Achievement of ion temperatures in excess of 100 million degrees Kelvin in the compact high-field spherical tokamak ST40

the ST40 Team

doi:10.1088/1741-4326/acbec8

Achievement of ion temperatures in excess of 100 million degrees Kelvin in the compact high-field spherical tokamak ST40

the ST40 Team

Power Exhaust and Particle Control

Research output: Contribution to journal › Article › peer-review

25 Scopus citations

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 i 0 T i 0 τ E ≈ 6 ± 2 × 10 18 m − 3 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.

Original language	English
Article number	054002
Journal	Nuclear Fusion
Volume	63
Issue number	5
DOIs	https://doi.org/10.1088/1741-4326/acbec8
State	Published - May 2023

Funding

We gratefully acknowledge the hard work and dedication of the ST40 team; the support of the Tokamak Energy Board and shareholders; the guidance and scrutiny of the independent Diagnostics Advisory Board chaired by Alan Costley and attended by Kieran Gibson, Patrick Carolan, Jo Lister, Manfred von Hellermann, Francesco Orsitto and Tom Todd; and the contributions from collaborators at Princeton Plasma Physics Laboratory and Oak Ridge National Laboratory that were supported through U.S. Department of Energy CRADA NFE-19-07769.

Keywords

ST40
compact
high-field
spherical tokamak

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1088/1741-4326/acbec8

Cite this

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title = "Achievement of ion temperatures in excess of 100 million degrees Kelvin in the compact high-field spherical tokamak ST40",

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 i 0 T i 0 τ E ≈ 6 ± 2 × 10 18 m − 3 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.",

keywords = "ST40, compact, high-field, spherical tokamak",

author = "{the ST40 Team} and S. McNamara and O. Asunta and J. Bland and P. Buxton and C. Colgan and A. Dnestrovskii and M. Gemmell and M. Gryaznevich and D. Hoffman and F. Janky and J. Lister and H. Lowe and R. Mirfayzi and G. Naylor and V. Nemytov and J. Njau and T. Pyragius and A. Rengle and M. Romanelli and C. Romero and M. Sertoli and V. Shevchenko and J. Sinha and A. Sladkomedova and S. Sridhar and Y. Takase and P. Thomas and J. Varje and B. Vincent and H. Willett and J. Wood and D. Zakhar and D. Battaglia and S. Kaye and L. Delgado-Aparicio and R. Maingi and D. Mueller and M. Podesta and E. Delabie and B. Lomanowski and O. Marchuk",

note = "Publisher Copyright: {\textcopyright} 2023 The Author(s). Published on behalf of IAEA by IOP Publishing Ltd.",

year = "2023",

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doi = "10.1088/1741-4326/acbec8",

language = "English",

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journal = "Nuclear Fusion",

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T1 - Achievement of ion temperatures in excess of 100 million degrees Kelvin in the compact high-field spherical tokamak ST40

AU - the ST40 Team

AU - McNamara, S.

AU - Asunta, O.

AU - Bland, J.

AU - Buxton, P.

AU - Colgan, C.

AU - Dnestrovskii, A.

AU - Gemmell, M.

AU - Gryaznevich, M.

AU - Hoffman, D.

AU - Janky, F.

AU - Lister, J.

AU - Lowe, H.

AU - Mirfayzi, R.

AU - Naylor, G.

AU - Nemytov, V.

AU - Njau, J.

AU - Pyragius, T.

AU - Rengle, A.

AU - Romanelli, M.

AU - Romero, C.

AU - Sertoli, M.

AU - Shevchenko, V.

AU - Sinha, J.

AU - Sladkomedova, A.

AU - Sridhar, S.

AU - Takase, Y.

AU - Thomas, P.

AU - Varje, J.

AU - Vincent, B.

AU - Willett, H.

AU - Wood, J.

AU - Zakhar, D.

AU - Battaglia, D.

AU - Kaye, S.

AU - Delgado-Aparicio, L.

AU - Maingi, R.

AU - Mueller, D.

AU - Podesta, M.

AU - Delabie, E.

AU - Lomanowski, B.

AU - Marchuk, O.

PY - 2023/5

Y1 - 2023/5

N2 - 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 i 0 T i 0 τ E ≈ 6 ± 2 × 10 18 m − 3 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.

AB - 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 i 0 T i 0 τ E ≈ 6 ± 2 × 10 18 m − 3 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.

KW - ST40

KW - compact

KW - high-field

KW - spherical tokamak

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DO - 10.1088/1741-4326/acbec8

M3 - Article

AN - SCOPUS:85150484276

SN - 0029-5515

VL - 63

JO - Nuclear Fusion

JF - Nuclear Fusion

IS - 5

M1 - 054002

ER -

Achievement of ion temperatures in excess of 100 million degrees Kelvin in the compact high-field spherical tokamak ST40

Abstract

Funding

Keywords

UN SDGs

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