Beam phase and energy measurement system of ADS injector Ⅰ

Junhui YUE; Penghui LYU; Jianshe CAO; Yanfeng SUI; Shujun WEI; Qiang YE; Huizhou MA; Ying ZHAO; Yaoyao DU; Fang LIU

doi:10.11889/j.0253-3219.2018.hjs.41.020403

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Beam phase and energy measurement system of ADS injector Ⅰ

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

- Beam phase and energy measurement system of ADS injector Ⅰ
- NUCLEAR TECHNIQUES Vol. 41, Issue 2, Article number: 020403(2018)
- 作者机构：
  
  中国科学院高能物理研究所北京 100049
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China;Strategic Priority Research Program of Chinese Academy of Sciences
- DOI：10.11889/j.0253-3219.2018.hjs.41.020403
  CLC： TL506
- Received：06 September 2017，
  
  Revised：17 October 2017，
  
  Published：10 February 2018
- 稿件说明：
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Junhui YUE, Penghui LYU, Jianshe CAO, et al. Beam phase and energy measurement system of ADS injector Ⅰ[J]. Nuclear techniques, 2018, 41(2): 020403
DOI：

Junhui YUE, Penghui LYU, Jianshe CAO, et al. Beam phase and energy measurement system of ADS injector Ⅰ[J]. Nuclear techniques, 2018, 41(2): 020403 DOI： 10.11889/j.0253-3219.2018.hjs.41.020403.

摘要

针对加速器驱动次临界系统（Accelerator Driven Sub-critical System，ADS）注入器Ⅰ束流调试要求，需要精确测量束流的相位和能量。本文研究束流的相位和能量高精度测量方法，设计了基于快速电流变压器（Fast Current Transformer，FCT）信号的相位及能量测量系统。该系统包括FCT探头、前端电子学、数据采集和处理三个部分，通过正交采样的方式实现束流的相位测量，然后利用飞行时间法实现束流能量的测量。测试结果表明，该系统在实验室测试相位分辨率为±0.8°，在线测试相位分辨率为±2°，满足直线加速器的设计要求。

Abstract

Background

Injector Ⅰ is a key component of accelerator driven sub-critical system (ADS)

phase and energy of the beam need to be known by the operator.

Purpose

This study aims to precisely get and control the beam phase and energy of ADS and develop a beam energy measurement system based on fast current transformer (FCT) signal.

Methods

FCT detector

signal processing electronics and data acquisition system are designed and integrated to implement the measurement system. The beam energy is measured in terms of beam phase which is obtained by the in-phase and quadrature-phase sampling. The precise phase measurement of the high-frequency signal is realized by the down-conversion technique.

Results

Phase resolutions obtained in the laboratory and on-line operation were ±0.8° and ±2°

respectively.

Conclusion

The system proposed in this study meets the design requirements of the linear accelerator.

关键词

Keywords

references

Tang J Y, Cheng P, Geng H P, et al. Conceptual physics design for the China-ADS Linac[R]. THPSM04, NA-PAC, 2013.

Meng C, Cao J S, Du Y Y, et al. Beam commissioning of C-ADS injector-Ⅰ RFQ accelerator[C]. IPAC2015, Richmond, VA, USA, 3827-3829. http: //inspirehep. net/record/1418671

Z H Li , P Cheng , H P Gen , . Physics design of an accelerator for an accelerator-driven subcritical system . Physical Review Special Topics-Accelerators and Beams , 2013 . 16 080101 DOI: 10.1103/PhysRevSTAB.16.080101 http://doi.org/10.1103/PhysRevSTAB.16.080101 .

Yin C X, Liu D K, Yu L Y. Digital phase control system for SSRF linac[C]. Proceedings of ICALEPCS07, Knoxville, Tennessee, USA, 2007. http: //ir. ihep. ac. cn/handle/311005/249489

Ikegami M, Kondo Y, Ueno A. RF tuning schemes for J-PARC DTL and SDTL[C]. Proceedings of Linac, 2004. http: //cds. cern. ch/record/925533

赵雷 , 刘树彬 , 安琪 . 散裂中子源质子加速器束流相位和能量测试系统设计探讨 . 核电子学与探测技术 , 2009 . 29 ( 5 ): 1005 - 1011 . https://mall.cnki.net/lunwen-2009111178.nh.html .

Lei ZHAO , Shubin LIU , Qi AN . The research of the beam phase and energy test system for DTL in the proton accelerator of CSNS . Nuclear Electronics & Detection Technology , 2009 . 29 ( 5 ): 1005 - 1011 . https://mall.cnki.net/lunwen-2009111178.nh.html .

Kim H S, Cho Y S, Kwon H J, et al. 100-MeV proton beam phase measurement by using stripline BPM[C]. LINAC, Geneva, Switzerland, 2014: 656-658. http: //inspirehep. net/record/1363485/

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