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Simple divertor model for transport analysis based on experimental data

Technical Report:

Abstract

A simple divertor code has been developed in order to analyze the divertor transport based on the experimental data. The fluid equations are solved numerically in one dimension along the magnetic field lines, neglecting the cross-field diffusion. In contrast to the conventional divertor code, the boundary conditions are given as the fixed plasma parameter at the divertor plate, which are measured by Langmuir probes. The neutral particle transport is treated in two dimensions including the MHD equilibrium and the real wall geometry by a Monte Carlo code. The interaction between the plasma and the neutral particles is solved self-consistently using the iterative procedure. The convergence is very fast compared with the predictive divertor codes because of the fixed plasma parameter at the divertor plate. Short computational time facilitates systematic analysis of divertor transport. Applying this model to the ohmic divertor plasmas in JT-60U initial experiments, the particle confinement time in the main plasma and the heat diffusivity in the scrape-off layer are evaluated. (author).
Authors:
Shimizu, Katsuhiro; Shimada, Michiya; Takizuka, Tomonori [1] 
  1. Japan Atomic Energy Research Inst., Naka, Ibaraki (Japan). Naka Fusion Research Establishment
Publication Date:
Oct 01, 1991
Product Type:
Technical Report
Report Number:
JAERI-M-91-161
Reference Number:
SCA: 700330; PA: JPN-91:012161; SN: 92000659195
Resource Relation:
Other Information: PBD: Oct 1991
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; JT-60U TOKAMAK; NEUTRAL-PARTICLE TRANSPORT; CHARGED-PARTICLE TRANSPORT; DIVERTORS; PLASMA SCRAPE-OFF LAYER; WALL EFFECTS; COMPUTER CALCULATIONS; MONTE CARLO METHOD; COMPUTER CODES; PLASMA IMPURITIES; MAGNETIC CONFINEMENT; ONE-DIMENSIONAL CALCULATIONS; 700330; PLASMA KINETICS, TRANSPORT, AND IMPURITIES
OSTI ID:
10117039
Research Organizations:
Japan Atomic Energy Research Inst., Tokyo (Japan)
Country of Origin:
Japan
Language:
English
Other Identifying Numbers:
Other: ON: DE92768083; TRN: JP9112161
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
JPN
Size:
29 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Shimizu, Katsuhiro, Shimada, Michiya, and Takizuka, Tomonori. Simple divertor model for transport analysis based on experimental data. Japan: N. p., 1991. Web.
Shimizu, Katsuhiro, Shimada, Michiya, & Takizuka, Tomonori. Simple divertor model for transport analysis based on experimental data. Japan.
Shimizu, Katsuhiro, Shimada, Michiya, and Takizuka, Tomonori. 1991. "Simple divertor model for transport analysis based on experimental data." Japan.
@misc{etde_10117039,
title = {Simple divertor model for transport analysis based on experimental data}
author = {Shimizu, Katsuhiro, Shimada, Michiya, and Takizuka, Tomonori}
abstractNote = {A simple divertor code has been developed in order to analyze the divertor transport based on the experimental data. The fluid equations are solved numerically in one dimension along the magnetic field lines, neglecting the cross-field diffusion. In contrast to the conventional divertor code, the boundary conditions are given as the fixed plasma parameter at the divertor plate, which are measured by Langmuir probes. The neutral particle transport is treated in two dimensions including the MHD equilibrium and the real wall geometry by a Monte Carlo code. The interaction between the plasma and the neutral particles is solved self-consistently using the iterative procedure. The convergence is very fast compared with the predictive divertor codes because of the fixed plasma parameter at the divertor plate. Short computational time facilitates systematic analysis of divertor transport. Applying this model to the ohmic divertor plasmas in JT-60U initial experiments, the particle confinement time in the main plasma and the heat diffusivity in the scrape-off layer are evaluated. (author).}
place = {Japan}
year = {1991}
month = {Oct}
}