C-ADS强流质子直线加速器调谐系统测试分析  

Test and analysis of tuner system for C-ADS high current proton linac

作　　者：张磊 王锋锋[1] 刘鲁北 王若旭[1] 于培炎 高郑 张斌[1] Zhang Lei;Wang Fengfeng;Liu Lubei;Wang Ruoxu;Yu Peiyan;Gao Zheng;Zhang Bin(Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou730000,China;University of Chinese Academy of Sciences,Beijing100049,China)

机构地区：[1]中国科学院近代物理研究所,兰州730000 [2]中国科学院大学,北京100049

出　　处：《强激光与粒子束》2018年第12期92-98,共7页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(91426303)

摘　　要：调谐系统是C-ADS超导直线加速器不可或缺的一部分,在加速器运行过程决定了超导腔的运行频率,直接影响了粒子加速的效果。为了充分了解调谐系统的工作情况和分析调谐系统出现的问题,设计了实验对调谐系统进行全方位测试。首先对调谐器的杠杆机构和剪叉机构进行了力学分析,而后对半波长谐振(HWR)超导腔在不同状态下进行了电场模拟,得出设计的调谐力和调谐位移满足HWR腔频率调谐要求。最后通过详细实验,采用自动、手动等方式测试了恒温器CM1,CM2,CM3中超导腔调谐器工作时的线性度、回程差、直线单元部分的线性度及回程。结果显示:CM1的调谐器基本满足慢调谐需要,CM2存在1200步回程,主要原因在于直线单元部分;CM3中调谐器的回程差较大,线性度不高,需要进一步改进。Tuner system is the indispensable part of ADS high current proton superconducting linac.It influences the working frequency of superconducting cavity of particle accelerator.To completely understand the working situation of the tuner system and analyse the problems,experiments were fully conducted.The lever structure and scissor structure of tuner were analyzed first,then the electric field simulations of the HWR superconducting cavity under different conditions were performed,and it was concluded that the force of tuning and tuning displacement meet the frequency tuning requirements of HWR cavity.Finally,the linearity and return difference of the tuner and linear unit in thermostats CM1,CM2,and CM3were tested automatically and manually.The tuner of CM1basically meets the need of slow tuning.In the test result of CM2return of1200steps occurred,mainly due to the linear unit.The tuner of CM3has a large return difference and a little worse linearity that need further improvement.

关 键 词：C-ADS 调谐 频变 稳定 回程 

分 类 号：TL5[核科学技术—核技术及应用]