Difference between revisions of "Analysis Expert"

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(Analysis Shift Worker Tasks)
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== Analysis Shift Worker Tasks ==
 
== Analysis Shift Worker Tasks ==
 
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# Ensure shift crew is counting good coulombs properly and recording ABU's properly ((https://logbooks.jlab.org/entry/3785102)
 
# Assist shift crew in data taking as needed
 
# Assist shift crew in data taking as needed
 
#* help diagnose and solve CODA issues
 
#* help diagnose and solve CODA issues
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#* Log anything that you think is an issue that needs to be investigated and email the WAC
 
#* Log anything that you think is an issue that needs to be investigated and email the WAC
 
# Decide when to change IHWP settings
 
# Decide when to change IHWP settings
#* Each slug should have ~8 runs, but the real measure is a total charge of at least 1.2 C (but not too much more than this)
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#* Each slug should have ~15 runs(at 50% efficiency), but the real measure is a total charge of at least 4.0 C (but not too much more than this, like 4.2C)
 
#* Keep track of the accumulated charge in the slug using the [[PVDB#Accumulated_charge_monitor | counter]]
 
#* Keep track of the accumulated charge in the slug using the [[PVDB#Accumulated_charge_monitor | counter]]
 
#** If the current run had steady beam and no known issues, check the accumulated charge before it ends
 
#** If the current run had steady beam and no known issues, check the accumulated charge before it ends
#** If the accumulated charge is >1.2 C including all runs but the current run, and the current run is good, you can probably increment the slug
+
#** If the accumulated charge is >4.0 C including all runs but the current run, and the current run is good, you can probably increment the slug
 
#** Ask the shift leader to follow the instructions at [[Flipper]]
 
#** Ask the shift leader to follow the instructions at [[Flipper]]

Revision as of 13:13, 18 February 2020

Quick Links
HOW TOs
CODA
WAC Tools
Online analysis How-To



PREX Main << Information for Shift Takers

Sign up for the Analysis shifts!

Analysis shift worker

The analysis shift worker is tasked with ensuring that the data is analyzed after it is taken, and with assisting in all tasks that the shift leader requests.

There are tools available for the analysis shift worker to check the quality of the data and analyze/reanalyze runs in Online analysis

Analysis Shift Worker Tasks

  1. Ensure shift crew is counting good coulombs properly and recording ABU's properly ((https://logbooks.jlab.org/entry/3785102)
  2. Assist shift crew in data taking as needed
    • help diagnose and solve CODA issues
    • answer questions about plots in Panguin
    • remind the TO to check the Panguin plots frequently
  3. Makes sure online analysis is up to date
  4. Look at beam quality
    • Look at runs from a previous good period and compare to the current runs
    • Watch for changes in means and widths over time
    • Log anything that you think is an issue that needs to be investigated and email the WAC
  5. Decide when to change IHWP settings
    • Each slug should have ~15 runs(at 50% efficiency), but the real measure is a total charge of at least 4.0 C (but not too much more than this, like 4.2C)
    • Keep track of the accumulated charge in the slug using the counter
      • If the current run had steady beam and no known issues, check the accumulated charge before it ends
      • If the accumulated charge is >4.0 C including all runs but the current run, and the current run is good, you can probably increment the slug
      • Ask the shift leader to follow the instructions at Flipper