A compact stellarator-tokamak hybrid

TL;DR

This paper introduces a novel optimized stellarator-tokamak hybrid design that combines the advantages of both devices, resulting in a compact, stable, and efficient magnetic confinement system for fusion energy.

Contribution

It presents the first optimized stellarator-tokamak hybrid with a simplified coil set that enhances stability and maintains compactness, merging strengths of both devices.

Findings

Achieves a compact magnetic confinement configuration.

Provides enhanced rotational transform for stability.

Simplifies coil design compared to traditional systems.

Abstract

Tokamaks and stellarators are the leading two magnetic confinement devices for producing fusion energy, begging the question of whether the strengths of the two could be merged into a single concept. To meet this challenge, we propose a first-of-its kind optimized stellarator-tokamak hybrid. Compared to a typical tokamak coil set, only a single simple type of stellarator coil has to be added which leads to a compact, volume- and transport-preserving magnetic field, with an added rotational transform that reaches levels thought to enhance stability.