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Precise magnetic field control of the scanning magnets for the APTRON beam delivery system

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Abstract

A design for precise scanning magnetic field control for the beam delivery system of the Shanghai Advanced Proton Therapy Facility (APTRON) is presented in this paper. With a novel feedforward algorithm to compensate for magnet hysteresis, the scanning magnetic field can be controlled to within a precision of ± 2.5 G. The main advantage of the proposed feedforward algorithm is that the average settling time is shorter compared with that of a conventional feedback algorithm with acceptable tolerance.

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Acknowledgements

We would like to thank Dr. Rui Li and Dr. Qing-Song Tan of the power supply group, and, Dr. Lian-Hua Ou-Yang and Dr. Bo-Lei Jia of the magnet group for their support.

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Authors and Affiliations

  1. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China

    Chun-Hui Miao, Ming Liu, Chong-Xian Yin & Zhen-Tang Zhao

  2. University of Chinese Academy of Sciences, Beijing, 100049, China

    Chun-Hui Miao

Authors
  1. Chun-Hui Miao
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  2. Ming Liu
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  3. Chong-Xian Yin
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  4. Zhen-Tang Zhao
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Corresponding author

Correspondence to Zhen-Tang Zhao.

Additional information

This work was supported by the Youth Innovation Promotion Association CAS (No. 2016238).

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Miao, CH., Liu, M., Yin, CX. et al. Precise magnetic field control of the scanning magnets for the APTRON beam delivery system. NUCL SCI TECH 28, 172 (2017). https://doi.org/10.1007/s41365-017-0324-6

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  • DOI: https://doi.org/10.1007/s41365-017-0324-6

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