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

Journal Article · Sun Jul 01 00:00:00 EDT 1984 · Fusion Technol.; (United States)

OSTI ID:5510394

Strickler, D J; Holmes, J A; Martin Peng, Y K; Miller, J B; Rothe, K E

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 radius 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 0/=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.

• Research Organization: Oak Ridge Nat. Lab., Fusion Eng. Dept., Oak Ridge, TN
• OSTI ID: 5510394
• Journal Information: Fusion Technol.; (United States), Vol. 6:1
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ELECTRIC CURRENTS
PLASMA SIMULATION
QUENCHING
PLASMA DISRUPTION
ELECTROMAGNETIC INTERACTIONS
ENERGY BALANCE
ENERGY LOSSES
LIMITERS
MATHEMATICAL MODELS
BASIC INTERACTIONS
CURRENTS
INTERACTIONS
LOSSES
SIMULATION
700105* - Fusion Energy- Plasma Research- Plasma Kinetics-Theoretical- (-1987)