Speaker
Description
CIADS is short for China Initiative Accelerator Driven System, consists of intense-beam proton accelerator,spallation target and subcritical core.The multistage differential pumping system is a part of the large and complex vacuum system of CIADS which is between intense-beam proton accelerator and spallation target. The working pressure of spallation target is 5.0E4Pa for He,however, the pressure of beam line which links the accelerator is 1.0E-6Pa.So ensuring the proton bean to bombard the spallation target and obtaining the pressure vary from 5.0E4Pa to1.0E-6Pa is an important research task.
The multistage differential pumping system with ten orders of magnitude pressure differential is obtained, of which working pressure spans all areas of vacuum, including viscous, transition and molecular flows. Based on the principle of differential vacuum system, this poster introduces the choices of materials, vacuum measurement elements and pumping system.In a few days, the availability of pumping system will be tested. The calculation and the design of ten-stage differential vacuum system has been finished already.
