Development of frequency tunable gyrotrons as high power far-infrared wave sources and their applications to far-infrared spectroscopy

高功率远红外波源频率可调陀螺仪的研制及其在远红外光谱中的应用

• 批准号: 12558045
• 负责人: IDEHARA Toshitaka
• 金额: $ 8.38万
• 依托单位: Fukui University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-12558045/
• 关键词: Gyrotron; Submillimeter wave; Far-infrared range; High harmonic; Plasma scattering measurement; Submillimeter wave ESR; Permanent magnet; Frequency tunable; 高調波動作; 振幅変調; 周波数変調; 高安定化

(1) Development of submillimeter wave gyrotrons using a 17 T superconducting msgnet, whose wavelength is tunable down to 337 μm(2) Development of higher harmonic gyrotron with a 1 T permanent magnet. The 3 rd, the 4 th and the 5 th harmonic operations were realized successfully.(3) Frequency modulation of gyrotron output was achieved by modulation of beam electron energy, while amplitude modulation by modulation of velocity distribution function of beam electrons.(4) Frequency stabilization of gyrotron output was achieved by phase-lock control of beam electron energy, while amplitude stabilization by feed-back control of anode voltage of gun. The stabilities of frequency and amplitude were 3・10^<-10> and 10^<-3>, respectively.(5) Conversion of gyrotron output to Gaussian mode by a quasi-optical system and achievement of high efficiency transmission of the bi-Gaussian mode.(6) A plasma scattering measurement system with a gyrotron as a radiation source in a submillimeter wavelength range was designed and constructed. Its application to measurement of density fluctuation for CHS and LHD in National Institute for Fusion Science and a tokamak device NSTX in Princeton University was researched.(7) A high power ESR device with a gyrotron as a radiation source was constructed and already applied to ESR study in submillimeter wavelength range.

(1)研制波长可调到337μm的17T超导磁控管；(2)研制1T永磁体高次谐波回旋管。(3)通过束流电子能量调制实现回旋管输出的调频，通过束流电子速度分布函数的调制实现幅度调制，通过束流电子能量的锁相控制实现回旋管输出的稳频，通过炮阳极电压的反馈控制实现回旋管输出的稳幅。频率稳定度和幅度稳定度分别为3.10；-10和10；-3。(5)利用准光学系统将回旋管输出转换为高斯模，实现了双高斯模的高效传输。(6)设计并搭建了一套以回旋管为辐射源的亚毫米波段等离子体散射测量系统。研究了它在美国国家核聚变科学研究所CHS和LHD密度涨落测量中的应用，以及普林斯顿大学的托卡马克装置NSTX。(7)搭建了一台以回旋管为辐射源的高功率ESR装置，并将其应用于亚毫米波段的ESR研究。

项目成果

I.Ogawa 他: "Design of a quasi-optical mode conversion system with variable output beam size"Int. J. of Electronics. 87,4. 457-467 (2000)

I. Okawa 等人：“具有可变输出光束尺寸的准光学模式转换系统的设计”，Int. of Electronics 87,4 (2000)。

T.Hori 他: "Magnetic properties of hp13 type TFe_6Ge_6(T=Zr, Nb, Hf)alloys"Journal of Magnetism and Magnetic Materials. 226-230. 1076-1078 (2001)

T.Hori 等人：“hp13 型 TFe_6Ge_6(T=Zr、Nb、Hf) 合金的磁性”《磁性与磁性材料杂志》226-230 (2001)。

M.Glyavin 他: "Development of a compact gyrotron system for microwave processing of materials"J. Jpn. Soc. Infrared Sci. and Tech.. 12. 60-64 (2002)

M. Glyavin 等人：“用于材料微波处理的紧凑型回旋管系统的开发”J. Infrared Sci and Tech.. 12. 60-64 (2002)

T.Idehara 他: "Development and applications of submillimeter wave gyrotrons Fukui University"Proc. of 26 th Int. Conf. on Infrared and Millimeter Waves (held in Toulouse, France, Sep.10-14,2001). 5-9-5-13 (2003)

T. Idehara 等人：“福井大学亚毫米波回旋管的开发和应用”第 26 届红外和毫米波国际会议（2001 年 9 月 10 日至 14 日在法国图卢兹举行）。 9-5-13 (2003)

S.Mitsudo 他: "The use of a submillimeter wave gyrotron FU IVA in ESR spectrumeter"Proc. of 26 th Int. Conf. on Infrared and Millimeter Waves (held in Toulouse, France, Sep.10-14,2001). 5-168-5-170 (2003)

S. Mitsudo 等人：“亚毫米波回旋管 FU IVA 在 ESR 光谱仪中的使用”第 26 届红外和毫米波国际会议（2001 年 9 月 10 日至 14 日在法国图卢兹举行） 5-168-5-170 (2003)