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ZHONG Jun-Qing, LÜ Yin-Long, YIN Zhi-Guo, ZHANG Tian-Jue, CHU Cheng-Jie, WANG Chuan, WANG Zhen-Hui, XING Jian-Sheng, LI Zhen-Guo, LIN Jun, GE Tao, WU Long-Cheng, AN Shi-Zhong, YAO Hong-Juan, JIA Xian-Lu, WEI Su-Min, ZOU Jian, WANG Feng and CAI Hong-Ru. Mapping System, Magnetic Measurement and Shimming in CRM Cyclotron[J]. Chinese Physics C, 2008, 32(S1): 56-58.
ZHONG Jun-Qing, LÜ Yin-Long, YIN Zhi-Guo, ZHANG Tian-Jue, CHU Cheng-Jie, WANG Chuan, WANG Zhen-Hui, XING Jian-Sheng, LI Zhen-Guo, LIN Jun, GE Tao, WU Long-Cheng, AN Shi-Zhong, YAO Hong-Juan, JIA Xian-Lu, WEI Su-Min, ZOU Jian, WANG Feng and CAI Hong-Ru. Mapping System, Magnetic Measurement and Shimming in CRM Cyclotron[J]. Chinese Physics C, 2008, 32(S1): 56-58. shu
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Received: 2008-01-10
Revised: 1900-01-01
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Mapping System, Magnetic Measurement and Shimming in CRM Cyclotron

    Corresponding author: ZHONG Jun-Qing,

Abstract: The Central Region Model (CRM) is a compact H cyclotron. Because of the intrinsic asymmetry of the magnet, its machining and assembly are very complicated. To guarantee the magnet field distribution, it is necessary to measure and shim the magnetic field. This paper presents a study on the design and use of the mapping system based on the Hall Effect and the re-machining of
shimming bars after analyzing the magnetic field measurement data to achieve the isochronous field and good vertical focusing frequency. The method to effectively reduce the amplitude of the 1st harmonic by shimming bars 1s also introduced.

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