Scholarlink

Introduction <p>The Beijing Electron Positron Collider (BEPC) upgrade scheme, BEPCII, has shown good performance in both synchrotron radiation and high-energy physics experiments since 2009. The BEPCII upgrade project was approved in July 2021, according to the new requirements for high-energy physics experiments.</p> Objectives <p>The luminosity optimization process of BEPCII from 2008 to 2024 and its upgrade project are described in detail.</p> Results <p>The peak luminosity during the data taking reached 1.1 × 10<sup>33</sup> cm<sup>-2</sup> s<sup>-1</sup> at the beam energy of 1.884 GeV in January 2023. A total of 52.7 fb<sup>-1</sup> of data were collected within the beam energy region of 0.920–2.472 GeV, and a series of achievements in the field of high-energy physics has been noted during the past 16 years. The upgrade scheme aims to increase the luminosity by a factor of three at the beam energy of 2.35 GeV and extend the maximum beam energy from 2.47 to 2.8 GeV. The installation of the upgrade project started on July 1, 2024, and the commissioning started on May 2, 2025.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Sixteen-year luminosity optimization of BEPCII and its upgrade project

  • 期刊论文

  • 发表日期：

    2026年4月2日

查看全文
  • Chenghui Yu,
  • Yuan Zhang,
  • Cai Meng,
  • Jun Xing,
  • Lei Qian,
  • Jianli Wang,
  • Jian Cheng

摘要

Introduction

The Beijing Electron Positron Collider (BEPC) upgrade scheme, BEPCII, has shown good performance in both synchrotron radiation and high-energy physics experiments since 2009. The BEPCII upgrade project was approved in July 2021, according to the new requirements for high-energy physics experiments.

Objectives

The luminosity optimization process of BEPCII from 2008 to 2024 and its upgrade project are described in detail.

Results

The peak luminosity during the data taking reached 1.1 × 1033 cm-2 s-1 at the beam energy of 1.884 GeV in January 2023. A total of 52.7 fb-1 of data were collected within the beam energy region of 0.920–2.472 GeV, and a series of achievements in the field of high-energy physics has been noted during the past 16 years. The upgrade scheme aims to increase the luminosity by a factor of three at the beam energy of 2.35 GeV and extend the maximum beam energy from 2.47 to 2.8 GeV. The installation of the upgrade project started on July 1, 2024, and the commissioning started on May 2, 2025.