Nuclear Techniques ›› 2017, Vol. 40 ›› Issue (11): 110401-110401.doi: 10.11889/j.0253-3219.2017.hjs.40.110401


Study on ionization profile monitor

HE Jun, WANG Lin, ZHAO Xiaoyan, YU Lingda, SUI Yanfeng, YUE Junhui, CAO Jianshe   

  1. Key Laboratory of Particle Acceleration Physics and Technology, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
  • Received:2017-01-23 Revised:2017-03-21 Online:2017-11-10 Published:2017-11-08
  • Supported by:
    Supported by National Natural Science Foundation of China (No.11305186)

Abstract: Background: Beam profile determination at high intensity hadron accelerators implies the usage of non-invasive methods. Purpose: This study aims to develop the profile measurement technology for high intensity proton accelerator. Methods: The transverse profile of the beam was monitored via detecting the ionization products produced by the collision of proton with residual gas in the vacuum pipe. High-voltage electrodes were used for producing electrical field to guide ionized offspring whilst microchannel plates (MCP) was employed to amplify the signal. The screen and charge-coupled device (CCD) system were used for position detection. Results & Conclusion: An ionization profile monitor is designed and manufactured, which has been installed on the China accelerator driven subcritical system (ADS) injector I. The signal intensity of ionization products matches the theory's expectation. Experiments result shows that it is a useful tool to measure the profile of proton beam.

Key words: Proton accelerator, Non-invasive, Ionization, Profile measurement, Electrical field optimization

CLC Number: 

  • O571