JACoW is a publisher in Geneva, Switzerland that publishes the proceedings of accelerator conferences held around the world by an international collaboration of editors.
TY - UNPB AU - Tian, Y. AU - Han, Q. AU - Shi, H. ED - Schaa, Volker R.W. ED - Bian, Lin ED - Chen, Zhichu ED - Dong, Yuhui ED - He, Ping TI - Vacuum System Design of HEPS Beamlines J2 - Proc. of MEDSI2023, Beijing, China, 06-10 November 2023 CY - Beijing, China T2 - International Conference on Mechanical Engineering Design of Synchrotron Radiation Equipment and Instrumentation T3 - 12 LA - english AB - Vacuum system is the basic component in High Energy Photon Source(HEPS) beamlines. Only when the optical devices in beamlines are operated in a high vacuum or even ultra-high vacuum environment, can avoid the carbon deposition of the optical mirror which might result in the optical reflectivity reduction, and reduce the absorption of synchrotron radiation light by residual gas. The purpose of vacuum system design is to obtain and maintain a reasonable vacuum degree to ensure the stable operation of the beamline. This article introduces the vacuum system design in HEPS beamlines from the aspects of pressure distribution calculation, vacuum material selection, vacuum acquisition, measurement equipment selection, vacuum system gas desorption analysis and vacuum equipment layout. The key point lies in using Mlflow software based on test particle Monte Carlo method to analyze and simulate the static pressure distribution which is without beam throughout the vacuum system and the dynamic pressure distribution after beam cleaning. PB - JACoW Publishing CP - Geneva, Switzerland ER -