PB3D: a new code for 3D ideal linear peeling-ballooning stability

T. Weyens, R. Sanchez, G. Huijsmans, L. Garcia, A. Loarte

Research output: Contribution to conferenceAbstractAcademic

Abstract

Ideal peeling-ballooning modes are important for magnetic nuclear fusion devices, but most of the theoretical and computational work that has been performed over the years to gain insight into their inner workings and consequences has been limited to axisymmetric (so-called 2D) cases which limits the range of applicability of the results. For example, the proposed use of perturbation coils in tokamaks to destabilize ELMS before they have a chance to grow dangerous has an inherently non-axisymmetric (3D) nature. Furthermore, many devices, such as stellarators, are intrinsically not axisymmetric. In this contribution we present a new code, PB3D (Peeling-Ballooning in 3D), that implements the equations of a previously developed theory that overcomes these stringent limitations by making no use of an axisymmetric approximation. The first benchmarking results of PB3D, dealing with the investigation of the stability properties of magnetic equilibria with nested flux surfaces obtained numerically from multiple equilibrium codes, such as HELENA and VMEC, are presented here. The results will be compared with those of various axisymmetric stability codes.
Original languageEnglish
Publication statusPublished - 1 Nov 2015
EventAPS Division of Plasma Physics Meeting 2015 - Savannah, United States
Duration: 16 Nov 201520 Nov 2015

Conference

ConferenceAPS Division of Plasma Physics Meeting 2015
CountryUnited States
CitySavannah
Period16/11/1520/11/15

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