Two-Fluid Nonlinear Theory of Response of Tokamak Plasma to Resonant Magnetic Perturbation

TL;DR

This paper develops a detailed two-fluid nonlinear model to understand how resonant magnetic perturbations influence plasma behavior at rational surfaces in tokamaks, crucial for controlling edge localized modes.

Contribution

It introduces a novel two-fluid nonlinear framework for analyzing magnetic reconnection driven by RMPs at rational surfaces in tokamak plasmas.

Findings

Provides a comprehensive nonlinear theory of plasma response to RMPs.

Highlights the role of two-fluid effects in magnetic reconnection.

Offers insights into ELM suppression mechanisms.

Abstract

A comprehensive two-fluid nonlinear theory of magnetic reconnection driven at a single, tearing-stable, rational surface embedded in an H-mode tokamak plasma is presented. The surface is assumed to be resonant with one of the dominant helical harmonics of an applied resonant magnetic perturbation (RMP). The theory described in this paper is highly relevant to the problem of understanding the physics of RMP-induced edge localized mode (ELM) suppression in tokamak plasmas.