论文部分内容阅读
电子贮存环需要<5.0×10~(-10)托的超高真空以贮存电子束流。但贮存环的截面小,管道长,影响了泵的有效抽速和气压的均匀分布。在无束流运行时,气载沿管道均匀分布;贮存束流时,气载主要集中于弯段。因此,模拟贮存环的1/4段,获得无束流时的超高真空,为贮存环设计提供实验依据是十分必要的。本装置是原设计的40OMeV不锈钢贮存环的1/4段,真空室内表面未经严格处理。测量规管与真空计经副标准校准。目前,系统最低平均气压已达2.0×10~(-10)托。
Electronic storage rings require <5.0 x 10 ~ (-10) torr ultra-high vacuum to store the electron beam. However, the cross section of the storage ring is small and the length of the pipe is long, affecting the effective pumping speed of the pump and the even distribution of air pressure. In the no-beam operation, the air-borne load is evenly distributed along the pipeline. When the beam is stored, the air-load mainly concentrates on the bend. Therefore, to simulate the 1/4 section of the storage ring and obtain the ultrahigh vacuum without beam current, it is necessary to provide the experimental basis for the design of the storage ring. This device is the original design of 40OMeV stainless steel storage ring 1/4, the vacuum chamber without the strict surface treatment. Measurement Regulation and Gauge Sub-Standard Calibration. At present, the system has reached a minimum average pressure of 2.0 × 10 ~ (-10) Torr.