WAC Notes January 8 2020

January 8 2020

Daily Meeting BlueJeans

Production Run List - Slug 105 - IHWP IN - Flip-RIGHT - Production

Good - Run 5576 - Ca48 150uA - About 1 minirun worth of OK beam. A run all by itself in slug 105. cuts from 220-240k to remove an excursion

Production Run List - Slug 106 - IHWP OUT - Flip-RIGHT - Production

Good - Run 5581 - Needed a cut for a beam moving at the beginning, and for clipping towards the end
Good - Run 5582
Good - Run 5583
Good - Run 5613 - First run back from Compton tuning, with BMW testing in it - Cut beam excursions at 0-30k, 80-220k - Large Aq RMS, due to Injector problems. Fixed later by Ops
Good - Run 5616 - Good
Good - Run 5619 - Short, bad Aq Feedback, OK
Good - Run 5620 - Short, bad Aq Feedback, OK

Non-Production Runs and Bad Runs

Short - Run 5614 - completely trippy beam with some 125 uA data included at the end. 1/4 of a normal minirun size, and the Aq is at 11ppm which is slightly greater than the 1 sigma limit, BAD
Junk - Run 5615 - Junk
Short - Run 5617 - bad Aq

Pedestal/Calibrations Updates

Issues

Slug 104 has FFB turn on mid way through the slug - this makes the optics/energy in the HRS more comfortable and stable
SAM 7 is updated and ATs are moved at the end of slug 103 and ATs are moved at the end of slug 104, so these are bifurcations
Fixed the prompt summary to report correct number of patterns: https://logbooks.jlab.org/entry/3753878
12X energy shifting
- Dispersion in the arc is measured as 0.4 MeV/mm
- Dispersion in the HRS is 6.2 mm/MeV
- Dithering does a 0.5 mm p2p fluctuation in 12 X -> 1.25 mm shift in the HRS Quartz
- Normal running without FFB does 1 mm p2p fluctuations (over hour time scale) -> 2.5 mm shift in the HRS quartz

5477.0 has a significant problem in JAPAN
Long vs. short bursts will require JAPAN rNd from Paul, etc.

The AT combos of interest are Ldd avg Rdd (for vertical transverse), Indd avg Outdd (most important for horizontal transverse), and dd's therein

BCMs

Run 5474 is a current ramp for calibrating BCM Cav 4CQ, AT Rs, and SAM 7

Target/Energy Tolerances

Commissioning

Pedestals and Calibrations (respin first 4 slugs)

https://docs.google.com/spreadsheets/d/1mt39fCuIW3Pr8TO7fzhtFjmMFt4Op30jMm5wMQke6Xo/edit#gid=0

Run 5410 - Unser calibration - 5396->5420 - https://logbooks.jlab.org/entry/3753060
Run 5417 - SAM calibration - 5410->5420 - https://logbooks.jlab.org/entry/3753970
Run 5433 - BPMs calibration - 5410-> - https://logbooks.jlab.org/entry/3753602
Run 5436 - SAM and Main Dets - 5421->5473 - https://logbooks.jlab.org/entry/3753968
Run 5434 - Unser calibration - 5421-> - https://logbooks.jlab.org/entry/3753564
Run 5474 - Main dets and SAMs - 5474-> - https://logbooks.jlab.org/entry/3753933

Committed: https://github.com/JeffersonLab/japan/commit/ddb956334b38acb124f67b1e841b5a02c761cc97

Other Status Updates

BMOD Ana

note regarding beammod analysis:

Running the BeamMod analysis for a single run.

From ~/PREX/prompt/bmodAna/ create a new beammod root file from the already prompted run (####) using command root -l -b -q bmodAna.C'(####,"max_input.list")'

then, to plot all combinations of alphas, deltas,and alpha/delta use the common root -l -b -q plotAD.C'("path/to/rootfile/created/by/the/previous/command.root")

Counting Mode Downstream Detectors

WAC Notes January 8 2020

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