Nondimensional Transport Study of JT-60U Plasmas

Hiroshi Shirai; Tomonori Takizuka; Osamu Naito; Masayasu Sato; Nobuaki Isei; Yoshihiko Koide; Toshio Hirayama; Masafumi Azumi

doi:10.1143/jpsj.64.4209

Hiroshi Shirai, Tomonori Takizuka, Osamu Naito, Masayasu Sato, Nobuaki Isei, Yoshihiko Koide, Toshio Hirayama, Masafumi Azumi

Author information

Hiroshi Shirai
Department of Fusion Plasma Research, Naka Fusion Research Establishment, Japan Atomic Energy Research Institute, Naka–machi, Naka–gun, Ibaraki–ken, 311–01
Tomonori Takizuka
Department of Fusion Plasma Research, Naka Fusion Research Establishment, Japan Atomic Energy Research Institute, Naka–machi, Naka–gun, Ibaraki–ken, 311–01
Osamu Naito
Department of Fusion Plasma Research, Naka Fusion Research Establishment, Japan Atomic Energy Research Institute, Naka–machi, Naka–gun, Ibaraki–ken, 311–01
Masayasu Sato
Department of Fusion Plasma Research, Naka Fusion Research Establishment, Japan Atomic Energy Research Institute, Naka–machi, Naka–gun, Ibaraki–ken, 311–01
Nobuaki Isei
Department of Fusion Plasma Research, Naka Fusion Research Establishment, Japan Atomic Energy Research Institute, Naka–machi, Naka–gun, Ibaraki–ken, 311–01
Yoshihiko Koide
Department of Fusion Plasma Research, Naka Fusion Research Establishment, Japan Atomic Energy Research Institute, Naka–machi, Naka–gun, Ibaraki–ken, 311–01
Toshio Hirayama
Department of Fusion Plasma Research, Naka Fusion Research Establishment, Japan Atomic Energy Research Institute, Naka–machi, Naka–gun, Ibaraki–ken, 311–01
Masafumi Azumi
Department of Fusion Plasma Research, Naka Fusion Research Establishment, Japan Atomic Energy Research Institute, Naka–machi, Naka–gun, Ibaraki–ken, 311–01

Keywords: nondimensional transport, JT-60U, plasma, L-mode, thermal diffusivity, Bohm type diffusion, weak gyroBohm type diffusion, gyroBohm typediffusion

JOURNAL RESTRICTED ACCESS

1995 Volume 64 Issue 11 Pages 4209-4220

DOI https://doi.org/10.1143/jpsj.64.4209

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Abstract

Nondimensional local transport analysis of JT-60U plasmashas been carried out for NBI heated L-mode phase. Plasmas with thesame poloidal cross section and almost the same profiles ofnondimensional parameters such as ν ^*, β _th, q, T_e/T_i except for ρ ^* are compared. The ρ ^*dependence of the one fluid thermal diffusivity, χ _eff, theelectron thermal diffusivity, χ _e, and the ion thermaldiffusivity, χ _i, has been examined. The property of χ_effis between the weak gyroBohm type diffusion and the Bohm typediffusion in the region a/3≤ r≤ 2a/3, which is consistent with theresults of the global confinement study done before. We have alsofound that χ _e is weak gyroBohm type diffusion while χ_itends to be Bohm like diffusion.

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