Difference between revisions of "PPB - November 2, 2022"

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(Created page with "===Coordinates=== * On-site => Wednesdays @ 11am EDT in TL-2236 * Zoom => https://jlab-org.zoomgov.com/j/1609550529?pwd=RlNJYytUSk1tbzNJeUIxNUptTk9UzQT09&from=addon == Agenda...")
 
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== Agenda ==
 
== Agenda ==
 
* LERF injector optimization - Alicia [[media:LERFInjector_StraightBeamLine_20221102.pptx]]
 
* LERF injector optimization - Alicia [[media:LERFInjector_StraightBeamLine_20221102.pptx]]
* US Japan collaboration and Yoshinori Enomoto visit  - Joe
+
* CLAS mtg. https://indico.jlab.org/event/597/
 +
* Yoshinori Enomoto visit  - Joe
 
* AOB - all
 
* AOB - all
  

Revision as of 18:46, 1 November 2022

Coordinates

Agenda

Past bullets

All - comments/reactions from those attending Yoshinori's KEKB e+ presentation on Monday

  • Joe - JLab e-/e+ topics for U.S.-Japan Science and Technology Cooperation Program in High Energy Physics
  • Joe - couple slides request for CLAS12/Hall B collaboration meeting (11/4)
  • Sami - QWT collection with cavities File:Updates Oct 26.pdf
Joe - near (prototype) and long (cebaf) term plan updates
  • Andriy arrives next week!
  • I meet w/ Thia, Patrizia, Doug, Andrei to discuss a) physics resources and b) beam functionality for e+ program
  • Developing POC's to develop refined e+ budget estimate in ~4 months (tentatively I set the date at Feb 3)
    • gun
    • e- injector
    • SRF for e- and e+
    • target, magnet, RF collection, compression
    • radiation/shielding
    • transport optics
    • spin transport, wien, rotators
    • bi-polar power supplies
    • diagnostics
    • controls, safety
  • CLAS invited a presentation in ~3 weeks (11/1 or 11/4) on status and perspectives of e+ at CEBAF
    • high level plan, using LERF
    • last year's LDRD estimates
    • this year's work plan (something like above)
Reza - electron injector design status
Yves - 123 MeV e+ transport status
Eric - users' update
Older Topics
  • Sami - evaluate e+ yield and final momentum as a function of capture linac parameters (gradient phase aperture) media:Chicane_with_Andriy_s_model_week_5.pdf
  • Yves - begin working on injection/extraction lines from linacs
  • Dennis - update LERF to SL transport line to agree better with the FML costing geometry
  • Alicia - solicited for emission parameters for GPT, building model of Gun through QCM (desired matchpoint)
  • Carlos - evaluate gun voltage and electrode gap for 60 deg and E profiles vs. gap (compared to as built magnetic profile) Media:Existing Wien capabilities for LERF gun voltage Carlos' slides REVISED.pptx
  • S&A will plan to measure LERF relative to CEBAF and cryo points for Joe, Kelly will add FML layout to CEBAF and provide Joe Gubeli points for CEBAF
  • Joe Gubeli - would like elegant lines when available, can show them in LERF model
  • Joe/Fanglei/Amy - exchange ideas/options for e+ spin rotator inside LERF
  • Joe - prototype experiment planning media:220831_LERF_injectors.pptx

Reminders

Workshop on Polarized Sources Targets and Polarimetry (PSTP22) - Mainz, Germany, Sept 26-29 2022 [1]

  • J. Grames, "Spin Polarized Positron Beam Upgrade for Jefferson Lab", Abstract

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