Spatial Profile Measurement Method of Absolute Detection Efficiency of an Infrared Heterodyne Receiver for the CO_2 Laser Collective Thomson Scattering System in JT-60U
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概要
- 論文の詳細を見る
A collective Thomson scattering (CTS) system based on CO_2 laser is being developed in JT-60U to demonstrate the feasibility of ion temperature and alpha particle measurement in international thermonuclear experimental reactor (ITER). A new effective method of measuring the spatial profile of absolute detection efficiency of an infrared heterodyne receiver has been developed for the CTS system. The viewing area and divergence of the field of view were first investigated with this method. Consequently, the spot size of the field of view could be narrowed to 0.74 mrad by adjusting the focal length of the local oscillator. The effective sample volume length determined by the injection beam waist and divergence of the field of view was also investigated.
- 社団法人応用物理学会の論文
- 2002-11-15
著者
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Kondoh Takashi
Naka Fusion Research Establishment
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Lee Seishu
Naka Fusion Research Establishment
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Miura Yukitoshi
Naka Fusion Research Establishment
関連論文
- Excitation, Impact and Control of Toroidicity-Induced Alfven Eigenmodes in the JT-60U ICRF Experiments
- Spatial Profile Measurement Method of Absolute Detection Efficiency of an Infrared Heterodyne Receiver for the CO_2 Laser Collective Thomson Scattering System in JT-60U
- Development of Fast Charge Exchange Recombination Spectroscopy by Using Interference Filter Method in JT-60U
- Development of a Decision Method for Optimum Ferromagnetic Board Arrangements to Reduce Toroidal Magnetic Field Ripple