Difference between revisions of "Π polarizability Meeting May 27, 2020"

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# Announcements
 
# Announcements
 
# Update on Engineering/Design
 
# Update on Engineering/Design
#* [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=4416 Screen Shots of Mechanical Design Apr 2 and 23]
+
## [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=4416 Screen Shots of Mechanical Design Apr 2 and 23]
#* [[May 7, 2020 CPP Design Meeting]]
+
## [[May 21, 2020 CPP Design Meeting]]
 +
## Notes on beam test (Elton)
 +
##* Tim: Can safely remove the DIRC with the B field on.  Time estimate is about one shift.
 +
##* No easy way of inserting additional Pb sheets next to the TOF. Possibly one can mount Pb sheets off the DIRC support structure.
 +
## Test activities (email 5/21 from Ilya)
 +
##*  I believe we need to collect similar dataset as we did before without DIRC: high-frequency random trigger, possibly shifted down coherent peak, LH2 and empty target, beam current 10, 20, 30 nA ~3 min each.
 +
##* If it would be possible to install single thickness shielding without modifying TOF position from the nominal value - also the same dataset with the shielding installed (inner hole in the shielding needs to be increased in this case).
 +
##*  In case if shielding installation requires modification of the TOF position, I think it is more important to keep the right TOF position rather than to collect additional data with shielding installed.
 
# Studies on Fe thickness (Ilya)
 
# Studies on Fe thickness (Ilya)
 +
#*https://www.jlab.org/~ilarin/cpp/summary_0520.pdf
 
# Data Analysis - Andrew
 
# Data Analysis - Andrew
 
# Preparations for Jeopardy
 
# Preparations for Jeopardy

Latest revision as of 09:00, 27 May 2020

Meeting Info.

Meeting Time And Location

9:00 EST (JLab time)

CC L207

Connecting

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Action Items

  1. Review studies that validate present 90 cm Fe design (Ilya)

Agenda

  1. Previous meeting: May 20, 2020
  2. Announcements
  3. Update on Engineering/Design
    1. Screen Shots of Mechanical Design Apr 2 and 23
    2. May 21, 2020 CPP Design Meeting
    3. Notes on beam test (Elton)
      • Tim: Can safely remove the DIRC with the B field on. Time estimate is about one shift.
      • No easy way of inserting additional Pb sheets next to the TOF. Possibly one can mount Pb sheets off the DIRC support structure.
    4. Test activities (email 5/21 from Ilya)
      • I believe we need to collect similar dataset as we did before without DIRC: high-frequency random trigger, possibly shifted down coherent peak, LH2 and empty target, beam current 10, 20, 30 nA ~3 min each.
      • If it would be possible to install single thickness shielding without modifying TOF position from the nominal value - also the same dataset with the shielding installed (inner hole in the shielding needs to be increased in this case).
      • In case if shielding installation requires modification of the TOF position, I think it is more important to keep the right TOF position rather than to collect additional data with shielding installed.
  4. Studies on Fe thickness (Ilya)
  5. Data Analysis - Andrew
  6. Preparations for Jeopardy
  7. Other business
  8. Next meeting

Minutes

TBD