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<p>The Circular Electron-Positron Collider (CEPC) is a next-generation electron-positron collider that has been proposed for the precise measurement of the properties of the Higgs boson. To enhance boson separation and jet reconstruction, the baseline design of the CEPC detector was guided by the particle flow algorithm (PFA) concept. As one of the calorimeter options, the analog hadron calorimeter (AHCAL) was proposed. The CEPC AHCAL comprises a 40-layer sandwich structure using steel plates as absorbers and scintillator tiles coupled with silicon photomultipliers (SiPMs) as sensitive units. To validate the feasibility of the AHCAL option, a series of studies were conducted to develop a prototype. This AHCAL prototype underwent electronic and cosmic ray tests to assess its performance and ensure that it was ready for three beam tests performed in 2022 and 2023. The test beam data are currently under analysis, and the results are expected to deepen our understanding of hadron showers, validate the concept of the PFA, and ultimately refine the design of the CEPC detector.</p>

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Development of the CEPC analog hadron calorimeter prototype

  • 期刊论文

  • 发表日期：

    2026年6月17日

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  • Yu-Kun Shi,
  • An-Shun Zhou,
  • Hao Liu,
  • Jie-Chen Jiang,
  • Yan-Yun Duan,
  • Yun-Long Zhang,
  • Zhong-Tao Shen,
  • Jian-Bei Liu,
  • Bo-Xiang Yu,
  • Shu Li,
  • Hai-Jun Yang,
  • Yong Liu,
  • Liang Li,
  • Zhen Wang,
  • Si-Yuan Song,
  • De-Jing Du,
  • Jia-Xuan Wang,
  • Jun-Song Zhang,
  • Quan Ji

摘要

The Circular Electron-Positron Collider (CEPC) is a next-generation electron-positron collider that has been proposed for the precise measurement of the properties of the Higgs boson. To enhance boson separation and jet reconstruction, the baseline design of the CEPC detector was guided by the particle flow algorithm (PFA) concept. As one of the calorimeter options, the analog hadron calorimeter (AHCAL) was proposed. The CEPC AHCAL comprises a 40-layer sandwich structure using steel plates as absorbers and scintillator tiles coupled with silicon photomultipliers (SiPMs) as sensitive units. To validate the feasibility of the AHCAL option, a series of studies were conducted to develop a prototype. This AHCAL prototype underwent electronic and cosmic ray tests to assess its performance and ensure that it was ready for three beam tests performed in 2022 and 2023. The test beam data are currently under analysis, and the results are expected to deepen our understanding of hadron showers, validate the concept of the PFA, and ultimately refine the design of the CEPC detector.