Development of Medium Power, High Quality, Submillimeter Wave Gyrotron and Its Application to Plasma Measurement

中功率、高质量亚毫米波回旋管的研制及其在等离子体测量中的应用

基本信息

批准号：
03045023
负责人：
IDEHARA Toshitaka
金额：
$ 3.2万
依托单位：
Fukui University
依托单位国家：
日本
项目类别：
Grant-in-Aid for international Scientific Research
财政年份：
1991
资助国家：
日本
起止时间：
1991 至 1993
项目状态：
已结题

项目摘要

Objectives of the project are as follows, 1. Development of medium power, high quality, submillimeter wave gyrotron, and 2. Its application to plasma scattering measurement as a submillimeter wave source.Main results obtained through the term (1991-1993) are as follows,1. Development of high frequency gyrotron using the second and the third harmonic operationsHigh frequency, submillimeter wave gyrotrons are developed in both universities using 12 T superconducting magnets. In Fukui, a frequency tunable gyrotron (GYROTRON FU III) up to 636 GHz is realized by the fundamental, the second and the third harmonics of electron cyclotron resonance. Output powers are several hundred watts. In Sydney, a frequency tunability from 150 GHz to 615 GHz is attained by introducing the second harmonic operation developed in Fukui.The gyrotron has a important advantage of continuous operation, while output power is low, that is, several milliwatt to several ten watts.2. Long pulse operation of a submilli … More meter wave gyrotronGyrotrons in Fukui are pulsed. Long pulse operation is necessary for its application to plasma scattering measurement. Using GYROTRON FU II, 0.6 msec, TE_<161> mode operation at the second harmonic (frequency is 352 GHz) has been achieved. The output power is 150 W, which is applicable to plasma measurement as a power source.3. Amplitude modulation and frequency modulation of a submillimeter wave gyrotronBoth modulations of a gyrotron are important for its application to wider fields. Such modulations have been achieved by modulating anode voltage and cathode voltage of electron gun, respectively.4. Mode competition and cooperation between the fundamental and the second harmonic operationsSingle mode operations at the second harmonic which are necessary for development of high frequency gyrotron have been achieved by suppressing mode competition with the fundamental operations. On the other hand, under some operation condition, the second harmonic operation triggers a fundamental operation (a kind of mode cooperation). As the results, a starting current of the fundamental decreases and total energy extracted from the electron beam increases.5. Plasma scattering measurement using a gyrotron as a power sourceUsing GYROTRON FU II as a submillimeter wave source, a scattering measurement of a drift wave in CHS device is successfully done under collaboration with National Institute of Fusion Science. In Sydney, a scattering measurement of Alfven wave in TORTUS Tokamak is also done in the plasma heating experiment. Less

该项目的目标如下，1。中等力量，高质量，亚毫升波浪和2的发展。将其应用于等离子体散射测量作为亚毫米波源。通过术语（1991-1993）获得的梅恩结果如下，如下所示，1。使用第二和第三个谐波操作高频率的高频循环发育，在两所大学中使用12 t超导磁体开发了亚毫升波循环。在福克（Fukui）中，频率可调节的旋转（Gyrotron Fu iii）最高636 GHz是由电子回谐共振的基本，第二和第三个谐波实现的。输出功率为几百瓦。在悉尼，通过引入福岛开发的第二次谐波操作来连接从150 GHz到615 GHz的频率可鼠能力。Gyrotron具有连续运行的显着优势，而输出功率却很低，即几毫瓦到几毫米到几个10瓦。2。亚亚略的长脉冲操作…福克伊中更多的仪表波浪旋转的脉冲是脉冲的。将其应用于血浆散射测量是必要的。使用Gyrotron Fu II，0.6毫秒，TE_ <161>在第二个谐波（频率为352 GHz）处的模式操作。输出功率为150 W，适用于等离子测量作为电源3。陀螺仪的亚毫米波旋转调制的振幅调制和频率调制对于应用于宽场的应用至关重要。通过分别调制电子枪的阳极电压和阴极电压来实现此类调节。4。通过抑制与基本操作的模式竞争，可以实现基本操作和第二次谐波操作的基本和第二次谐波操作单模式操作之间的模式竞争与合作。另一方面，在某些操作条件下，第二次谐波操作触发了基本操作（一种模式协调）。由于结果，基本降低的起始电流和从电子束提取的总能量增加。5。在与国家融合科学研究所合作的情况下成功完成了使用Gyrotron作为陀螺仪的电力源fu II作为亚毫米波源的电源散射测量的等离子体散射测量。在悉尼，在等离子体加热实验中，还完成了tortus tokamak中阿尔文波的散射测量。较少的