Pulsed Spherical Tokamak—A New Approach to Fusion Reactors

Traditionally, spherical tokamak (ST) reactors are considered to operate in a steady state. This paper analyses the advantages of a pulsed ST reactor. The methodology developed for conventional tokamak (CT) reactors is used and it is shown that advantages of a pulsed operation are even more pronounc...

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Main Authors: Mikhail Gryaznevich, Valery A. Chuyanov, Yuichi Takase
Format: Article
Language:English
Published: MDPI AG 2022-05-01
Series:Plasma
Subjects:
Online Access:https://www.mdpi.com/2571-6182/5/2/19
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author Mikhail Gryaznevich
Valery A. Chuyanov
Yuichi Takase
author_facet Mikhail Gryaznevich
Valery A. Chuyanov
Yuichi Takase
author_sort Mikhail Gryaznevich
collection DOAJ
description Traditionally, spherical tokamak (ST) reactors are considered to operate in a steady state. This paper analyses the advantages of a pulsed ST reactor. The methodology developed for conventional tokamak (CT) reactors is used and it is shown that advantages of a pulsed operation are even more pronounced in an ST reactor because of its ability to operate at a higher beta, therefore achieving a higher bootstrap current fraction, which, together with a lower inductance, reduces requirements for magnetic flux from the central solenoid for the plasma current ramp-up and sustainment.
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spelling doaj.art-e412d63c00c14357a0f02ce63be2a6c22023-11-23T18:35:35ZengMDPI AGPlasma2571-61822022-05-015224725710.3390/plasma5020019Pulsed Spherical Tokamak—A New Approach to Fusion ReactorsMikhail Gryaznevich0Valery A. Chuyanov1Yuichi Takase2Tokamak Energy Ltd., 173 Brook Drive, Milton Park, Abingdon OX14 4SD, UKTokamak Energy Ltd., 173 Brook Drive, Milton Park, Abingdon OX14 4SD, UKTokamak Energy Ltd., 173 Brook Drive, Milton Park, Abingdon OX14 4SD, UKTraditionally, spherical tokamak (ST) reactors are considered to operate in a steady state. This paper analyses the advantages of a pulsed ST reactor. The methodology developed for conventional tokamak (CT) reactors is used and it is shown that advantages of a pulsed operation are even more pronounced in an ST reactor because of its ability to operate at a higher beta, therefore achieving a higher bootstrap current fraction, which, together with a lower inductance, reduces requirements for magnetic flux from the central solenoid for the plasma current ramp-up and sustainment.https://www.mdpi.com/2571-6182/5/2/19spherical tokamak (ST)reactorpulsed reactor
spellingShingle Mikhail Gryaznevich
Valery A. Chuyanov
Yuichi Takase
Pulsed Spherical Tokamak—A New Approach to Fusion Reactors
Plasma
spherical tokamak (ST)
reactor
pulsed reactor
title Pulsed Spherical Tokamak—A New Approach to Fusion Reactors
title_full Pulsed Spherical Tokamak—A New Approach to Fusion Reactors
title_fullStr Pulsed Spherical Tokamak—A New Approach to Fusion Reactors
title_full_unstemmed Pulsed Spherical Tokamak—A New Approach to Fusion Reactors
title_short Pulsed Spherical Tokamak—A New Approach to Fusion Reactors
title_sort pulsed spherical tokamak a new approach to fusion reactors
topic spherical tokamak (ST)
reactor
pulsed reactor
url https://www.mdpi.com/2571-6182/5/2/19
work_keys_str_mv AT mikhailgryaznevich pulsedsphericaltokamakanewapproachtofusionreactors
AT valeryachuyanov pulsedsphericaltokamakanewapproachtofusionreactors
AT yuichitakase pulsedsphericaltokamakanewapproachtofusionreactors