Polarized Positron in Jefferson Lab Electron Ion Collider (JLEIC)

Conference · Mon Jul 01 04:00:00 EDT 2019

DOI:https://doi.org/10.2172/1976173· OSTI ID:1976173

Guo, Jiquan ^[1]

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1. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

The Jefferson Lab Electron Ion Collider (JLEIC) is a proposed new nuclear physics facility designed to deliver high luminosity and high polarization electron-ion collisions. JLEIC employs high repetition rate collisions of short low emittance bunches to achieve the electron ion luminosity goal of 10^{33}-10^{34}cm^{-2}s^{-1} over a wide range of center-of-mass energy. With a growing physics interest, a positron-ion collision scheme is under study for JLEIC. The JLEIC positron-ion scheme will use CEBAF as the positron injector with minimal modification, so the Polarized Electrons for Polarized Positrons (PEPPo) based positron generation scheme is chosen. The major challenge of this scheme is to generate the polarized positron bunch trains with the time structure and peak beam current required for the injection/top-off of the electron collider ring. In this talk, we will address the details of this scheme, with the focus on the positron beam formation, as well as the preliminary collider parameters optimized for positron-ion luminosity.

• Research Organization: Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Nuclear Physics (NP)
• DOE Contract Number: AC05-06OR23177
• OSTI ID: 1976173
• Report Number(s): JLAB-ACC-19-3099; DOE/OR/23177-6289
• Country of Publication: United States
• Language: English