1994 Fiscal Year Annual Research Report

ミリ波・サブミリ波帯二次元イメージングアレイによるプラズマ診断

Research Project

Project/Area Number	05558056
Research Institution	University of Tukuba
Principal Investigator	間瀬淳筑波大学, 物理工学系, 助教授 (00023325)
Co-Investigator(Kenkyū-buntansha)	原田八十雄三洋電機(株), マイクロエレクトロニクス研究所・超高速エレクトロニクス研究部, 部長水野晧司東北大学, 電気通信研究所, 教授 (30005326) 板倉昭慶筑波大学, 物理学系, 講師 (80015544)
Keywords	ミリ波 / サブミリ波 / 二次元検出器 / プラズマ診断 / 位相イメージング / ECEイメージング
Research Abstract	1.準光学素子を用いた周波数70GHz帯干渉光学系に4×4素子検出器を適用し、二次元イメージ測定システムを構成した。受信方式は二台の独立した発振器を持つヘテロダイン方式で、発振器の差周波数はPLL回路を用い安定化されている。またトラッキング方式を併用することにより、従来からの周波数455KHzの位相検波回路を使用することが可能となった。 2.本システムをガンマ10プラグ部プラズマに適用し、閉じ込め電位形成時のプラグ部密度分布の測定に成功した。干渉計としての空間分解はアンテナ開口と光学系の倍率で決定され、半径方向2.7cm、軸方向2.5cmである。これは誘電体ターゲットを用いた校正実験でも確認された。一方、測定の位相分解は1/(200)フリンジに達した。 3.二次元イメージ法システムをヘテロダイン受信機として電子サイクロトロン放射測定にも適用した。光学的に薄い正常波モードおよび異常波モード放射信号の比から、ECH印加時のプラグ部プラズマの高温電子および超高温電子成分の絶対値の二次元分布導出に成功した。また、二点での信号の相関測定から電子温度揺動の情報も得た。本実験はECEイメージングの初めての適用例となった。 4.ミリ波-サブミリ波の高周波領域への適用のため、アンテナ、ダイオードが一体となったモノリシック形検出器の設計に着手した。 5.本研究で製作した二次元検出器が、文部省核融合科学研究所のヘリカル装置CHSのECEイメージング測定にも適用されることになった。また、研究代表者が中心となり、プラズマ・核融合学会誌に「ミリ波・サブミリ波計測の基礎と応用」のテーマで平成7年1月号より講座を開始した。プラズマ計測のみならず地球環境観測、宇宙観測まで含めたもので、二次元イメージングの応用などが先端技術として記述される。

Research Products

(23 results)

All Other

All Publications (23 results)

