Difference between revisions of "BLTWG Meeting 05/26/2020"

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(Created page with "=== Organization === * Time: 1:30 EDT * JLab meeting room: CEBAF Center F324-325 * Connecting: detailed instructions are here ** H.323...")
 
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** phone: 408-740-7256 or 888-240-2560
 
** phone: 408-740-7256 or 888-240-2560
 
* Conference id: 536076821
 
* Conference id: 536076821
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* Present: <!--Richard J., Mark D., Sasha S., Justin S., Hovanes E., Ken L., Dan S., Elton S., Beni Z., Alexander A., Alexandre D.-->
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* Present: Richard J., Mark D., Sasha S., Justin S., Dan S., Elton S., Beni Z., Alexander A., Curtis M, and Alexandre D.
  
 
=== Agenda ===
 
=== Agenda ===
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# Polarimetry
 
# Polarimetry
 
#* TPOL polarimetry update
 
#* TPOL polarimetry update
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#* Polarimetry from hadron decays
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#* Progress on CBSA calculations
 
# Offline analysis
 
# Offline analysis
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#* changes in TAGM calibration constants
 
 
#* coordinated updates to ccdb for 2020 spring run
 
#* coordinated updates to ccdb for 2020 spring run
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# NIM paper figure on e-beam convergence
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#* dead channels database update for spring run
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#* [https://drive.google.com/file/d/1H6y4GCCYNvjMQJlA_wBoXU7OnvsMRAN0/view?usp=sharing current draft figure]
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#* coordinated tagger energy scaling fix
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#*: [https://halldweb.jlab.org/DocDB/0045/004509/001/ps_tagger_energy.pdf Status of the calibration for Spring 2020 runs] -- Sasha
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#* tracking changes in tagger dipole field -- ''discussion''
 
# Photon beam systematics studies
 
# Photon beam systematics studies
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#* variation in collimator transmission
 
 
#* energy-dependent beam profile from fast raster
 
#* energy-dependent beam profile from fast raster
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#* tagging accidentals scan analysis
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#* tagging accidentals scan analysis -- ''Richard''
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#** using only 2 side bunches rather than 12 gives the same result (for accidental scaling factors) up to minor changes, however, the large discrepancy between microscope and hodoscope (1.05 vs. 1.1) persists in the spring 19 data for PrimeX. There is also a noticeable difference (2-3%) between hodoscope above and below the microscope and both are significantly larger than the microscope values.This is NOT seen in the fall18 and fall19 data sets. Note, this is done using events with PS data.
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#* variation in collimator transmission -- ''updates?''
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#* other beam flux systematics
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#* converter thickness systematics
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# Presentations at May Collaboration Meeting ([[GlueX-Collaboration-May-2020|new organizational structure]] -- see Tuesday morning)
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#* [https://halldweb.jlab.org/wiki-private/index.php/2020_Analysis_Task_Forces#Photon_Flux_Systematics_Task_Force Photon Flux Systematics Task Force]
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## beam-related issues confronted by analysis groups
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#* other topics?
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##* Accidental scaling factors and followup on high intensity runs this past Spring
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##* Status of flux systematics: overall normalization, energy dependence, etc.
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##* Status of polarization systematics: converter thickness comparisons, etc.
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## other topics?
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# Any other business
 
# Any other business
  
 
=== Notes ===
 
=== Notes ===

Latest revision as of 13:31, 26 May 2020

Organization

  • Time: 1:30 EDT
  • JLab meeting room: CEBAF Center F324-325
  • Connecting: detailed instructions are here
  • Conference id: 536076821
  • Present: Richard J., Mark D., Sasha S., Justin S., Dan S., Elton S., Beni Z., Alexander A., Curtis M, and Alexandre D.

Agenda

  1. Announcements
  2. Polarimetry
    • TPOL polarimetry update
    • Progress on CBSA calculations
  3. Offline analysis
    • coordinated updates to ccdb for 2020 spring run
    • dead channels database update for spring run
    • coordinated tagger energy scaling fix
      Status of the calibration for Spring 2020 runs -- Sasha
    • tracking changes in tagger dipole field -- discussion
  4. Photon beam systematics studies
    • energy-dependent beam profile from fast raster
    • tagging accidentals scan analysis -- Richard
    • variation in collimator transmission -- updates?
    • converter thickness systematics
    • Photon Flux Systematics Task Force
    • other topics?
  5. Any other business

Notes

Retrieved from "https://halldweb.jlab.org/wiki/index.php?title=BLTWG_Meeting_05/26/2020&oldid=99239"