100 MeV强流质子回旋加速器超高真空系统研制

Development of Vacuum System for 100 MeV High Intensity Proton Cyclotron

中国原子能科学研究院建成了一台强流质子回旋加速器,其引出能量为100 MeV,流强为200μA。为减小粒子加速时束流损失的目的,其粒子加速腔内工作真空度要求为6.7×10^(-6) Pa。由于是紧凑型加速器结构,该加速器能提供给真空系统利用的通路有限,为此主真空系统设计为内置式低温冷板结合商业低温泵的排气方案以增加系统整体的抽气能力。设计、加工完成的真空系统已成功应用于100 MeV强流质子回旋加速器上,为加速器的束流调试和正常供束提供了有利的保障。

China Institute of Atomic Energy has built a high intensity proton cyclotron with extracted beam energy of 100 MeV and designed current of 200μA.In order to reduce the beam loss during particle acceleration,the working vacuum in the particle acceleration chamber is required to be 6.7×10-6 Pa.Because it’s compact structure,the pump of vacuum system provided by the accelerator is very limited.In order to increase the overall pumping capacity of the system,the main vacuum system was designed as a plug-in cryopanel combined with an external cryogenic pump.The designed vacuum system was installed in 100 MeV high intensity proton cyclotron.It provides a favorable guarantee for beam adjustment and normal beam supply of the accelerator.