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Development and Application of a Medium Power, High Quality, Submillimeter Wave Gyrotron

中功率、高质量亚毫米波回旋管的研制与应用

基本信息

批准号：
04405004
负责人：
IDEHARA Toshitake
金额：
$ 14.72万
依托单位：
Fukui University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (A)
财政年份：
1992
资助国家：
日本
起止时间：
1992 至 1994
项目状态：
已结题

项目摘要

1. Development of High Frequency Gyrotrons Using the Second and the Third Harmonic Operations(1) A demountable gyrtron using a 12 T superconducting magnet has been constructed and operated under the second and the third harmonic resonances. The maximum frequencies of 636 GHz and 444 GHz at the second and the third harmonic resonances, respectively. The output powers lie in the range from 100 to 700 W.The gyrotron is useful for plasma diagnostics and studies of materials.(2) A high frequency gyrotron consisting of a 17 T superconducting magnet and a tipped-off tube has been constructed and tested. The gyrotron has attained frequency tunabilities from 159 to 430 GHz at the fundamental operations and from 336 to 850 GHz at the second harmonic operations. The maximum frequency of 850 GHz is the new world record for high frequency operation of gyrotron.2. Amplitude and Frequency Modulations of Submillimeter Wave GyrotronsBoth modulations of gyrotrons are important for applications to wide fields as radiation sources. Our submillimeter wave gyrotrons have achieved both sinusoidal-wave and square-wave modulations in the frequency range from 1 kHz to 600 kHz. The gyrotrons also have achieved frequency step switchings between 257 GHz and 260 GHz (switching between two fundamental modes) and between 223 GHz and 444 GHz (switching between a fundamental mode and a second mode). This is the first experiment of frequency switching of gyrotron.We have applied our gyrotrons to submillimeter wave spectroscopy and studied on the following fields.3. Mode competitions and cooperations between the fundamental and the harmonic mode operations, 4. Quasi-optical devices applied for submillimeter wave gyrotrons, 5. Plasma scattering measurement using a gyrotron as a power source, 6. Millimeter wave ESR experiment using a gyrotron as a power source.

1.二次谐波和三次谐波高频回旋管的研制（1）研制了一个12T超导磁体的可拆卸回旋管，并在二次谐波和三次谐波下工作。在二次和三次谐波共振处的最大频率分别为636 GHz和444 GHz。的输出功率位于从100到700 W的范围内。回旋管是有用的等离子体诊断和材料的研究。(2)本文介绍了由17T超导磁体和可倾翻管组成的高频回旋管的结构和性能。回旋管的频率调谐范围在159至430 GHz的基波操作和336至850 GHz的二次谐波操作。850 GHz的最高频率是陀螺管高频工作的新世界纪录.亚毫米波回旋管的振幅调制和频率调制这两种调制方式对回旋管作为辐射源的广泛应用具有重要意义。我们的亚毫米波回旋管在1 kHz至600 kHz的频率范围内实现了正弦波和方波调制。回旋管还实现了在257 GHz和260 GHz之间（在两个基本模式之间切换）以及在223 GHz和444 GHz之间（在基本模式和第二模式之间切换）的频率步进切换。这是第一次回旋管频率开关的实验，我们将回旋管应用于亚毫米波光谱学，并在以下几个方面进行了研究.基模和谐波模操作之间的模式竞争和合作，4。准光学器件在亚毫米波回旋管中的应用，5。等离子体散射测量使用回旋管作为电源，6。用回旋管作电源的毫米波ESR实验。