Study of Electron Polarization Dynamics in the JLEIC at Jlab

Conference · Mon May 01 00:00:00 EDT 2017

DOI:https://doi.org/10.18429/JACoW-IPAC2017-WEPIK114· OSTI ID:1375631

Lin, Fanglei ^[1]; Derbenev, Yaroslav ^[1]; Morozov, Vasiliy ^[1]; Zhang, Yuhong ^[1]; Barber, Desmond P. ^[2]

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1. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
2. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)

The design of an electron polarization scheme in the Jefferson Lab Electron-Ion Collider (JLEIC) aims to attain a high longitudinal electron polarization (over 70%) at collision points as required by the nuclear physics program. Comprehensive strategies for achieving this goal have been considered and developed including injection of highly polarized electrons from CEBAF, mechanisms for manipulation and preservation of the polarization in the JLEIC collider ring and measurement of the electron polarization. In particular, maintaining a sufficiently long polarization lifetime is crucial for accumulation of adequate experimental statistics. The chosen electron polarization configuration, based on the unique figure-8 geometry of the ring, removes the electron spin-tune energy dependence. This significantly simplifies the control of the electron polarization and suppresses the synchrotron sideband resonances. This paper reports recent studies and simulations of the electron polarization dynamics in the JLEIC electron collider ring.

• Research Organization: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Nuclear Physics (NP)
• DOE Contract Number: AC05-06OR23177; AC02-06CH11357
• OSTI ID: 1375631
• Report Number(s): JLAB-ACP-17-2535; DOE/OR/23177-4199
• Resource Relation: Conference: IPAC 2017, Copenhagen, Denmark, May 14-19, 2017
• Country of Publication: United States
• Language: English