Status report towards implementation of a Compton polarimeter at BEPCII
Abstract
Precision beam polarization measurements based on Compton polarimeters are essential for the physics program of future high-energy colliders. In order to prepare for these and to extend the scope of physics measurements of the BESIII experiment at the BEPCII, a diagnostic of electron beam transverse polarization at BEPCII is of interest. The design and status report of the commissioning, until July 2025, of this device is reported in this paper. We report unambiguous observation of Compton interaction, discuss current limitations of the experimental setup and draw prospects for improvements and actual measurement of electron beam polarization in the near future.
Cite
@article{arxiv.2605.09001,
title = {Status report towards implementation of a Compton polarimeter at BEPCII},
author = {Mengyu Su and Zhe Duan and Jie Gao and Qingfu Han and Daheng Ji and Dazhang Li and Qi Li and Xiaodong Li and Yanchun Li and Zhijun Liang and Ge Lei and Zhonghui Ma and Aurélien Martens and Lingling Men and Xianjing Sun and Guangyi Tang and Huan Wang and Jianli Wang and Lin Wang and Qi Yang and Lingda Yu and Chenghui Yu and Jianyong Zhang and Wan Zhang and Yandong Zhang and Yuelei Zhang and Ningchuang Zhou and Dechong Zhu and Fabian Zomer},
journal= {arXiv preprint arXiv:2605.09001},
year = {2026}
}
Comments
24 pages, 11 figures; Accepted by Radiation Detection Technology and Methods(RDTM)(https://doi.org/10.1007/s41605-026-00675-4)