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In this project we will examine the forces generated in superconductoring magnetics, and scope the forces generated during a disruption.
In this project, we apply multiple-region relaxed MHD model, designed to describe the fractal fix of chaotic field lines, magentic islands, and flux surfaces in toroidal magnetic confinement, to describe a solar flare.
In this project we would compare the construction of accretion disc and magnetic configuration Grad-Shafranov problems, and apply a recently developed toroidal magnetic confinement equilibrium code to model an accretion disc. A focus of the project will be constraining free functions to observational data.
A new model, multiple relaxed region MHD, has been developed to describe magnetic islands and chaotic fields in toroidal magentic cofinement. This project would extend that model to include toroidal flow.
In this project the wave-particle resonance condition will be computed for a range of precomputed particle orbits (and orbit populations), which initially were computed for transport studies. An estimate of wave-drive due to spatial gradients will be afforded using wave functions from an ideal MHD stability analysis and orbit population information, and compared to diagnostics.
The project is to relate the onset of tearing mode instability in MRXMHD to the multi-tearing Delta' formalism of Dewar and Pletzer (developed in an earlier ANU PhD project) and to use this to model recent experimental results in Reversed Field Pinches (RFPs), a class of toroidal fusion devices.
In this project the principles and design of a plasma wakefield accelerator will be reviewed, and the opportunities for a low-cost wakefield accelerator explored.
Recent development of a flowing MHD model for the rotating, collisional column of MAGPIE plasmas discovered the intriguing prediction of opposite axial acceleration of the plasma ions in the subsonic and supersonic regimes. This project would examine the regime above, below, and through the shock.
Key to sustaining fusion plasmas is that they are MHD stable to disruptive mode activity, and other electromagnetic modes do not result in catastrophic performance degradation. The project involves exploiting a generalised MHD code to describe high frequency Compressional Alfven eigenmode activity in high plasma performance international experiments.
This project will explore how fast-ion distributions evolve in the presence of a wave field via simulations of a one-dimensional “bump-on-tail” system, offering the possibility of efficiently computing the ion dynamics in real tokamaks.
At large amplitude these bursty energetic particle driven fishbones have been observed to evolve into long-lived "helical" structures in several tokamaks, notably the Mega Ampere Spherical Tokamak of the Culham Centre for Fusion Energy. In this project we investigate the role of energetic particles during the transition from bursting fishbone to a long-living mode.
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