Abstract Details
Abstracts
Author: Lucas F. McConnell
Requested Type: Poster
Submitted: 2026-03-16 05:59:22
Co-authors: J. T. Omotani, S. L. Newton, M. A. Barnes, F. I. Parra
Contact Info:
University of Oxford
Parks Road
Oxford, Oxfordshire OX1 3PU
United Kingdom
Abstract Text:
Modelling the edge of tokamak plasmas is essential for modern fusion research. Improved understanding and control of the edge can significantly alleviate the heat and particle loads endured by plasma facing components. By directly comparing a 1D1V drift kinetic solver to its fluid counterpart, this work shows that the two models converge at high collisionality, but differ significantly at collisionalities representative of a typical spherical tokamak edge. These profile differences can lead to order 1m changes in the predicted force balance locations of a trace Ar+ impurity along a 14m edge field line. The disparity has been used to show the variation in stagnation points for trace impurities based on background profiles. Current work involves testing 2V effects such as trapping for an edge field line, and the effect of temperature on pressure anisotropy and plasma profiles.
Characterization: 2.0
Comments:
N/A