• Good - Run 5639 - Cut out beam excursions at 0-50k and 225k-370k, otherwise OK
• Good - Run 5640 - The y position has some noisy tails, but not so far away from the center to be a concern (only 0.4 mm)
• Good - Run 5641 - beam excursions, cut out 60k-80k, and 300k-325k. The y position has some noisy tails
• Good - Run 5642 - The y position has some noisy tails
• Good - Run 5643
• Good - Run 5644

Production Run List - Slug 108 - IHWP IN - Flip-RIGHT - Production

• Good - Run 5645 - beam excursion trip cut out 130k-180k, otherwise everything is back to normal :) Slug 108 begins now
• Good - Run 5646 - Cameron: LQ1 trip from 200k onward. Beam motion at 0-25k. Otherwise Good
• Good - Run 5648 - The y position has some noisy tails
• Good - Run 5649 - looks good, cut out 80-150k due to excursion
• Good - Run 5650
• Good - Run 5651 - Large Aq... OK
• Good - Run 5652
• Good - Run 5653 - Current ramp, useful as data

Production Run List - Slug 109 - IHWP IN - Flip-RIGHT - Production

• Good - Run 5655 - Cut at 150k-170k to remove beam motion (caused by 120 uA running)
• Good - Run 5656

Non-Production Runs and Bad Runs

• Good - Run 5647 - LQ1 cycling now - bad

Pedestal/Calibrations Updates

• https://docs.google.com/spreadsheets/d/1mt39fCuIW3Pr8TO7fzhtFjmMFt4Op30jMm5wMQke6Xo/edit?usp=sharing

Issues

• The magnet setting splits this slug to 107/108
• Adjustment in LHRS dipole current messed up the detector alignment - gets its own separate slug 107 - WAC diagnostic on widths here: https://logbooks.jlab.org/entry/3761778
• FFB was saturating all night, killing lots of our data with BPM cuts - this was due to improper limits on auto-gaining BPMs set by OPS - this made some strange noise upon FFB restoration after BMW cycles: https://logbooks.jlab.org/entry/3761789
• Run 5646 had a LQ1 trip, cutting out events 200k and onward in that run only

Counting Mode Downstream Detectors

• Removed from cuts and correlator channel maps for safety