Polarized Positrons at Ce+BAF

Ce+BAF working group

doi:10.22323/1.472.0072

Polarized Positrons at Ce⁺BAF

Ce+BAF working group

Accelerator Physics

Research output: Contribution to journal › Conference article › peer-review

Abstract

A baseline concept for a continuous wave (CW) polarized positron injector was developed for the Continuous Electron Beam Accelerator Facility (CEBAF) at Jefferson Lab [1]. This concept is based on positron beam generation by a high current polarized electron beam (1 mA, 120 MeV, >85% polarization) irradiating a rotating water-cooled tungsten target or liquid metal target. The update on the development of the Ce⁺BAF injector concept including the polarized electron source, the development of high power targets, simulations of positron capture, the design of the transport line from the positron injector to the CEBAF North Linac and the planned experiment to measure the upper limits of transverse and longitudinal emittances accepted by the 12 GeV CEBAF optics are presented.

Original language	English
Article number	072
Journal	Proceedings of Science
Volume	472
DOIs	https://doi.org/10.22323/1.472.0072
State	Published - Jun 27 2025
Event	20th International Workshop on Polarized Source, Targets, and Polarimetry, PSTP 2024 - Newport News, United States Duration: Sep 22 2024 → Sep 27 2024

Funding

The work presented here was done within the Ce+BAF Working Group and all contributions are gratefully acknowledged. This project is supported by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics under contract DE-AC05-06OR23177. The research described in this paper was conducted under the Laboratory Directed Research and Development Program at Thomas Jefferson National Accelerator Facility for the U.S. Department of Energy. The development of the solid target is supported by the DOE NP-FOA Research and Development for Next Generation Nuclear Physics Accelerator Facilities. Xelera Research LLC’s development of the liquid target is supported by the DOE SBIR program. A U.S.-Japan collaboration is supported by the DOE HEP ‘‘Advanced Positron Concepts’’ program. Partial financial support for the Ph.D. student V. Lizárraga-Rubio was received from the National Council of Humanities, Sciences and Technologies (CONAHCYT).

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10.22323/1.472.0072

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@article{c8615d12362342898a5884ed1723f0bc,

title = "Polarized Positrons at Ce+BAF",

abstract = "A baseline concept for a continuous wave (CW) polarized positron injector was developed for the Continuous Electron Beam Accelerator Facility (CEBAF) at Jefferson Lab [1]. This concept is based on positron beam generation by a high current polarized electron beam (1 mA, 120 MeV, >85\% polarization) irradiating a rotating water-cooled tungsten target or liquid metal target. The update on the development of the Ce+BAF injector concept including the polarized electron source, the development of high power targets, simulations of positron capture, the design of the transport line from the positron injector to the CEBAF North Linac and the planned experiment to measure the upper limits of transverse and longitudinal emittances accepted by the 12 GeV CEBAF optics are presented.",

author = "\{Ce+BAF working group\} and A. Ushakov and J. Benesch and M. Bruker and L. Cardman and J. Conway and \{Covrig Dusa\}, S. and P. Degtiarenko and Y. Enomoto and S. Gessner and P. Ghoshal and S. Gopinath and J. Grames and C. Gulliford and S. Habet and G. Hays and C. Hern{\'a}ndez-Garc{\'i}a and A. Hofler and R. Kazimi and M. Kostin and Kostroun, \{V. O.\} and F. Lin and V. Liz{\'a}rraga-Rubio and K. Mahler and Y. Morikawa and S. Nagaitsev and S. Ogur and G. Palacios-Serrano and N. Raut and B. Rimmer and Y. Roblin and A. Seryi and K. Smolenski and M. Stutzman and R. Suleiman and A. Sy and N. Taylor and D. Turner and C. Valerio-Lizarraga and E. Voutier and S. Wang and Y. Zhang",

note = "Publisher Copyright: {\textcopyright} Copyright owned by the author(s) under the terms of the Creative Commons.; 20th International Workshop on Polarized Source, Targets, and Polarimetry, PSTP 2024 ; Conference date: 22-09-2024 Through 27-09-2024",

year = "2025",

month = jun,

day = "27",

doi = "10.22323/1.472.0072",

language = "English",

volume = "472",

journal = "Proceedings of Science",

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TY - JOUR

T1 - Polarized Positrons at Ce+BAF

AU - Ce+BAF working group

AU - Ushakov, A.

AU - Benesch, J.

AU - Bruker, M.

AU - Cardman, L.

AU - Conway, J.

AU - Covrig Dusa, S.

AU - Degtiarenko, P.

AU - Enomoto, Y.

AU - Gessner, S.

AU - Ghoshal, P.

AU - Gopinath, S.

AU - Grames, J.

AU - Gulliford, C.

AU - Habet, S.

AU - Hays, G.

AU - Hernández-García, C.

AU - Hofler, A.

AU - Kazimi, R.

AU - Kostin, M.

AU - Kostroun, V. O.

AU - Lin, F.

AU - Lizárraga-Rubio, V.

AU - Mahler, K.

AU - Morikawa, Y.

AU - Nagaitsev, S.

AU - Ogur, S.

AU - Palacios-Serrano, G.

AU - Raut, N.

AU - Rimmer, B.

AU - Roblin, Y.

AU - Seryi, A.

AU - Smolenski, K.

AU - Stutzman, M.

AU - Suleiman, R.

AU - Sy, A.

AU - Taylor, N.

AU - Turner, D.

AU - Valerio-Lizarraga, C.

AU - Voutier, E.

AU - Wang, S.

AU - Zhang, Y.

PY - 2025/6/27

Y1 - 2025/6/27

N2 - A baseline concept for a continuous wave (CW) polarized positron injector was developed for the Continuous Electron Beam Accelerator Facility (CEBAF) at Jefferson Lab [1]. This concept is based on positron beam generation by a high current polarized electron beam (1 mA, 120 MeV, >85% polarization) irradiating a rotating water-cooled tungsten target or liquid metal target. The update on the development of the Ce+BAF injector concept including the polarized electron source, the development of high power targets, simulations of positron capture, the design of the transport line from the positron injector to the CEBAF North Linac and the planned experiment to measure the upper limits of transverse and longitudinal emittances accepted by the 12 GeV CEBAF optics are presented.

AB - A baseline concept for a continuous wave (CW) polarized positron injector was developed for the Continuous Electron Beam Accelerator Facility (CEBAF) at Jefferson Lab [1]. This concept is based on positron beam generation by a high current polarized electron beam (1 mA, 120 MeV, >85% polarization) irradiating a rotating water-cooled tungsten target or liquid metal target. The update on the development of the Ce+BAF injector concept including the polarized electron source, the development of high power targets, simulations of positron capture, the design of the transport line from the positron injector to the CEBAF North Linac and the planned experiment to measure the upper limits of transverse and longitudinal emittances accepted by the 12 GeV CEBAF optics are presented.

UR - https://www.scopus.com/pages/publications/105009699618

U2 - 10.22323/1.472.0072

DO - 10.22323/1.472.0072

M3 - Conference article

AN - SCOPUS:105009699618

SN - 1824-8039

VL - 472

JO - Proceedings of Science

JF - Proceedings of Science

M1 - 072

T2 - 20th International Workshop on Polarized Source, Targets, and Polarimetry, PSTP 2024

Y2 - 22 September 2024 through 27 September 2024

ER -

Polarized Positrons at Ce⁺BAF

Abstract

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