Application of Neural Ordinary Differential Equations for Tokamak Plasma Dynamics Analysis
Keywords: Neural ODEs, Tokamak Plasma Dynamics, Controlled Thermonuclear Fusion, Deep Learning, Plasma Physics
TL;DR: This paper introduces a novel Neural ODE-based model for simulating tokamak plasma dynamics, offering precise energy transfer analysis crucial for advancing controlled thermonuclear fusion.
Abstract: In the quest for controlled thermonuclear fusion, tokamaks present complex challenges in understanding burning plasma dynamics. This study introduces a multi-region multi-timescale transport model, employing Neural Ordinary Differential Equations (Neural ODEs) to simulate the intricate energy transfer processes within tokamaks. Our methodology leverages Neural ODEs for the numerical derivation of diffusivity parameters from DIII-D tokamak experimental data, enabling the precise modeling of energy interactions between electrons and ions across various regions, including the core, edge, and scrape-off layer. These regions are conceptualized as distinct nodes, capturing the critical timescales of radiation and transport processes essential for efficient tokamak operation. Validation against DIII-D plasmas under various auxiliary heating conditions demonstrates the model's effectiveness, ultimately shedding light on ways to enhance tokamak performance with deep learning.
Submission Number: 48
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