EP-Stability-WF: an IMAS-integrated workflow for energetic particle stability

TL;DR

This paper introduces an automated, IMAS-integrated workflow for analyzing the linear stability of energetic particle-driven modes, specifically Toroidal Alfven Eigenmodes, in Tokamak geometries to aid fusion reactor performance optimization.

Contribution

It presents a novel automated workflow that combines efficient computational methods and reduced models for analyzing EP stability in fusion devices.

Findings

Successfully identified key TAE properties in ITER scenarios

Demonstrated fast and reproducible stability analysis

Enabled better understanding of EP transport mechanisms

Abstract

The confinement of energetic particles (EPs) generated by fusion reactions and external heating methods is crucial for the performance of future fusion devices. However, EP transport can occur due to their interaction with electromagnetic perturbations, affecting heating efficiency and overall performance. Robust reduced models are needed to analyze stability and transport, but their development requires effort. This paper presents an automated IMAS-based workflow for analyzing the time-dependent stability of EP-driven modes, focusing on the linear properties of Toroidal Alfven Eigenmodes (TAEs) in general Tokamak geometry. The workflow utilizes efficient computational methods and reduced models to deliver fast and reproducible results. A demonstration of the workflow's effectiveness was performed, identifying key linear properties of TAEs in various projected ITER scenarios. This approach represents a critical step towards developing tools for analyzing EP transport and optimizing the performance of future fusion reactors.