2024 Workshop on Polarized Sources, Targets, and Polarimetry

Session

Polarized Electron Sources I

Sep 24, 2024, 1:50 PM

Cebaf Center Auditorium (Jefferson Lab)

Conveners

Polarized Electron Sources I

• Matt Poelker (Jefferson Lab)

69. Polarized Photocathode R&D at BNL and spin consideration for the EIC

Jyoti Biswas (Brookhaven National Laboratory)

9/24/24, 1:50 PM

Superlattice GaAs photocathodes are vital for producing polarized electron beams in key accelerator facilities, such as the Continuous Electron Beam Accelerator Facility (CEBAF) at Jefferson National Laboratory and the Electron-Ion Collider (EIC) at Brookhaven National Laboratory. The electron pre-injector at the EIC requires a 7 nC bunch with at least 85% spin polarization from a GaAs-based...

92. The 200 keV CEBAF polarized source electrode design and implementation process

Carlos Hernandez-Garcia (Thomas Jefferson National Accelerator Facility)

9/24/24, 2:10 PM

The CEBAF injector, which generates continuous-wave spin-polarized electron beams for nuclear physics experiments at Jefferson Lab, has been upgraded with a polarized 200 keV photoemission electron source (photogun). We present the workflow involved in the development of this photogun with particular emphasis on the transverse match of the beam to the injector. Competing factors arise when...

72. Generation of Polarized Electron Beams: Unveiling the First RF Electron Gun with GaAs Photocathode

Yichao Jing (BNL)

9/24/24, 2:30 PM

Polarized electron beams play critical role in fundamental physics research by providing additional observables and opening new channels of discoveries. This discovery potential is well-known and is frequently used in high-energy and nuclear physics research. Recently, more conventional branches of science, such as ultra-fact electron microcopy, started exploitation of unique features of...

104. Development of Polarized Electron Sources in Japan

Zachary Liptak (Hiroshima University)

9/24/24, 2:50 PM

Future particle accelerator projects in Japan such as the proposed International Linear Collider and an upgrade under consideration to the SuperKEKB collider plan to utilize spin-polarized lepton beams. Work is underway to create robust sources of polarized electrons for these projects, as well as solving issues related to beam transport and spin manipulation. This talk will describe the work...