Positron Working Group Workshop

Session

PWG - 2

Mar 24, 2025, 2:00 PM

Conveners

PWG - 2

• Joe Grames (JLab)

7. Welcome

Kimberly Sawyer (JLab), David Dean (JLab)

3/24/25, 2:00 PM

45. PR12+23-006

Carlos Munoz Camacho (IJCLab, Orsay (CNRS/IN2P3))

3/24/25, 2:30 PM

43. PR12+23-002

Eric Voutier (Université Paris-Saclay - CNRS/IN2P3/IJCLab)

3/24/25, 2:40 PM

46. PR12+23-008

Axel Schmidt (George Washington University)

3/24/25, 2:50 PM

48. PR12+23-012

Michael Nycz (University of Virginia)

3/24/25, 3:00 PM

44. PR12+23-003

Dave Gaskell (Jefferson Lab)

3/24/25, 3:10 PM

47. PR12+24-005

Bogdan Wojtsekhowski (Jefferson Lab)

3/24/25, 3:20 PM

1. Injection of e+ from LERF to experimental halls

Salim Ogur (Jefferson Lab)

3/24/25, 4:00 PM

Jefferson Lab is planning an upgrade at the Continuous Electron Beam Accelerator Facility (CEBAF) to provide spin-polarized positrons to the experimental nuclear physics program. In this report, we present the beamline optics design which transports 123 MeV positrons beams created at the Low Energy Recirculator Facility (LERF) and injects them into CEBAF for acceleration to 12 GeV. The new...

3. Update on Ce+BAF injector baseline simulations

Andriy Ushakov (JLab)

3/24/25, 4:30 PM

Progress in the development of the positron injector concept for the Ce+BAF is presented. The results of start-to-end positron beam tracking simulations for two injector operating modes (low current high polarized beam and high current low polarized beam) are discussed. The efficiency of the positron capture system based on a normal conducting focusing solenoid downstream of the conversion...

2. The capturing cavity scheme for CW Ce+BAF positron source

Shaoheng Wang (Jefferson Lab)

3/24/25, 5:00 PM

The Ce+BAF will be a CW positron source. In order to improve the efficiently capture the CW positron beam, a configuration of SRF cavities and solenoids beamline is explored. It is found that the SRF cavity could be used in CW positron capturing with high capturing efficiency.