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**Harvard**

Hoppe, M., Iantchenko, A. och Strandberg, I. (2015) *Simulation of Charged Particle Orbits in Fusion Plasmas*. Göteborg : Chalmers University of Technology

** BibTeX **

@misc{

Hoppe2015,

author={Hoppe, Mathias and Iantchenko, Aylwin and Strandberg, Ingrid},

title={Simulation of Charged Particle Orbits in Fusion Plasmas},

abstract={When designing a fusion device, knowledge of the particle motion inside the fusion plasma is crucial. The charged plasma particles are confined inside the device using
a strong magnetic field, which influences particle motion. Particle trajectories can therefore be obtained by numerically solving the equations of motion for a charged
particle in the confining magnetic field.
With the simulation tool developed as a part of this project, charged particle
orbits are studied. Especially, the properties of the so called banana and passing
orbit topologies are studied and the observed results explained using theoretical models. We find expressions that approximately describe the width of the banana and passing orbits and the location of the banana orbit’s mirror points.
The orbit dependence on mass, charge and energy is investigated and an expression
for the particle’s deviation from a field line is derived. Also, the cause for banana orbits forming is studied and their occurrence is shown to depend on how
the particle’s velocity vector is directed. Finally, the two computational methods used, where either the particle or its guiding-center is followed, are compared with
respect to both energy conservation and computational time. The guiding-center approach is shown to greatly reduce computational cost.},

publisher={Institutionen för teknisk fysik, Chalmers tekniska högskola},

place={Göteborg},

year={2015},

note={62},

}

** RefWorks **

RT Generic

SR Electronic

ID 250827

A1 Hoppe, Mathias

A1 Iantchenko, Aylwin

A1 Strandberg, Ingrid

T1 Simulation of Charged Particle Orbits in Fusion Plasmas

YR 2015

AB When designing a fusion device, knowledge of the particle motion inside the fusion plasma is crucial. The charged plasma particles are confined inside the device using
a strong magnetic field, which influences particle motion. Particle trajectories can therefore be obtained by numerically solving the equations of motion for a charged
particle in the confining magnetic field.
With the simulation tool developed as a part of this project, charged particle
orbits are studied. Especially, the properties of the so called banana and passing
orbit topologies are studied and the observed results explained using theoretical models. We find expressions that approximately describe the width of the banana and passing orbits and the location of the banana orbit’s mirror points.
The orbit dependence on mass, charge and energy is investigated and an expression
for the particle’s deviation from a field line is derived. Also, the cause for banana orbits forming is studied and their occurrence is shown to depend on how
the particle’s velocity vector is directed. Finally, the two computational methods used, where either the particle or its guiding-center is followed, are compared with
respect to both energy conservation and computational time. The guiding-center approach is shown to greatly reduce computational cost.

PB Institutionen för teknisk fysik, Chalmers tekniska högskola,PB Institutionen för teknisk fysik, Chalmers tekniska högskola,PB Institutionen för teknisk fysik, Chalmers tekniska högskola,

LA eng

LK http://publications.lib.chalmers.se/records/fulltext/250827/250827.pdf

OL 30