Ion heating characteristics of merging spherical tokamak plasmas for burning high-beta plasma formation

Autor:	Y. Ono, H. Tanabe, M. Inomoto
Jazyk:	angličtina
Rok vydání:	2024
Předmět:	magnetic reconnection spherical tokamak field-reversed configuration absolute minimum-B reconnection heating reversed shear Nuclear and particle physics. Atomic energy. Radioactivity QC770-798
Zdroj:	Nuclear Fusion, Vol 64, Iss 8, p 086020 (2024)
Druh dokumentu:	article
ISSN:	1741-4326 0029-5515
DOI:	10.1088/1741-4326/ad4a8e
Popis:	High-power ion heating of merging spherical tokamak (ST) plasma has been investigated using TS-3U, TS-4, and UTST at the University of Tokyo for future direct access to burning high-beta ST plasma without using any additional heating. We developed a two-fluid/kinetic interpretation of the promising scaling of ion heating energy that increases with the square of reconnecting magnetic field B _rec ∼ poloidal magnetic field B _p . We find that reconnection heating creates interesting high-beta ST plasmas with hollow currents and broad/hollow T _i profiles. These high-beta ST plasmas often have reversed-shear or absolute minimum-B profiles, depending on their reconnection heating power and q-values.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/ada0ed83bb5346b68a979074b959e8c3 Zobrazit plný text záznamu View record in DOAJ