Journal Article

FZJ-2023-01914

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Achievement of ion temperatures in excess of 100 million degrees Kelvin in the compact high-field spherical tokamak ST40

McNamara, S. A. M. (Corresponding author) ; Asunta, O. ; Bland, J. ; Buxton, P. F. ; Colgan, C. ; Dnestrovskii, A. ; Gemmell, M. ; Gryaznevich, M. ; Hoffman, D. ; Janky, F. ; Lister, J. B. ; Lowe, H. F. ; Mirfayzi, R. S. ; Naylor, G. ; Nemytov, V. ; Njau, J. ; Pyragius, T. ; Rengle, A. ; Romanelli, M. ; Romero, C. ; Sertoli, M. ; Shevchenko, V. ; Sinha, J. ; Sladkomedova, A. ; Sridhar, S. ; Takase, Y. ; Thomas, P. ; Varje, J. ; Vincent, B. ; Willett, H. V. ; Wood, J. ; Zakhar, D. ; Battaglia, D. J. ; Kaye, S. M. ; Delgado-Aparicio, L. F. ; Maingi, R. ; Mueller, D. ; Podesta, M. ; Delabie, E. ; Lomanowski, B.FZJ* ; Marchuk, O.FZJ*

2023
IAEA Vienna

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Please use a persistent id in citations: http://hdl.handle.net/2128/34340  doi:10.1088/1741-4326/acbec8

Abstract: Ion temperatures of over 100 million degrees Kelvin (8.6 keV) have been produced in the ST40 compact high-field spherical tokamak (ST). Ion temperatures in excess of 5 keV have not previously been reached in any ST and have only been obtained in much larger devices with substantially more plasma heating power. The corresponding fusion triple product is calculated to be ${n_{i0}}{T_{i0}}{\tau _E} \approx 6 \pm 2 \times {10^{18}}{{\text{m}}^{ - 3}}{\text{keVs}}$. These results demonstrate for the first time that ion temperatures relevant for commercial magnetic confinement fusion can be obtained in a compact high-field ST and bode well for fusion power plants based on the high-field ST.

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Contributing Institute(s):

1. Plasmaphysik (IEK-4)

Research Program(s):

1. 134 - Plasma-Wand-Wechselwirkung (POF4-134) (POF4-134)

Appears in the scientific report 2023

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Database coverage:
; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF < 5 ; JCR ; National-Konsortium ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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