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Gyrokinetic turbulence and transport in the Mega Ampere Spherical Tokamak

Abstract:

In this thesis we consider energy transport due to turbulence in the Mega Ampere Spherical Tokamak (MAST), using a multi-scale framework based on local δf gyrokinetics. Transport is modelled globally by means of local flux-tube simulations at each magnetic flux surface. In view of the evidence indicating that turbulent ion transport can be substantially suppressed by rotation shear, our flux tubes span only electron-gyroradius scales. This both simplifies our physics model and reduce...

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Role:
Supervisor
Type of award:
DPhil
Level of award:
Doctoral
Awarding institution:
University of Oxford

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