Measurement of thermal transport by synchronous detection of modulated electron cyclotron heating in the Doublet III tokamak
- 1 February 1986
- journal article
- letter
- Published by IOP Publishing in Nuclear Fusion
- Vol. 26 (2), 226-231
- https://doi.org/10.1088/0029-5515/26/2/011
Abstract
The power from 60 GHz gyrotrons was squarewave modulated to produce periodic temperature perturbations in a Doublet III discharge. The modulated component of the resulting soft-X-ray signals was isolated by digital processing and synchronous detection using the modulation as reference. The phase shift of the signals as a function of radius agrees well with a model calculation based on the heat balance equation, allowing thermal diffusivity to be determined and demonstrating the efficacy of this technique.Keywords
This publication has 5 references indexed in Scilit:
- Giant sawtooth oscillations in the Doublet III tokamakNuclear Fusion, 1985
- Measurement of χein ISX-B beam-heated discharges by heat pulse propagationNuclear Fusion, 1984
- Internal disruptions in tokamaksNuclear Fusion, 1978
- Experimental Measurement of Electron Heat Diffusivity in a TokamakPhysical Review Letters, 1977
- Determination of the Electron Thermal Conductivity across Magnetic Surfaces in the FM-1 SpheratorPhysical Review Letters, 1974