Publication: PB3D: A new code for edge 3-D ideal linear peeling-ballooning stability
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2017-02-01
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Elsevier
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Abstract
A new numerical code PB3D (Peeling-Ballooning in 3-D) is presented. It implements
and solves the intermediate-to-high-n ideal linear magnetohydrodynamic stability theory
extended to full edge 3-D magnetic toroidal configurations in previous work [1]. The
features that make PB3D unique are the assumptions on the perturbation structure
through intermediate-to-high mode numbers n in general 3-D configurations, while
allowing for displacement of the plasma edge. This makes PB3D capable of very
e cient calculations of the full 3-D stability for the output of multiple equilibrium
codes. As first verification, it is checked that results from the stability code MISHKA [2],
which considers axisymmetric equilibrium configurations, are accurately reproduced,
and these are then successfully extended to 3-D configurations, through comparison
with COBRA [3], as well as using checks on physical consistency. The non-intuitive
3-D results presented serve as a tentative first proof of the capabilities of the code.
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Keywords
PB3D, Ideal linear MHD stability, Peeling-ballooning, High-n, Edge, 3-D, Instabilities, Equilibria, Tokamaks
Bibliographic citation
Weyens, T., Sánchez, R., Huijsmans, G., Loarte, A., & García, L. (2017). PB3D: A new code for edge 3-D ideal linear peeling-ballooning stability. Journal of Computational Physics, 330, 997-1009