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Title: Numerical simulation of the plasma current quench following a disruptive energy loss

Abstract

The plasma electromagnetic interaction with poloidal field coils and nearby passive conductor loops during the current quench following a disruptive loss of plasma energy is simulated. By solving a differential/algebraic system consisting of a set of circuit equations (including the plasma circuit) coupled to a plasma energy balance equation and an equilibrium condition, the electromagnetic consequences of an abrupt thermal quench are observed. Limiters on the small and large major radium sides of the plasma are assumed to define the plasma cross section. The presence of good conductors near the plasma and a small initial distance (i.e., 5 to 10% of the plasma minor radius) between the plasma edge and an inboard limiter are shown to lead to long current decay times. For a plasma with an initial major radius R/sub o/ = 4.3 m, aspect ratio A = 3.6, and current I/sub P/ = 4.0 MA, introducing nearby passive conductors lengthens the current decay from milliseconds to hundreds of milliseconds.

Authors:
; ; ; ;
Publication Date:
Research Org.:
Oak Ridge National Lab., TN (USA)
OSTI Identifier:
5592051
Report Number(s):
ORNL/FEDC-83/2
ON: DE84003151
DOE Contract Number:  
W-7405-ENG-26
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; PLASMA DISRUPTION; MATHEMATICAL MODELS; QUENCHING; DIFFERENTIAL EQUATIONS; ENERGY BALANCE; MAGNET COILS; NUMERICAL SOLUTION; TOROIDAL CONFIGURATION; ANNULAR SPACE; CONFIGURATION; ELECTRIC COILS; ELECTRICAL EQUIPMENT; EQUATIONS; EQUIPMENT; SPACE; 700107* - Fusion Energy- Plasma Research- Instabilities

Citation Formats

Strickler, D J, Peng, Y K.M., Holmes, J A, Miller, J B, and Rothe, K E. Numerical simulation of the plasma current quench following a disruptive energy loss. United States: N. p., 1983. Web. doi:10.2172/5592051.
Strickler, D J, Peng, Y K.M., Holmes, J A, Miller, J B, & Rothe, K E. Numerical simulation of the plasma current quench following a disruptive energy loss. United States. https://doi.org/10.2172/5592051
Strickler, D J, Peng, Y K.M., Holmes, J A, Miller, J B, and Rothe, K E. Tue . "Numerical simulation of the plasma current quench following a disruptive energy loss". United States. https://doi.org/10.2172/5592051. https://www.osti.gov/servlets/purl/5592051.
@article{osti_5592051,
title = {Numerical simulation of the plasma current quench following a disruptive energy loss},
author = {Strickler, D J and Peng, Y K.M. and Holmes, J A and Miller, J B and Rothe, K E},
abstractNote = {The plasma electromagnetic interaction with poloidal field coils and nearby passive conductor loops during the current quench following a disruptive loss of plasma energy is simulated. By solving a differential/algebraic system consisting of a set of circuit equations (including the plasma circuit) coupled to a plasma energy balance equation and an equilibrium condition, the electromagnetic consequences of an abrupt thermal quench are observed. Limiters on the small and large major radium sides of the plasma are assumed to define the plasma cross section. The presence of good conductors near the plasma and a small initial distance (i.e., 5 to 10% of the plasma minor radius) between the plasma edge and an inboard limiter are shown to lead to long current decay times. For a plasma with an initial major radius R/sub o/ = 4.3 m, aspect ratio A = 3.6, and current I/sub P/ = 4.0 MA, introducing nearby passive conductors lengthens the current decay from milliseconds to hundreds of milliseconds.},
doi = {10.2172/5592051},
url = {https://www.osti.gov/biblio/5592051}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1983},
month = {11}
}