WAC Notes January 8 2020

Documentation

HOW TOs for shift crew

Expert Tools

All Expert Contacts

PREX Main << Weekly Analysis Coordinator << WAC Notes CREX << Instructions

WAC Notes December 15 2019 << >> WAC Notes January 9 2020

December 15 2019

Daily Meeting BlueJeans

Production Run List - Slug 104 - pre-Production

• Good - Run 5477 - Ca48 150uA - Cut out the first 45k events due to strong beam instability
• Good - Run 5478 -

Pedestal/Calibrations Updates

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

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

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")