Effects of the resonant magnetic perturbation on turbulent transport

TL;DR

This paper investigates how resonant magnetic perturbations influence turbulent transport in plasma, using a semi-analytical test particle approach, with implications for experimental and ITER conditions.

Contribution

It provides a semi-analytical analysis of RMP effects on turbulent transport across a wide range of amplitudes, including predictions for ITER.

Findings

RMPs cause a strong increase in turbulent transport in the nonlinear regime.

Results agree with experiments at small RMP amplitudes.

Predictions for ITER vary depending on the turbulent transport model.

Abstract

The effects of the resonant magnetic perturbations (RMPs) on the turbulent transport are analyzed in the framework of the test particle approach using a semi-analytical method. The normalized RMP amplitude $P_{b}$ extends on a large range, from the present experiments to ITER conditions. The results are in agreement with the experiments at small $P_{b}.$ The predictions for ITER strongly depend on the type of turbulent transport. A very strong increase of the turbulent transport is obtained in the nonlinear regime, while the effects of the RMPs are much weaker for the quasilinear transport.