[Publications] T.Tamano: "Overview of Experimental Results on the GAMMA 10" International Conference on Open Plasma Confinement Systems for Fusion(World Scientific). 1-22 (1994)
[Publications] M.Inutake: "Potential Profile Control and MHD Stability of GAMMA 10 ICRF-Heated Plasmas" International Conference on Open Plasma Confinement Systems for Fusion(World Scientific). 51-68 (1994)
[Publications] M.Ichimura: "Experimental Study of Alfven-Ion-Cyclotron Mode in the GAMMA 10 Tandem Mirror" International Conference on Open Plasma Confinement Systems for Fusion(World Scientific). 69-78 (1994)
[Publications] T.Tamano: "Energy and Particle Confinement in the GAMMA 10" International Conference on Open Plasma Confinement Systems for Fusion(World Scientific). 97-104 (1994)
[Publications] A.Mase: "Microinstabilities in the Central Cell Plasma of GAMMA 10" International Conference on Open Plasma Confinement Systems for Fusion(World Scientific). 211-220 (1994)
[Publications] N.Yamaguchi: "Impurity Studies on the GAMMA 10 Using Extreme Ultraviolet/Soft X-Ray Spectroscopy" International Conference on Open Plasma Confinement Systems for Fusion(World Scientific). 221-230 (1994)
[Publications] L.G.Bruskin: "Microwave Scattering near the Cut-Off Layer by Density and Magnetic Field Fluctuations" Plasma Physics and Controlled Fusion. 36. 681-693 (1994)
[Publications] T.Tokuzawa: "Low-Frequency Waves during GAMMA 10 End-Plate Biasing Using Microwave Reflectometry" Japanese Journal of Applied Physics. 33. L807-L809 (1994)
[Publications] L.Bruskin: "Microwave Scattering by 2D Plasma Density and Magnetic Field Fluctuations" Conference Digest of 19th Int.Conf.on Infrared and Millimeter-Waves. 305-306 (1994)
[Publications] T.Tokuzawa: "A Fast-Swept Microwave Reflectometer for Density Proflie Measurement on GAMMA 10" Conference Digest of 19th Int.Conf.on Infrared and Millimeter-Waves. 307-308 (1994)
[Publications] T.Nozokido: "Optimization of a Schottky Barrier Mixer Diode in the Submillimeter Wave Region" Int.J.of Infrared and Millimeter Waves. 15. 1851-1865 (1994)
[Publications] C.M.Mann: "Measurement and Study of the Embedding Impedance Presented by the Whisker Antenna of a Schottky Diode Corner Cube Mixer" Int.J.of Infrared and Millimeter Waves. 1867-1881 (1994)
[Publications] J.Bae: "Metal Mesh Couplers Using Optical Tunneling Effect at Millimeter and Submillimeter Wavelengths" 1994 MTT-S Int.Microwave Symp.Digest. 2. 787-790 (1994)
[Publications] N.Yamaguchi: "Space-Resolving Flat-Field Vacuum Ultraviolet Spectrograph for Plasma Diagnostics" Review of Scientific Instruments. 3408-3414 (1994)
[Publications] T.Tokuzawa: "Ultrafast Microwave Reflectometer for Density Profile Measurements on GAMMA 10" Japanese Journal of Applied Physics. 34. L76-L78 (1995)
[Publications] A.Mase: "Measurements of ICRF Waves in the GAMMA 10 Tandem Mirror Using Reflectometers" Review of Scientific Instruments. 66. 821-823 (1995)
[Publications] N.Oyama: "Millimeter-Wave Phase Imaging Interferometry Using Two-Dimensional Detector Array" Japanese Journal of Applied Physics. 34(印刷中). (1995)
[Publications] L.G.Bruskin: "Two-Dimensional Microwave Scattering by Fluctuations of Plasma Density and Mgnetic Field" Plasma Physics and Controlled Fusion. 37(印刷中). (1995)
[Publications] Y.Nakashima: "Studies of Fueling and Particle Transport in the GAMMA 10 Tandem Mirror" Journal of the Nuclear Materials. (発表予定). (1995)
[Publications] M.Ichimura: "Stability of ICRF-Heated Plasmas in the GAMMA 10 Tandem Mirror" Proc.5th Int.Toki Conf.on Plasma Physics and Controlled Nuclear Fusion,Fusion Engineering and Design. (発表予定). (1995)
[Publications] T.Tamano: "Recent Results of Tandem Mirror Experiments in GAMMA 10 and HIEI" Plasma Physics and Controlled Nuclear Fusion Research(IAEA,Vienna). (発表予定). (1995)
[Publications] M.Inutake: "MHD Stability of a Hot-Ion-Mode Plasma in the GAMMA 10 Tandem Mirror" Proc.6th Int.Toki Conf.on Plasma Physics and Controlled Nuclear Fusion,Fusion Engineering and Design. (発表予定). (1995)
[Publications] 三好昭一: "ミラー型核融合装置" アイピーシー, 326 (1995)

1994 Fiscal Year Annual Research Report

ミリ波・サブミリ波帯二次元イメージングアレイによるプラズマ診断

Principal Investigator

間瀬 淳 筑波大学, 物理工学系, 助教授 (00023325)

Research Products

[Publications] T.Tamano: "Overview of Experimental Results on the GAMMA 10" International Conference on Open Plasma Confinement Systems for Fusion(World Scientific). 1-22 (1994)

[Publications] M.Inutake: "Potential Profile Control and MHD Stability of GAMMA 10 ICRF-Heated Plasmas" International Conference on Open Plasma Confinement Systems for Fusion(World Scientific). 51-68 (1994)

[Publications] M.Ichimura: "Experimental Study of Alfven-Ion-Cyclotron Mode in the GAMMA 10 Tandem Mirror" International Conference on Open Plasma Confinement Systems for Fusion(World Scientific). 69-78 (1994)

