Study on ionization profile monitor

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

doi:10.11889/j.0253-3219.2017.hjs.40.110401

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Study on ionization profile monitor

NUCLEAR ELECTRONICS AND INSTRUMENTATION | 更新时间：2021-05-19

- Study on ionization profile monitor
- NUCLEAR TECHNIQUES Vol. 40, Issue 11, Article number: 110401(2017)
- 作者机构：
  
  中国科学院高能物理研究所粒子加速物理与技术重点实验室北京 100049
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China
- DOI：10.11889/j.0253-3219.2017.hjs.40.110401
  CLC： O571
- Received：23 January 2017，
  
  Revised：21 March 2017，
  
  Published：10 November 2017
- 稿件说明：
移动端阅览
Jun HE, Lin WANG, Xiaoyan ZHAO, et al. Study on ionization profile monitor[J]. Nuclear techniques, 2017, 40(11): 110401
DOI：

Jun HE, Lin WANG, Xiaoyan ZHAO, et al. Study on ionization profile monitor[J]. Nuclear techniques, 2017, 40(11): 110401 DOI： 10.11889/j.0253-3219.2017.hjs.40.110401.

摘要

针对强流质子加速器非拦截式的截面测量需求，开展了以剩余气体分子为基础的电离型截面探测器的研究工作。探索了电离信号强度的计算方法，利用CST（Computer Simulation Technology）电磁工作室对电场进行了优化设计，设计加工了一套应用于质子直线加速器的电离型截面探测器，该装置利用高压电极产生的电场引导电离产物，用微通道板放大电离信号，荧光屏和相机组成探测系统。该电离型截面探测器被安装于加速器驱动次临界系统（China Accelerator Driven Subcritical system，ADS）先导专项的注入器Ⅰ上，在线束流实验证明，该套设备工作稳定正常，实现了束流截面的非拦截式测量。

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.

关键词

Keywords

references

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