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中国科学院上海应用物理研究所 嘉定园区 上海 201800
Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Jiading Campus, Shanghai 201800, China
张俊强,男,1974年出生,2013年于中国科学院上海应用物理研究所获博士学位,研究方向为直线加速器的低电平控制
收稿日期:2015-10-15,
录用日期:2016-01-05,
纸质出版日期:2016-03-25
移动端阅览
张俊强, 刘亚娟, 钟少鹏, 等. 15-MeV电子直线加速器的低电平系统[J]. 核技术, 2016,39(3):030403
Junqiang ZHANG, Yajuan LIU, Shaopeng ZHONG, et al. Low level radio frequency system of 15-MeV electrons linac[J]. Nuclear techniques, 2016, 39(3): 030403
张俊强, 刘亚娟, 钟少鹏, 等. 15-MeV电子直线加速器的低电平系统[J]. 核技术, 2016,39(3):030403 DOI: 10.11889/j.0253-3219.2016.hjs.39.030403.
Junqiang ZHANG, Yajuan LIU, Shaopeng ZHONG, et al. Low level radio frequency system of 15-MeV electrons linac[J]. Nuclear techniques, 2016, 39(3): 030403 DOI: 10.11889/j.0253-3219.2016.hjs.39.030403.
15-MeV电子加速器驱动的光中子源装置(TMSR Photo-Neutron Source Phase 1
TPNS1)是专为钍基熔盐堆(Thorium Molten Salt Reactor
TMSR)核数据测量设计和建造的。为保证直线加速器提供稳定的、高品质的束流
开发了基于可编程逻辑门阵列(Field Programmable Gate Array
FPGA)技术的低电平控制系统
利用上下变频、IQ (In-phase and Quadrature)调制解调技术实现了直线加速器幅度和相位的反馈控制。经测试
幅度和相位的控制精度达到±0.4%
可达±0.6°。长时间的运行表明
整个数字化环路的响应时间快
稳定性好
满足中子源装置的运行要求。
Background:
2
The photo-neutron source driven by 15-MeV electrons linac in Thorium molten salt reactor (TMSR) program was designed f
or nuclear data measurement.
Purpose:
2
To ensure the linac to provide stable and high quality beam bunches
a low level radio frequency (LLRF) control system based on field programmable gate array (FPGA) was developed.
Methods:
2
LLRF realized digital amplitude and phase feedback control by using up-down converter
IQ (In-phase and Quadrature) modulator and demodulator techniques.
Results:
2
After commission
the control accuracy of amplitude and phase is less than
&
#177;0.4% and
&
#177;0.6
&
#176;
respectively.
Conclusion:
2
Long time running indicates that the whole digital control loop has the properties of fast time response and good stability
which meets the demand of photo-neutron facility.
王 宏伟 , 陈 金根 , 蔡 翔舟 , . 电子直线加速器驱动的 光中子源装置的研制 . 核技术 , 2014 . 37 ( 10 ): 100522 .
WANG Hongwei , CHEN Jingen , CAI Xiangzhou , . Development of photo-neutron facility driven by electron LINAC . Nuclear Techniques , 2014 . 37 ( 10 ): 100522 .
钟 少鹏 , 张 俊强 , 张 猛 , . EADSS 直线加速器射频系 统设计 . 中国科学院上海应用物理研究所 , 2012 .
ZHONG Shaopeng , ZHANG Junqiang , ZHANG Meng , . Technical design report of EADSS linac RF system . Shanghai Institute of Applied Physics, Chinese Academy of Sciences , 2012 .
张 志刚 , 赵 玉斌 , 徐 凯 , . 基于I/Q 解调原理的校准 方法及实验 . 核技术 , 2015 . 38 ( 3 ): 030102 .
ZHANG Zhigang , ZHAO Yubin , XU Kai , . Calibration method and experiment based on I/Q demodulation principle . Nuclear Techniques , 2015 . 38 ( 3 ): 030102 .
X6-400M . X6-400M user's manual . Innovative Integration , 2012 .
MIC-3714 . MIC-3714 user manual . Advantech Co., Ltd. , 2005 .
刘 熔 . BEPCⅡ次谐波聚束器低电平控制系统研制 . 北京:中国科学院研究生院 , 2010 .
LIU Rong . Develop the LLRF systems for sub-harmonic bunchers of BEPC Ⅱ linac . Beijing:Graduate University of Chinese Academy of Sciences , 2010 .
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