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。
[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.
出处
《核技术》
CAS
CSCD
北大核心
2018年第2期31-37,共7页
Nuclear Techniques
基金
国家自然科学基金(No.11475204)、中国科学院战略性先导科技专项fNo.XDA03020000)资助
关键词
加速器驱动次临界系统
强流质子加速器
束流能量
快速电流变压器
正交采样
ADS, High intensity proton linear accelerator, Beam energy, Fast current transformer, In-phase and quadrature-phase sampling
