Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2020, Vol. 31 ›› Issue (10): 103 doi: 10.1007/s41365-020-00808-4

• ACCELERATOR, RAY AND APPLICATIONS • Previous Articles     Next Articles

Train probe for beam diagnostics of the SC200 superconducting cyclotron

Le-Xing Hu1,2 • Kai-Zhong Ding1 • Yun-Tao Song1 • Yu-Cheng Wu3 • Kai Yao3   

  1. 1 Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
    2 University of Science and Technology of China, Hefei 230026, China
    3 Hefei CAS Ion Medical and Technical Devices Co., Ltd, Hefei 230088, China
  • Received:2020-06-10 Revised:2020-09-07 Accepted:2020-09-09
  • Contact: Kai-Zhong Ding
  • Supported by:
    This work was supported by the funding of the CN-RU cooperation cyclotron design (No. 1604b0602005).
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Le-Xing Hu, Kai-Zhong Ding, Yun-Tao Song, Yu-Cheng Wu, Kai Yao. Train probe for beam diagnostics of the SC200 superconducting cyclotron.Nuclear Science and Techniques, 2020, 31(10): 103     doi: 10.1007/s41365-020-00808-4

Abstract: The SC200 proton therapy system commissioned by the Hefei CAS Ion Medical and Technical Devices Co., Ltd. (HFCIM; Hefei, China) and the Joint Institute for Nuclear Research (JINR; Dubna, Russia) has made significant progress. A main radial beam diagnostic system (MRBDS) equipped with a new type of train probe was developed to satisfy the requirements of beam diagnosis. In this paper, the detailed design of the mechanical structure and electronics system of the MRBDS is presented. The electronics system, which includes hardware and software components, was tested and calibrated. The results show that measurement errors can be significantly reduced by the designed calibration procedures. The repeatability of the mechanical structure was also verified, and the experimental results indicate that the unidirectional repeatability of the positioning is better than 0.3 mm. Finally, the MRBDS was used to measure the phase lag of the particles in the beam, and the results showed a high degree of agreement with theoretical calculations, which proved the applicability and high efficiency of the MRBDS.

Key words: Train probe, Beam diagnostic, Cyclotron, Measurement and calibration, Commissioning