[Publications] T.Tamano: "Energy and Particle Confinement in the GAMMA 10" International Conference on Open Plasma Confinement Systems for Fusion(World Scientific). 97-104 (1994)

[Publications] A.Mase: "Microinstabilities in the Central Cell Plasma of GAMMA 10" International Conference on Open Plasma Confinement Systems for Fusion(World Scientific). 211-220 (1994)

[Publications] N.Yamaguchi: "Impurity Studies on the GAMMA 10 Using Extreme Ultraviolet/Soft X-Ray Spectroscopy" International Conference on Open Plasma Confinement Systems for Fusion(World Scientific). 221-230 (1994)

[Publications] L.G.Bruskin: "Microwave Scattering near the Cut-Off Layer by Density and Magnetic Field Fluctuations" Plasma Physics and Controlled Fusion. 36. 681-693 (1994)

[Publications] T.Tokuzawa: "Low-Frequency Waves during GAMMA 10 End-Plate Biasing Using Microwave Reflectometry" Japanese Journal of Applied Physics. 33. L807-L809 (1994)

[Publications] L.Bruskin: "Microwave Scattering by 2D Plasma Density and Magnetic Field Fluctuations" Conference Digest of 19th Int.Conf.on Infrared and Millimeter-Waves. 305-306 (1994)

[Publications] T.Tokuzawa: "A Fast-Swept Microwave Reflectometer for Density Proflie Measurement on GAMMA 10" Conference Digest of 19th Int.Conf.on Infrared and Millimeter-Waves. 307-308 (1994)

[Publications] T.Nozokido: "Optimization of a Schottky Barrier Mixer Diode in the Submillimeter Wave Region" Int.J.of Infrared and Millimeter Waves. 15. 1851-1865 (1994)

[Publications] C.M.Mann: "Measurement and Study of the Embedding Impedance Presented by the Whisker Antenna of a Schottky Diode Corner Cube Mixer" Int.J.of Infrared and Millimeter Waves. 1867-1881 (1994)

[Publications] J.Bae: "Metal Mesh Couplers Using Optical Tunneling Effect at Millimeter and Submillimeter Wavelengths" 1994 MTT-S Int.Microwave Symp.Digest. 2. 787-790 (1994)

[Publications] N.Yamaguchi: "Space-Resolving Flat-Field Vacuum Ultraviolet Spectrograph for Plasma Diagnostics" Review of Scientific Instruments. 3408-3414 (1994)

[Publications] T.Tokuzawa: "Ultrafast Microwave Reflectometer for Density Profile Measurements on GAMMA 10" Japanese Journal of Applied Physics. 34. L76-L78 (1995)

[Publications] A.Mase: "Measurements of ICRF Waves in the GAMMA 10 Tandem Mirror Using Reflectometers" Review of Scientific Instruments. 66. 821-823 (1995)

[Publications] N.Oyama: "Millimeter-Wave Phase Imaging Interferometry Using Two-Dimensional Detector Array" Japanese Journal of Applied Physics. 34(印刷中). (1995)

[Publications] L.G.Bruskin: "Two-Dimensional Microwave Scattering by Fluctuations of Plasma Density and Mgnetic Field" Plasma Physics and Controlled Fusion. 37(印刷中). (1995)

[Publications] Y.Nakashima: "Studies of Fueling and Particle Transport in the GAMMA 10 Tandem Mirror" Journal of the Nuclear Materials. (発表予定). (1995)

[Publications] M.Ichimura: "Stability of ICRF-Heated Plasmas in the GAMMA 10 Tandem Mirror" Proc.5th Int.Toki Conf.on Plasma Physics and Controlled Nuclear Fusion,Fusion Engineering and Design. (発表予定). (1995)

[Publications] T.Tamano: "Recent Results of Tandem Mirror Experiments in GAMMA 10 and HIEI" Plasma Physics and Controlled Nuclear Fusion Research(IAEA,Vienna). (発表予定). (1995)

[Publications] M.Inutake: "MHD Stability of a Hot-Ion-Mode Plasma in the GAMMA 10 Tandem Mirror" Proc.6th Int.Toki Conf.on Plasma Physics and Controlled Nuclear Fusion,Fusion Engineering and Design. (発表予定). (1995)

[Publications] 三好昭一: "ミラー型核融合装置" アイピーシー, 326 (1995)

間瀬淳筑波大学, 物理工学系, 助教授 (00023325)