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Set of wires to simulate tokamaks with poloidal divertor

Published online by Cambridge University Press:  12 April 2013

T. KROETZ ,
CAROLINE G. L. MARTINS ,
M. ROBERTO  and
I. L. CALDAS
T. KROETZ
Affiliation:
Universidade Tecnológica Federal do Paraná, Pato Branco, Paraná, 85503-390, Brazil
CAROLINE G. L. MARTINS
Affiliation:
Departamento de Física, Instituto Tecnológico de Aeronáutica, São José dos Campos, São Paulo, 12228-900, Brazil ([email protected])
M. ROBERTO
Affiliation:
Departamento de Física, Instituto Tecnológico de Aeronáutica, São José dos Campos, São Paulo, 12228-900, Brazil ([email protected])
I. L. CALDAS
Affiliation:
Instituto de Física, Universidade de São Paulo, 05315-970, São Paulo, Brazil
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Abstract

Simple wire models have been proposed to simulate magnetic configurations in tokamaks. Here we consider electric currents in five parallel infinite wires to obtain double-null magnetic surfaces with specific choices of magnetic axis positions, triangularity, and elongation. As an example, we choose the position and the electric current of each wire to obtain magnetic surfaces similar to those expected in the tokamak international thermonuclear experimental reactor. Moreover, we also integrate the perturbed field line differential equation to simulate chaotic layers near the hyperbolic points and deposition patterns at the divertor plate observed in tokamaks. To simulate that, we add to the model a perturbing error field, due to asymmetries in the tokamak coils, and introduce a random collisional term to the field line mapping to reproduce escape pattern alterations due to particle collisions.

Type
Papers
Information
Journal of Plasma Physics , Volume 79 , Issue 5 , October 2013 , pp. 751 - 757
Copyright
Copyright © Cambridge University Press 2013 

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