TL;DR
This paper reviews the development and upgrades of BEPC, BEPCII, and BEPCII-U, and discusses the design and planning of the CEPC as a future Higgs factory in China.
Contribution
It provides a comprehensive overview of the progress and plans for the Chinese electron-positron collider projects leading to CEPC.
Findings
BEPCII achieved its luminosity goal in 2016.
BEPCII-U completed upgrade and started commissioning in 2025.
CEPC design and construction plans are in progress for 2025.
Abstract
In this paper BEPC, BEPCII and BEPCII-U have been briefly reviewed, which lay a good foundation of CEPC as a Higgs factory. BEPCII reached the designed luminos-ity goal of 10^33cm^-2s^-1 @1.89GeV on April 5, 2016. As an upgrade program of BEPCII, BEPCII-U has been com-pleted and started commissioning in March of 2025 with the luminosity goal as 3.7*10^32cm^-2s^-1 @2.8GeV. CEPC as Higgs factory has been reviewed on Engineering De-sign Report (EDR) status and plan for construction proposal to Chinese government in 2025.
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Taxonomy
TopicsSuperconducting Materials and Applications · Particle Accelerators and Free-Electron Lasers · Particle Detector Development and Performance