PPB - February 8, 2023

Meeting Coordinates

• On-site => Wednesdays @ 11am EDT in TL-2236
• Zoom => https://jlab-org.zoomgov.com/j/1616149761?pwd=SDJKY3NhWEtBOUR5MVR5RlY1R1pHdz09&from=addon

Agenda

Discussions/Presentations

• Joe (10) - Review upcoming meetings/calendar
• Eric (15) - Characterization and optimization of positron production TN media:230208_PosProd.pdf
• Sami (15) - S2E simulation for the polarized mode
• Andriy (10) - Early results for e+ bunch length after target

Upcoming Meetings/Dates

• January 26, Winter Hall A Collaboration Meeting - https://indico.jlab.org/event/602/ => please upload presentation to wiki
• February 6, ILC IDT Sources
  • T. Omori, e-driven scheme, summary of present status and remaining issues
  • Join Zoom Meeting at 9am EDT

• February 13, Xelera visit for e+ SBIR Phase 1 (Test Lab Rm. 1227, 9:30-11:30am)
  • All - Meet each other
  • Karl+ - Xelera goals and plan
  • Joe+ - JLab goals and schedule for LERF
  • Sami - Collection scheme

• March 7-8, U. Va. Positron Working Group Meeting, Charlottesville (Joe, Dennis, Sami, Andriy) - https://indico.jlab.org/event/680/
  • Joe Grames (20+5) - Ce+BAF concept and the challenging polarized e- source
  • Andriy Ushakov (15+5) - Concept of a polarized positron injector for CEBAF
  • Sami Habet (15+5) - Positron target design and fatigue studies
  • Dennis Turner (15+5) - Delivering e+ beams from LERF through Ce+BAF

• March 8-10, JLab Accelerator Advisory Committee Review
  • Andriy (15+5) - High power target for e+ LERF concept
  • Sami (15+5) - Positron collection scheme for Ce+BAF

• March 20, SAD begins!

• March 21-24, International Workshop on CLAS12 Physics and Future Perspectives at JLab (Paris)
  • Alex - 22 GeV/e+ overview
  • Yves - Transport of e+ from LERF to Ce+BAF

• March 23-24, KEK visit @ JLAB

• March 28, Sami returns to IJCLab to write his thesis!

• March 29 - April 5, Mainz Beam Test
  • Andriy will attend

• May 15-19, LCWS2023 International Workshop on Linear Colliders (Andriy) - https://indico.slac.stanford.edu/event/7467/overview

• May 7-12, IPAC'23
  • G. Blume et al., "A 5 MeV Compton transmission polarimeter designed for a SRF photogun" media:abstract-1233.pdf
  • J. Grames et al., "Status of Ce+BAF: Polarized Positron Beam Capability at CEBAF 12 GeV" media:abstract-1313.pdf
  • R. Kazimi et al., "Polarized Electron Injector for Positron Capability at CEBAF 12 GeV" media:abstract-1917.pdf
  • A. Sy et al., "Degrader beamline design at the CEBAF injector for machine acceptance studies" media:Amy_Sy-IPAC23.pdf
  • A. Ushakov et al, "Conceptual Design of a High-Power Target for Positron Production at CEBAF" media:abstract-1794.pdf

• Summer TBD, Positron workshop (To be announced)