Difference between revisions of "Real Gamma GDH Experiment (REGGE)"

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===GDH wiki page===
 
===GDH wiki page===
To connect please do the following
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To join the zoom Meeting:  https://jlab-org.zoomgov.com/j/1612461827?pwd=UEtkVHRFdFlxMG9GSlA1dDhxMmdBQT09
# To join via a Web Browser, go to the page [1] https://bluejeans.com/7572697526
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# To join via Polycom room system go to the IP Address: 199.48.152.152 (bjn.vc) and enter the meeting ID: 7572697526
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# To join via phone, use one of the following numbers and the Conference ID: 7572697526
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# Moderator code:7377
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Meeting ID: 161 246 1827
  
Dial Either +1 408 740 7256 or +1 888 240 2560 for US or Canada
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passcode: 303252
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==Mailing list==
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Visit the [https://mailman.jlab.org/mailman/listinfo/halld-regge page] to register to the Regge experiment mailing list.
  
 
==Documents==
 
==Documents==
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*Misc
 
*Misc
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**[https://arxiv.org/abs/2107.08133 Article (2021) reporting on data on the Bjorken sum rule, suggesting that polarized cross-sections at large energy are not well understood]
 
**[https://docs.google.com/document/d/1MU4HFs6mBkG2ypWAH1NqMKvzM_5djzB-qU929HlMYw0/edit?usp=sharing Justin's initial document on what is expected from the simulation]
 
**[https://docs.google.com/document/d/1MU4HFs6mBkG2ypWAH1NqMKvzM_5djzB-qU929HlMYw0/edit?usp=sharing Justin's initial document on what is expected from the simulation]
 
**[https://halldweb.jlab.org/wiki/images/9/91/200406_PolarizedHallD.pdf Joe Grame's thoughts on beam polarization in Hall D]
 
**[https://halldweb.jlab.org/wiki/images/9/91/200406_PolarizedHallD.pdf Joe Grame's thoughts on beam polarization in Hall D]
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**[https://userweb.jlab.org/~deurpam/poelker_Ops_retreat_bleedthrough.ppt Matt Poelker's 2016 slides on bleedthrough]
  
 
==Misc. Tasks and questions==
 
==Misc. Tasks and questions==
  
*Discuss funding options with Eugene, Chris K., Todd and Dustin
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*Discuss funding options with Eugene, Chris K., Justin, Todd and Dustin
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**Join WM-UVa proposal.
 
*Finalize polarized BH and Compton event generator. S. Širca, M. Dalton
 
*Finalize polarized BH and Compton event generator. S. Širca, M. Dalton
*Organize tests on solid targets to measure background and signal rates. J. Stevens
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**[[Email from Richard Jones (06/14/2021)]]
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*<s>Organize tests on solid targets to measure background and signal rates. J. Stevens</s> Already taken GlueX data are sufficient.
 
*Polarized target building. C. Keith.
 
*Polarized target building. C. Keith.
 
*Bleedthrough issue. A. Deur
 
*Bleedthrough issue. A. Deur
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**Accelerator reported in [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=5107 May 2021 GlueX collaboration meeting] that a new system will be installed, probably for the next run (8/2021) that will eliminate bleedthrough in Hall D.
 
*Beam helicity reporting for Hall D. M. Dalton
 
*Beam helicity reporting for Hall D. M. Dalton
 
*Once the backgrounds are simulated and understood, define trigger. Discussion with Sacha.
 
*Once the backgrounds are simulated and understood, define trigger. Discussion with Sacha.
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*Extend the doubly polarized experimental program.
 
*Extend the doubly polarized experimental program.
 
**"GDH" on nuclei (shadowing/antishadowing studies). M. Dalton, A. Deur
 
**"GDH" on nuclei (shadowing/antishadowing studies). M. Dalton, A. Deur
**Dustin proposal(s).
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**Dustin proposal(s):
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***eta meson.
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***Polarized Compton.
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==Student Projects==
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* Study beam hardener
  
 
==Minutes of meeting ==
 
==Minutes of meeting ==

Latest revision as of 09:00, 18 February 2022

GDH wiki page

To join the zoom Meeting: https://jlab-org.zoomgov.com/j/1612461827?pwd=UEtkVHRFdFlxMG9GSlA1dDhxMmdBQT09

Meeting ID: 161 246 1827

passcode: 303252


Mailing list

Visit the page to register to the Regge experiment mailing list.

Documents


Misc. Tasks and questions

  • Discuss funding options with Eugene, Chris K., Justin, Todd and Dustin
    • Join WM-UVa proposal.
  • Finalize polarized BH and Compton event generator. S. Širca, M. Dalton
  • Organize tests on solid targets to measure background and signal rates. J. Stevens Already taken GlueX data are sufficient.
  • Polarized target building. C. Keith.
  • Bleedthrough issue. A. Deur
  • Beam helicity reporting for Hall D. M. Dalton
  • Once the backgrounds are simulated and understood, define trigger. Discussion with Sacha.
  • Look into having an Al. radiator of RL between 2. 10^-5, 10^-4, so that we have some beam current flexibility.
  • Design and build a beam hardener.
  • Optional Pair Spec. upgrade.
  • Study options for the low energy run.
    • Discussion with accelerator on how and when we can run at low energy
    • Study how the GlueX apparatus will behave with lower energy electrons (transmission, etc...)
  • Extend the doubly polarized experimental program.
    • "GDH" on nuclei (shadowing/antishadowing studies). M. Dalton, A. Deur
    • Dustin proposal(s):
      • eta meson.
      • Polarized Compton.

Student Projects

  • Study beam hardener

Minutes of meeting

2019: 09/17/2019 10/09/2019 10/23/2019 11/13/2019 11/27/2019

03/27/2020

03/31/2020

04/01/2020

04/08/2020

04/15/2020

04/21/2020

04/28/2020

05/06/2020

05/20/2020

05/27/2020

06/11/2020

06/17/2020

07/07/2020

07/22/2020

07/29/2020

08/12/2020

08/19/2020

09/09/2020

10/13/2020

11/10/2020