Diagnostics System of JT-60U

Journal Article · Sun Sep 15 04:00:00 EDT 2002 · Fusion Science and Technology

OSTI ID:20845866

Sugie, T; Hatae, T; Koide, Y; Fujita, T; Kusama, Y; Nishitani, T; Isayama, A; Sato, M; Shinohara, K; Asakura, N; Konoshima, S; Kubo, H; Takenaga, H; Kawano, Y; Kondoh, T; Nagashima, A; Fukuda, T; Sunaoshi, H; Naito, O; Kitamura, S ; Tsukahara, Y; Sakasai, A; Sakamoto, Y; Suzuki, T; Tobita, K; Nemoto, M; Morioka, A; Ishikawa, M; Ishida, S; Isei, N; Oyama, N; Neyatani, Y; Itami, K; Sakurai, S; Tamai, H; Tsuchiya, K; Higashijima, S; Nakano, T; Nagaya, S; Chiba, S; Lee, S; Shitomi, M ^[1]

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1. Japan Atomic Energy Research Institute (Japan)

The diagnostic system of JT-60U (JT-60upgrade) is composed of about 50 individual diagnostic devices. Recently, the detailed radial profile measurements of plasma parameters have been improved, so that the internal structure of plasmas could be explored. The understanding of plasma confinement has been enhanced by density and temperature fluctuation measurements using a mm-wave reflectometer and electron cyclotron emission measurements, respectively. In addition, real-time control experiments of electron density, neutron yield, radiated power, and electron temperature gradient have been carried out successfully by corresponding diagnostic devices. These measurements and the real-time control contribute to improving plasma performance. Diagnostic devices for next generation fusion devices such as a CO{sub 2} laser interferometer/polarimeter and a CO{sub 2} laser collective Thomson scattering system have been developed.

• OSTI ID: 20845866
• Journal Information: Fusion Science and Technology, Journal Name: Fusion Science and Technology Journal Issue: 2,3 Vol. 42; ISSN 1536-1055
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CARBON DIOXIDE LASERS
CONTROL
ELECTRON DENSITY
ELECTRON TEMPERATURE
ELECTRONS
FLUCTUATIONS
JT-60U TOKAMAK
NEUTRONS
NUCLEAR REACTION YIELD
PERFORMANCE
PLASMA
PLASMA CONFINEMENT
POLARIMETERS
TEMPERATURE GRADIENTS
THOMSON SCATTERING