Optimal design of the vacuum interlock and monitor systems for BSRF soft X-ray endstation

doi:10.7523/j.ucas.2021.0069

Abstract

Abstract: Beijing synchrotron radiation facility (BSRF) 4B7B soft X-ray endstation is an ultra-high vacuum system, which is connected to the upstream beamline through an electromagnetic plug-in valve. Scientific research users are prone to misoperation when changing samples in experiment. When valve is not closed, vacuum system is vented and equipment is damaged. In order to avoid vacuum accidents, this article proposes to optimize the original manual protection measures and design vacuum safety interlock protection systems. Vacuum gauge, pneumatic angle valve, and electromagnetic flapper valve are interlocked and controlled by electrical components, aiming to improve the convenience and reliability of user's operation on the basis of ensuring the vacuum safety of endstation when user changes samples. The safety interlocking protection system control cabinet was confirmed to meet the expected design requirements after many commissioning inspections and trial runs after landing, and was formally applied in soft X-ray calibration experiment, effectively ensuring the safety and reliability of equipment during user operation. In addition, application prospect of the safety interlock protection system in beamline of high energy photon source (HEPS) in the future is discussed in this article, and engineering design experience is provided for construction of vacuum interlocking protection system of HEPS beamline.

Key words: synchrotron radiation endstation, relay control, vacuum gauge, interlocking protection system

CLC Number:

LI Jialiang, LIU Shuhu, SHANG Congjian, WANG Fei. Optimal design of the vacuum interlock and monitor systems for BSRF soft X-ray endstation[J]. Journal of University of Chinese Academy of Sciences, 2023, 40(5): 677-686.

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