Novatron: Equilibrium and stability
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| Názov: | Novatron: Equilibrium and stability |
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| Autori: | Lindvall, K., Holmberg, R., Bendtz, K., Scheffel, Jan, 1954, Lundberg, J. |
| Zdroj: | Physics of Plasmas. 32(7) |
| Predmety: | Novatron, mirror fusion, mirror plasma, plasma equilibrium, plasma stability, interchange modes, Rosenbluth and Longmire, plasma simulation, WarpX, Atomic, Subatomic and Astrophysics, Atomär fysik, subatomär fysik och astrofysik |
| Popis: | The Novatron is a fusion concept characterized by its axisymmetric mirror-cusp magnetic topology. The magnetic field exhibits good curvature and a high mirror ratio. Plasma equilibrium profiles for the Novatron are obtained by solving an axisymmetric guiding-center anisotropic boundary-value problem. These profiles are then analyzed with respect to several magnetohydrodynamic (MHD) stability criteria, including the mirror, firehose, and interchange conditions. A generalized Rosenbluth and Longmire MHD interchange criterion, where anisotropic pressure variations along flux tubes are allowed for, is subsequently employed for determining stable MHD equilibria. Additionally, a corresponding CGL double adiabatic interchange criterion is derived to identify stable equilibria in the collisionless limit. These equilibria are also assessed numerically using the large scale Hybrid Particle-In-Cell code WarpX. |
| Popis súboru: | |
| Prístupová URL adresa: | https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-369228 https://doi.org/10.1063/5.0266976 |
| Databáza: | SwePub |
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Nájsť tento článok vo Web of Science | Abstrakt: | The Novatron is a fusion concept characterized by its axisymmetric mirror-cusp magnetic topology. The magnetic field exhibits good curvature and a high mirror ratio. Plasma equilibrium profiles for the Novatron are obtained by solving an axisymmetric guiding-center anisotropic boundary-value problem. These profiles are then analyzed with respect to several magnetohydrodynamic (MHD) stability criteria, including the mirror, firehose, and interchange conditions. A generalized Rosenbluth and Longmire MHD interchange criterion, where anisotropic pressure variations along flux tubes are allowed for, is subsequently employed for determining stable MHD equilibria. Additionally, a corresponding CGL double adiabatic interchange criterion is derived to identify stable equilibria in the collisionless limit. These equilibria are also assessed numerically using the large scale Hybrid Particle-In-Cell code WarpX. |
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| ISSN: | 1070664X 10897674 |
| DOI: | 10.1063/5.0266976 |