低电压太赫兹回旋管电调谐特性研究
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- 英文论文题名：Study of electronic tuning for low-voltage terahertz gyrotron
- 论文作者：潘石 ; 杜朝海 ; 戚向波 ; 朱娟峰 ; 刘濮鲲
- 英文论文作者：Shi Pan ; Chao-Hai Du ; Xiang-Bo Qi ; Juan-Feng Zhu ; Pu-Kun Liu ; School of Electronics Engineering and Computer Science ; Peking University
- 年：2017
- 作者机构：北京大学信息科学技术学院;
- 论文关键词：低电压 ; 太赫兹 ; 回旋管 ; 电调谐 ; "锁频效应"
- 英文论文关键词：low-voltage ; terahertz ; gyrotron ; electronic tuning ; "frequency-locked phenomenon"
- 会议召开时间：2017-05-08
- 会议录名称：2017年全国微波毫米波会议论文集（中册）
- 英文会议录名称：Proceedings of 2017 National Conference on Microwave and Millimeter Waves(NCMMW2017)
- 语种：中文
- 分类号：TN12
- 学会代码：ZDWB
- 会议名称：2017年全国微波毫米波会议
- 会议地点：中国浙江杭州
- 主办单位：中国电子学会
- 学会名称：中国电子学会微波分会
- 页数：4
- 文件大小：1152k
- 原文格式：D
- 会议级别：全国
摘要
本文从磁控注入式电子枪及互作用电路两方面,研究了0.25 THz低电压回旋管的电调谐特性。研究结果表明,当工作磁场稳定在9 T时,单阳极磁控注入式电子枪的电子注横纵速度比随电压增加而增加;速度离散在一定的电调谐范围内起伏,当加速电压突破某一阈值后,速度离散随电压的增加而迅速增大。互作用电路在低阶与高阶轴向模式工作区均具有高效率工作潜力,在特定磁场条件下会出现"锁频效应"。基于这种效应产生的功率可控的点频脉冲序列有望被应用于动态核极化增强核磁共振等医学检测技术中。
The research about electronic tuning property of a 0.25 THz low-voltage gyrotron is presented in this paper in two aspects, magnetron injection gun(MIG) and interaction circuit. The results indicate that in single-anode MIG with stable 9 T magnetic field, the pitch factor increases as voltage increasing, and the velocity spread fluctuates in certain tuning range and increases sharply as the accelerating voltage breaks through one threshold. The interaction circuit has potential of high efficiency interaction in both low-axial and high-axil modes. The "frequency-locked phenomenon" is also discovered for special magnetic field. The single-frequency pulse sequence with tunable output power derived from above phenomenon could be useful for dynamic nuclear polarization-nuclear magnetic resonance, as well as other medical test technologies.
The research about electronic tuning property of a 0.25 THz low-voltage gyrotron is presented in this paper in two aspects, magnetron injection gun(MIG) and interaction circuit. The results indicate that in single-anode MIG with stable 9 T magnetic field, the pitch factor increases as voltage increasing, and the velocity spread fluctuates in certain tuning range and increases sharply as the accelerating voltage breaks through one threshold. The interaction circuit has potential of high efficiency interaction in both low-axial and high-axil modes. The "frequency-locked phenomenon" is also discovered for special magnetic field. The single-frequency pulse sequence with tunable output power derived from above phenomenon could be useful for dynamic nuclear polarization-nuclear magnetic resonance, as well as other medical test technologies.
引文
1 K.R.Chu,The electron cyclotron maser,Rev.Modern Phys.,2004,76(2):489-540.
2 M.K.Hornstein et al.,Efficient Low-Voltage Operation of a CW Gyrotron Oscillator at 233GHz,IEEE Trans.Plasma Sci.,2007,35(1):27-30.
3 M.Y.Glyavin et al.,Low-voltage gyrotrons,Phys.Plasmas,2013,20:033103.
4 X.B.Qi et al.,Terahertz Broadband-Tunable Minigyrotron With a Pulse Magnet,IEEE Trans.Electron Devices,2017,64(2):527-535.
5 C.P.Yuan et al.,Magnetron injection gun for a broadband gyrotron backward-wave oscillator,Physics of Plasma,2009,16:073109.
6 C.H.Du et al.,Broadband Tunable Pre-Bunched Electron Cyclotron Maser for Terahertz Application,IEEE Trans.Terahertz Sci.Technol.,2015,5(2):236-243.
2 M.K.Hornstein et al.,Efficient Low-Voltage Operation of a CW Gyrotron Oscillator at 233GHz,IEEE Trans.Plasma Sci.,2007,35(1):27-30.
3 M.Y.Glyavin et al.,Low-voltage gyrotrons,Phys.Plasmas,2013,20:033103.
4 X.B.Qi et al.,Terahertz Broadband-Tunable Minigyrotron With a Pulse Magnet,IEEE Trans.Electron Devices,2017,64(2):527-535.
5 C.P.Yuan et al.,Magnetron injection gun for a broadband gyrotron backward-wave oscillator,Physics of Plasma,2009,16:073109.
6 C.H.Du et al.,Broadband Tunable Pre-Bunched Electron Cyclotron Maser for Terahertz Application,IEEE Trans.Terahertz Sci.Technol.,2015,5(2):236-243.