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dc.contributor.advisorDorland, Williamen_US
dc.contributor.authorWilkie, George Johnen_US
dc.date.accessioned2016-02-06T06:43:39Z
dc.date.available2016-02-06T06:43:39Z
dc.date.issued2015en_US
dc.identifierhttps://doi.org/10.13016/M2PM7Q
dc.identifier.urihttp://hdl.handle.net/1903/17302
dc.description.abstractA burning Deuterium-Tritium plasma is one which depends upon fusion-produced alpha particles for self-heating. Whether a plasma can reach a burning state requires knowledge of the transport of alpha particles, and turbulence is one such source of transport. The alpha particle distribution in collisional equilibrium forms a non-Maxwellian tail which spans orders of magnitude in energy, and it is this tail that is responsible for heating the plasma. Newly-born high-energy alpha particles are not expected to respond to turbulence as strongly as alpha particles that have slowed down to the bulk plasma temperature. This dissertation presents a low-collisionality derivation of gyrokinetics relevant for alpha particles and describes the upgrades made to the GS2 flux-tube code to handle general non-Maxwellian energy distributions. With the ability to run self-consistent simulations with a population of alpha particles, we can examine certain assumptions commonly made about alpha particles in the context of microturbulence. It is found that microturbulence can compete with collisional slowing-down, altering the distribution further. One assumption that holds well in electrostatic turbulence is the trace approximation, which is built upon to develop a model for efficiently calculating the coupled radial-energy turbulent transport of a non-Maxwellian species. A new code was written for this purpose and corrections to the global alpha particle heating profile due to microturbulence in an ITER-like scenario are presented along with sensitivity studies.en_US
dc.language.isoenen_US
dc.titleMicroturbulent transport of non-Maxwellian alpha particlesen_US
dc.typeDissertationen_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.contributor.departmentPhysicsen_US
dc.subject.pqcontrolledPlasma physicsen_US
dc.subject.pquncontrolledalpha particlesen_US
dc.subject.pquncontrolledcomputationalen_US
dc.subject.pquncontrolledfusionen_US
dc.subject.pquncontrolledgyrokineticsen_US
dc.subject.pquncontrolledtransporten_US
dc.subject.pquncontrolledturbulenceen_US


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