Measurements of NBI and ion cyclotron range of frequency power deposition profiles using charge exchange spectroscopy

Journal Article · Mon Aug 01 04:00:00 EDT 1988 · Rev. Sci. Instrum.; (United States)

DOI:https://doi.org/10.1063/1.1140177· OSTI ID:6950183

Ozaki, T; Kadota, K; Ogawa, Y; Fujita, J

Power deposition profiles of a heating neutral beam and/or an ion cyclotron range of frequency (ICRF) heating have been measured on the JIPP T-IIU tokamak. The deposition is obtained from the rise time of the ion temperature, which is measured from the Doppler broadening of C VI emission produced by charge exchange reaction between a neutral beam and a carbon impurity. The power deposition of ICRF has been found to be flatter than that of neutral beam injection (NBI). The thermal diffusivities are 4--5 times larger than the neoclassical values both in NBI and NBI+ICRF cases.

• Research Organization: Institute of Plasma Physics, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-01, Japan
• OSTI ID: 6950183
• Journal Information: Rev. Sci. Instrum.; (United States), Journal Name: Rev. Sci. Instrum.; (United States) Vol. 59:8; ISSN RSINA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700102* -- Fusion Energy-- Plasma Research-- Diagnostics
700205 -- Fusion Power Plant Technology-- Fuel
Heating
& Injection Systems
BEAM INJECTION
BEAM INJECTION HEATING
CARBON IONS
CHARGED PARTICLES
CLOSED PLASMA DEVICES
DATA ACQUISITION SYSTEMS
HEATING
HIGH-FREQUENCY HEATING
ICR HEATING
ION TEMPERATURE
IONS
JIPPT-2 DEVICE
MEASURING INSTRUMENTS
NEUTRAL ATOM BEAM INJECTION
OPTICAL SPECTROMETERS
PLASMA DIAGNOSTICS
PLASMA HEATING
SPECTROMETERS
STELLARATORS
THERMONUCLEAR DEVICES
TOKAMAK DEVICES