Development of submillimeter wave gyrotrons and their application to submillimeter wave spectroscopy

亚毫米波回旋管的研制及其在亚毫米波光谱中的应用

• 批准号: 06045015
• 负责人: IDEHARA Toshitaka
• 金额: $ 3.71万
• 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: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-06045015/
• 关键词: Gyrotron; Submillimeter wave; Terahertz; Plasma scattering measurement; ESR; Millimeter wave; Superconducting magnet; Drift wave; サブミリ波帯; ジョセフソン素子; テラヘルツ光源; 振幅変調; 周波数切り替え; 長パルス動作

In this project, we have developed frequency-tunable, medium power, submillimeter wave gyrotrons an applied them to submillimeter wave spectroscopy. In the process, the collaboration between Fukui University and University of Sydney playd an important and fundamental roles.1) Ultra-high frequency operation of gyrotron by the second and the third harmonics Using 12T and 17T superconducting magnets, we developed high frequency gyrotrons whose frequencies are close to 1 Terahertz. We have achieved the highest frequency of 847 GHz. This frequency is the world record of high frequency operation of gyrotron.2) cw operation of gyrotronWe have realized complete cw operation of the gyrotron and succeeded to achieve stabilities of amplitude and frequency of the gyrotron output, in order to apply the gyrotron to submillimeter wave spectroscopy as radiation source.3) Amplitude and frequency modulations of the submillimeter wave gyrotron outputWe have achived amplitude and frequency modulations of the gyrotron output for its application to wider fields.4) Studies on mode competition and mode cooperation between the fundamental and the second harmonic operations5) Development of quasi-optical transmission system for submillimeter wave gyrotrons outputs6) Development of a high sensitive detector in a millimeter wave range using a high T_c superconductor7) Plasma scattering measurement using a submillimeter wave gyrotron as a radiation sourceWe have applied the submillimeter wave scattering measurement system using our gyrotron (GYROTRON FU II) as a radiation source for CHS in National Institute for Fusion Science and succeeded in measurement of drift wave excited spontaneously in the device.8) Study on the millimeterr wave ESR using a gyrotron as a radiation source

在这个项目中，我们开发了频率可调的、中等功率的亚毫米波回旋管，并将它们应用于亚毫米波光谱。在这一过程中，福井大学和悉尼大学的合作发挥了重要的基础性作用。1)利用12T和17T超导磁体，利用二次和三次谐波超高频工作回旋管，我们研制出频率接近1太赫兹的高频回旋管。我们已经达到了最高频率847 GHz。这个频率是回旋管高频运行的世界纪录。2)回旋管的连续运行我们实现了回旋管的完全连续运行，并成功地实现了回旋管输出的幅度和频率的稳定，为了将回旋管应用到亚毫米波光谱中作为辐射源。3)亚毫米波回旋管输出的幅度和频率调制我们实现了回旋管输出的幅度和频率调制，使其应用于更广泛的领域。4)基波和二次谐波之间的模式竞争和模式合作的研究5)亚毫米波回旋管输出的准光学传输系统的研制6)利用高T_c超导体研制毫米波高灵敏度探测器7)以亚毫米波回旋管为辐射源测量等离子体散射8)以回旋管为辐射源的毫米波ESR的研究

项目成果

T.Tatsukawa and T.Idehara: "ESR Stectrometer with a Wide Frequency Range Using a Gyrotron as a Radiation Power Source" Int.J.Infrared and Millimeter Waves. 16. 293-305 (1995)

T.Tatsukawa 和 T.Idehara：“使用回旋管作为辐射电源的宽频率范围 ESR Stectrometer”Int.J.红外和毫米波。

G.F.Brand,他1名: "Millimeter-wave measurements of phase transitions in thiourea using a gyrotron" Appl.Phys.Lett.68. 2899-2901 (1996)

G.F.Brand 等人：“使用回旋管对硫脲中的相变进行毫米波测量”Appl.Phys.Lett.68 (1996)。

T.Idehara, et al.: "Development of a medium power, submillimeter wave gyrotron using a 17 T superconducting magnet" Phys.Plasmas. 2. 3246-3248 (1995)

T.Idehara 等人：“使用 17 T 超导磁体开发中等功率、亚毫米波回旋管”Phys.Plasmas。

I. Ogawa,他4名: "A quasi-optical transmission line for plasma scattering measurements using a submillimeter wave gyrotron" Int. J. Electronics.(in press). (1997)

I. Okawa 和其他 4 人：“使用亚毫米波回旋管进行等离子体散射测量的准光传输线”Int. Electronics（出版中）。

Y.Shimizu: "Development of a submillimeter wave gyrotron using a 12 T superconducting magnet" Phys.Plasmas. 2. 2110-2116 (1995)

Y.Shimizu：“使用 12 T 超导磁体开发亚毫米波回旋管”Phys.Plasmas。