Nuclear Techniques ›› 2018, Vol. 41 ›› Issue (2): 20403-020403.doi: 10.11889/j.0253-3219.2018.hjs.41.020403


Beam phase and energy measurement system of ADS injector I

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

  1. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
  • Received:2017-09-06 Revised:2017-10-17 Online:2018-02-10 Published:2018-02-06
  • Supported by:
    Supported by National Natural Science Foundation of China (No.11475204) and Strategic Priority Research Program of Chinese Academy of Sciences (No.XDA03020000)

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.

Key words: ADS, High intensity proton linear accelerator, Beam energy, Fast current transformer, In-phase and quadrature-phase sampling

CLC Number: 

  • TL506