Technical note on the linearity and power dependence of the diffusion coefficient in W7-AS

M. van Berkel; H.J. Zwart; G.M.D. Hogeweij; M.R. de Baar

doi:10.1088/1361-6587/aa6a2b

Technical note on the linearity and power dependence of the diffusion coefficient in W7-AS

M. van Berkel, H.J. Zwart, G.M.D. Hogeweij, M.R. de Baar

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Abstract

Transient electron temperature measurements of a step power experiment at W7-AS are reassessed by direct comparison of the up- and downward responses of the electron temperature. The analysis shows that the response at some distance to the center behaves linearly and the model predicted responses based on a power-dependent diffusion coefficient that vary from the measured step responses.

Original language	English
Article number	062001
Pages (from-to)	1-4
Journal	Plasma Physics and Controlled Fusion
Volume	59
Issue number	6
DOIs	https://doi.org/10.1088/1361-6587/aa6a2b
Publication status	Published - 3 May 2017

Keywords

electron heat transport
perturbative experiments
power dependence
stellarator
step response
W7-AS

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10.1088/1361-6587/aa6a2b

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abstract = "Transient electron temperature measurements of a step power experiment at W7-AS are reassessed by direct comparison of the up- and downward responses of the electron temperature. The analysis shows that the response at some distance to the center behaves linearly and the model predicted responses based on a power-dependent diffusion coefficient that vary from the measured step responses.",

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Technical note on the linearity and power dependence of the diffusion coefficient in W7-AS

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Keywords

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