STUDY ON HELIUM PURIFICATION TECHNOLOGY APPLIED IN AMS CRYOGENIC GROUND EQUIPMENT SYSTEM

Requirements of helium purity applied in AMS cryogenic ground supporting equipment（CGSE） are analyzed.According to the helium purification characteristics,three traditional technologies,cryogenic fractionation,adsorption and membrane separation are compared.Some disadvantages that cannot satisfy the requirements of CGTSE are put forward.Then the performance of metallic wiremesh filter is analyzed and is thought to be an applicable method.