WAC Notes October 30 2019

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WAC Notes October 23 2019 << >> WAC Notes November 6 2019

October 23th 2019

Daily Meeting BlueJeans

Agenda

Lets follow up on Tao's summarized spreadsheet https://docs.google.com/spreadsheets/u/1/d/1Y6qR_h4oW4qNmbtdpo2TIX2u_TI5qjRUZIDyEroMfl0/edit#gid=0

And lets look at the updates to RCDB logged here https://github.com/leafybillow/check-list/commit/512908a1a0ba7a1993db7d60c0fde4078b902e48

Issues Done

• A bunch of runs from the spreadsheet have been investigated
• Some tools for investigating runs have been developed by Tao and others (in various repositories, should be joined into JAPAN soon)

Issues Pending

• Update slugs with accurate RCDB/disagreements - https://docs.google.com/spreadsheets/u/1/d/1Y6qR_h4oW4qNmbtdpo2TIX2u_TI5qjRUZIDyEroMfl0/edit#gid=0
  • Tao had sent a github link ([1]) showing changes in the runlists, including some run flags that weren't updated in RCDB.
  • WACs should try to update their runs in RCDB again.
  • We also still need to ensure that all of the runs with RCDB/slowtree mismatches have blinder map files if needed. WACs should add a comment to that sheet for runs that still need to have the blinder forced.
• Aq failure/large charge asymmetry solution:
  • Weibin and Cameron will use the Aq feedback logs to check if the large Aq runs should be cut due to feedback being off -> run list (see rootfile in /adaqfs/home/apar/weibin/Aq_FB)
• Paul will make a special setup script on adaq machines to analyze prex2 runs after the data directory move
  • In the meantime, you can use "setenv QW_DATA /adaq2/data1/"

Planned Updates

Event cuts

• Weibin has surveyed the event cuts (see rootfile in /adaqfs/home/apar/weibin/runcuts)
  • We should fix the "repeated setting" files, or remove them if they don't have other substantive changes. Fixed
  • We should standardize the beam current cut on the normalizing BCM as being 15uA below the nominal beam current.
    • Robert will make a list of the runs that are the transitions between "50uA", "70uA", and "85uA".
  • The stability cut and burp cut settings on BPMs are kind of messy. Should we try to clean them up? Cameron will look particularly at runs 3450-3452 and a few isolated runs.
    • There was a time when burp cuts needed to change scale selectively on different channels, see note here: https://prex.jlab.org/wiki/index.php/WAC_Notes_August_23_2019#Issues

Pedestals

• Devi has made log entries on this:
  • We should look at all of the calibration runs/condition changes and make sure that the pedestals calculated accurately reflect the conditions during that time
  • We should make sure that all pedestal changes are well motivated and no calibration runs were neglected
  • We should make sure that early runs aren't missing pedestals that may currently have later run ranges (Due to late application)
• Robert has made a log entry on identifying pedestal changes across runs http://ace.phys.virginia.edu/HAPPEX/3917

BCM normalizer, systematic control, etc.

• Cameron has reproduced Catherine's BCM systematics vs. normalizer/Aq BCM, but now with DDs in it too - this lives in a parallel folder to the main slug plots (called PQB)
• Victoria and W&M students are running with this and making diagnostics about systematic control on Aq
  • They've started by trying to look at the aggregated values, but Kent suggests looking at individual runs or miniruns to look at the noise levels in certain BCMs
• Devika is working on getting the list of which BCMs were working at which times, and will communicate with Victoria and Zeke

Including Dithering as Production Data

• Victoria has a list of "blessed slopes" for the whole PREX-II data set. Right now it is in a spreadsheet; she and Paul will discuss how to use this in the respin most easily
• Victoria will use cuts to investigate how it looks to include the dithering data (that was cut before) as production data
  • They have a set of event-cut choices that work with the prompt analysis, but due to analysis changes that occurred during the run it may not work as-is for the respin

Farm analysis

• Devi asked about how to get access to the data from the farm. It's on the cache and we'll put some instructions up soon
• Robert needs some help in getting the webpages set up for the respin. Weibin will work with him

Stuff needed for respin

• List of runs we want to analyze
• Adjusted BCM cuts to be 15uA below nominal
• Fix the pedestal file ranges (and understand big jumps in pedestal values)
• Any changes in event cuts needed?
• Dither corrections ready to be done for all runs

Attendance

Cameron, Ryan, Weibin, Devi, Dmitry, Tao

Phone: Victoria, Zeke, Caryn, Robert, Paul K., Kent