强流脉冲电子束特性对相对论速调管相位的影响分析

doi:10.3969/j.issn.0372-2112.2017.08.021

电子学报 ›› 2017, Vol. 45 ›› Issue (8): 1957-1963.DOI: 10.3969/j.issn.0372-2112.2017.08.021

所属专题：微波器件

强流脉冲电子束特性对相对论速调管相位的影响分析

袁欢^1,2, 黄华², 刘振帮², 孟凡宝², 陈昌华³

1. 中国工程物理研究院研究生院, 北京 100088;
2. 中国工程物理研究院应用电子学研究所高功率微波技术重点实验室, 四川绵阳 621900;
3. 西北核技术研究所高功率微波技术重点实验室, 陕西西安 710024

收稿日期:2016-05-30 修回日期:2016-10-21 出版日期:2017-08-25
- 作者简介:
- 袁欢,男,1990年1月出生于湖北武汉,现为中国工程物理研究院研究生院博士研究生,研究方向为高功率微波技术.E-mail:yuanhuan50@qq.com;黄华,男,1970年10月出生于重庆合川,博士研究员,现在中国工程物理研究院应用电子学研究所工作,主要从事高功率微波源研究工作.E-mail:hhua0457@163.com
- 基金资助:
- 国家自然科学基金 (No.11475158）; 中国工程物理研究院科学技术发展基金 (No.2015B0402096）

Impact on Phase of Relativistic Klystron Amplifier by Intense Current Pulse Electron Beam Property

YUAN Huan^1,2, HUANG Hua², LIU Zhen-bang², MENG Fan-bao², CHEN Chang-hua³

1. Graduate Shool of China Academy Engineetying Physics, Beijing 100088, China;
2. Science and Technology on High Power Microwave Institute of Applied Electronics of CAEP, Mianyang, Sichuan 621900, China;
3. Science and Technology on High Power Microwave Laboratory, Northwest Institute of Nuclear Technology, Xi'an, Shaanxi 710024, China

Received:2016-05-30 Revised:2016-10-21 Online:2017-08-25 Published:2017-08-25
- Supported by:
- National Natural Science Foundation of China (No.11475158); Science and Technology Development Fund of China Academy of Engineering Physics (No.2015B0402096)

摘要/Abstract

摘要： 相位特性是强流相对论速调管放大器（RKA）的一个重要特征参数，而由高功率脉冲功率源产生的具有一定前沿的强流相对论电子束在驱动RKA时，会使得输出微波出现较大波动，影响RKA的输出微波相位稳定性及其应用.论文从强流脉冲电子束前沿分布状态出发，理论分析电子束前沿束流能量变化及其激励的腔体杂频对输出相位的影响，同时开展粒子模拟研究以及实验研究.研究结果表明：脉冲前沿段电子束能量变化将导致输出微波相位持续变化；此外，电子束前沿将激励杂模，导致输出微波相位在脉冲前沿段及平顶段初期持续抖动，在腔体参数一定条件下，脉冲前沿能量变化率越大，相位波动幅值越大，持续时间越长，通过减小杂频振荡频率处腔体的Q值可以有效缩短输出相位抖动时间，提高输出相位稳定性.

关键词: 相对论速调管放大器, 相位特性, 脉冲前沿, 高功率微波

Abstract: The phase property is an important parameter of the intense relativistic klystron amplifier (RKA).But the intense relativistic electric beams (IREBs) with a long rise time in terms of high-power pulse power source will cause the output microwave phase jitter when driving the RKA,which limits the RKA's applications.Based on the intense current pulse electron beam properties,the impacts on output microwave phase by the increase of the electron beams' energy in the front section of the pulse and the spurious frequency caused by energy change in the cavities are analyzed through the theory.And then some PIC simulations and experiments are studied.It is found that the increase of the electron beams' energy in the front section lead to the output microwave phase continually changing.Besides,the spurious frequency in the cavity caused by the front section of the electron beams,which lead to the output microwave phase continually jitter in the front and the early of the stable section of the pulse.In the condition of cavities' parameters are constant,the output microwave phase is significantly affected by the rate of electron beams energy in the front section:when the rate of electron beams energy increase,the amplitude of the phase jitter and the jitter duration increase.And the stabilization of the phase can be increased by reducing the Q of the cavity at the frequency point of the spurious frequency.

Key words: relativistic klystron amplifier, phase characteristic, forward voltage, high power microwave

中图分类号:

TN122

袁欢, 黄华, 刘振帮, 等. 强流脉冲电子束特性对相对论速调管相位的影响分析[J]. 电子学报, 2017, 45(8): 1957-1963.

YUAN Huan, HUANG Hua, LIU Zhen-bang, et al. Impact on Phase of Relativistic Klystron Amplifier by Intense Current Pulse Electron Beam Property[J]. Acta Electronica Sinica, 2017, 45(8): 1957-1963.

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强流脉冲电子束特性对相对论速调管相位的影响分析

Impact on Phase of Relativistic Klystron Amplifier by Intense Current Pulse Electron Beam Property

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