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加速器驱动次临界系统注入器Ⅰ,包括ECR离子源、低能传输线、射频四极加速单元、中能传输段和超导腔,注入器Ⅰ出口能够获得能量10 MeV的强流质子束流.为了调束和运行的需要,注入器Ⅰ将安装束流位置测量、束流截面测量、束流流强测量、束流发射度和能量测量,以及束流损失测量等束流参数测量装置.介绍了这些束流测量系统设计及其他方面的一些考虑.“,”The injector Ⅰ of China Accelerator Driven Subcritical System (CADS) is composed of an ECR ion source,a low energy beam transport line,a radio frequency quadrupole accelerator,a medium energy beam transport line and cryomodules with SRF cavities to boost the beam energy up to 10 MeV.The injector linac will be equipped with beam diagnostics to measure the beam position,the transverse profile and emittance,the beam energy as well as beam current and beam losses.Though many of these are conventional designs,they can provide efficient operation of injector linac.This paper gives an overview of CADS linac beam instrumentation and a discussion of the system design.