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Title:
Tokoloshe - The South African Tokamak
Authors:
de Villiers, J. A. M.; Hayzen, A. J.; Omahony, J. R.; Roberts, D. E.; Sherwell, D.
Affiliation:
AA(South African Atomic Energy Board, Plasma Physics Div., Pretoria, Republic of South Africa), AB(South African Atomic Energy Board, Plasma Physics Div., Pretoria, Republic of South Africa), AC(South African Atomic Energy Board, Plasma Physics Div., Pretoria, Republic of South Africa), AD(South African Atomic Energy Board, Plasma Physics Div., Pretoria, Republic of South Africa), AE(South African Atomic Energy Board, Plasma Physics Div., Pretoria, Republic of South Africa)
Publication:
South African Journal of Science, vol. 75, Apr. 1979, p. 155-157.
Publication Date:
04/1979
Category:
Plasma Physics
Origin:
STI
NASA/STI Keywords:
Design Analysis, Plasma Diagnostics, Prediction Analysis Techniques, Tokamak Devices, Magnetic Field Configurations, Neutral Gases, Republic Of South Africa, Thomson Scattering, X Ray Spectroscopy
Bibliographic Code:
1979SAJSc..75..155D

Abstract

The design features and predicted parameters of Tokoloshe, a tokamak under development by the South African Atomic Energy Board, are presented. Special attention is given to the advantages offered by the low aspect ratio (R = 2) of the system, including the possibility of attaining plasma pressures up to about the aspect ratio and increasing the number of trapped particles. The peak electron temperature is expected to lie in the range of 300 to 600 eV in the center of discharge, depending on the scaling law. Ion temperatures of about 350 eV are predicted at the high-current limit. Gas puffing will be used to enhance particle densities during discharge. Operating particle densities are expected to be in the range 1 to 5 x 10 to the 13/cu cm. A brief summary is presented of planned diagnostic systems, including a Thomson scattering system, a laser interferometry system, Si(Li)-detector for soft X-rays, electrostatic analyzer system, visible spectroscopy system, and magnetic pickup coils.
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