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Analysis and mitigation of bump magnetic field tracking errors in a multiturn injection system

Radiation Detection Technology and Methods 2023年第4期7卷 531-544页

作者： Shuaishuai Zhang Guodong Shen Weiping Chai Jingjing Zhang Hongliang Guo Lingxiao Hou Liping Yao Shuang Ruan Jiancheng Yang Institute of Modern Physics Chinese Academy of SciencesLanzhou730000China University of Chinese Academy of Sciences Beijing100049China

Purpose The Space Environment Simulation and Research Infrastructure(SESRI)is a cluster of accelerators designed to simulate the cosmic radiation environment by generating particles of various types and *** these accelerators,a synchrotron in the 300 MeV proton and heavy ion accelerator complex utilizes a multiturn injection scheme with four bump magnets to accumulate proton and heavy ion beams ***,the bump magnetic field experiences a rapid drop rate of up to 1000 T/s,inevitably leading to a deviation(field tracking error)from the ideal magnetic *** injection efficiency and particle distribution are significantly affected by this field tracking error,as evaluated by the ACCSIM *** During the device testing stage,the sources of field tracking errors were identified by analysis of the bump power supplies and the field of the *** techniques were then implemented to reduce the field tracking error from[Math Processing error]to[Math Processing error]throughout the entire power supply,transmission cable,and magnet *** Moreover,the successful injection and accumulation of beams during the operational phase of the synchrotron confirmed the effectiveness of the proposed mitigation ***,a magnetic field measurement system was developed to monitor the magnetic field tracking error *** The combination of the field tracking error mitigation methods and the measurement system provides valuable guidance for optimizing the magnetic fields with rapid drop rates.

关键词： SESRI Multiturn injection Bump magnet field tracking error mitigation

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