用于激光尾波场中电子束电荷测量的积分束流仪标定  

Integrating current transformer calibration for charge measurement of electron beam generated in laser wakefield acceleration

作　　者：董克攻[1,2] 朱斌[2] 吴玉迟[2] 苏春晓[2] 于瑞珍[2] 谷渝秋[2] 王晓方[1] 

机构地区：[1]中国科学技术大学,近代物理系,中国科学院,基础等离子体物理重点实验室,合肥230026 [2]中国工程物理研究院,激光聚变研究中心,高温高密度等离子体物理国防科技重点实验室,四川绵阳621900

出　　处：《强激光与粒子束》2010年第12期2819-2823,共5页High Power Laser and Particle Beams

基　　金：国家自然科学基金重点项目(10535030);国家自然科学基金项目(10876039);国家自然科学基金青年科学基金项目(10905051)

摘　　要：利用数字信号发生器及示波器对积分束流仪(ICT)的输入输出特性进行了标定,给出了不同脉冲宽度及幅度的输入信号与ICT输出结果的电荷量比值关系、输入脉冲对ICT的输出脉冲宽度的影响以及ICT对连续脉冲信号的输出响应等。标定结果显示:ICT的输入输出满足很好的线性关系;当输入连续脉冲的间隔小于一定程度时,ICT将会视为一个信号输出;ICT的输出脉冲形状及脉冲宽度与输入信号的形状及幅度无关。This paper presents the calibration of the input-output characteristic of integrating current transformer(ICT) by digital signal generation and oscilloscope, gives the ratio of input and output of the calibrated ICT under different input pulse durations and amplitudes, the effect of input pulse duration on the ICT output pulse duration, the response of the ICT to the consecutive input pulses. The calibration reveals that the relation between input and output of ICT is linearity, and the ICT will output one signal when the interval of the successive signals is very small, and also the shape and duration of the output are independent of that of the input signal.

关 键 词：激光尾波场 电子束 电荷测量 积分 束流 标定 electron beam charge measurement calibration 输入输出特性 输入信号 脉冲宽度 ICT 连续脉冲 数字信号发生器 信号输出 线性关系 输出响应 输出结果 脉冲形状 

分 类 号：O4[理学—物理]