CAJ | 학술논문

束流收集器是加速器末端吸收高能粒子束的主要部件。本文针对中国工程物理研究院正在研制的自由电子激光相干强太赫兹源（FEL‐THz）装置8 MV／5 mA准连续电子束设计束流收集器，其内表面吸收平均功率达40 kW。通过对收集器结构优化和四级磁铁对电子束扩束，将收集器长度控制在1.2 m以内。优化收集器水冷结构及水流速度，使收集器的温度控制在355 K ，满足高平均功率FEL‐T Hz装置的使用要求。
속류수집기시가속기말단흡수고능입자속적주요부건。본문침대중국공정물리연구원정재연제적자유전자격광상간강태혁자원（FEL‐THz）장치8 MV／5 mA준련속전자속설계속류수집기，기내표면흡수평균공솔체40 kW。통과대수집기결구우화화사급자철대전자속확속，장수집기장도공제재1.2 m이내。우화수집기수랭결구급수류속도，사수집기적온도공제재355 K ，만족고평균공솔FEL‐T Hz장치적사용요구。
The beam dump is the primary assembly used at the end of the accelerator to absorb high power electrons .In this paper ,a beam dump was designed for 8 MV/5 mA CW electron beam of the terahertz free electron laser (FEL‐T Hz) facility in China Acad‐emy of Engineering Physics , whose inner surface absorbed average power is up to 40 kW .The beam dump design was based on a 1.2 m long copper cone whose inner sur‐face absorbs the beam .The beam dump cooling structure and flow rate were optimized , so that the beam dump temperature was controlled at 355 K ,to meet the requirements of high average power FEL‐T Hz facility .