Maximising D - T fusion power by optimising the plasma composition and beam choice in JET

D. Van Eester; E. Lerche; P. Huynh; T. Johnson; D. Yadikin; Z. Štancar; S. Aleiferis; D. Frigione; L. Garzotti; P. Lomas; C. Lowry; M. Maslov

doi:10.1088/1361-6587/ac5a09

Maximising D - T fusion power by optimising the plasma composition and beam choice in JET

D. Van Eester, E. Lerche, P. Huynh, T. Johnson, D. Yadikin, Z. Štancar, S. Aleiferis, D. Frigione, L. Garzotti, P. Lomas, C. Lowry, M. Maslov

Laboratory for Plasma Physics

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

Abstract

JET has a neutral beam injection as well as a radio frequency (RF) system for bringing plasmas to fusion-relevant temperatures. The former allows D as well as T birth energies of the order of 100-120 keV while the latter has the flexibility to heat a variety of populations by adjusting the antenna frequency. In this paper it is illustrated that - when the JET plasma is heated - the power harvested from D - T fusion reactions favours operating away from the 50-50 D - T balance and that exploiting pure D beams is more beneficial than combined D and T beams as well as pure T beams. Although beam heating dominates the overall behaviour in JET - as much more beam power than wave power can be coupled to the plasma - RF heating allows efficient heating of the very core.

Original language	English
Article number	055014
Journal	Plasma Physics and Controlled Fusion
Volume	64
Issue number	5
DOIs	https://doi.org/10.1088/1361-6587/ac5a09
Publication status	Published - May 2022

Keywords

ICRH
JET
NBI
baseline experiment
modelling
optimisation

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title = "Maximising D - T fusion power by optimising the plasma composition and beam choice in JET",

abstract = "JET has a neutral beam injection as well as a radio frequency (RF) system for bringing plasmas to fusion-relevant temperatures. The former allows D as well as T birth energies of the order of 100-120 keV while the latter has the flexibility to heat a variety of populations by adjusting the antenna frequency. In this paper it is illustrated that - when the JET plasma is heated - the power harvested from D - T fusion reactions favours operating away from the 50-50 D - T balance and that exploiting pure D beams is more beneficial than combined D and T beams as well as pure T beams. Although beam heating dominates the overall behaviour in JET - as much more beam power than wave power can be coupled to the plasma - RF heating allows efficient heating of the very core.",

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doi = "10.1088/1361-6587/ac5a09",

language = "English",

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AU - Van Eester, D.

AU - Lerche, E.

AU - Huynh, P.

AU - Johnson, T.

AU - Yadikin, D.

AU - Štancar, Z.

AU - Aleiferis, S.

AU - Frigione, D.

AU - Garzotti, L.

AU - Lomas, P.

AU - Lowry, C.

AU - Maslov, M.

PY - 2022/5

Y1 - 2022/5

N2 - JET has a neutral beam injection as well as a radio frequency (RF) system for bringing plasmas to fusion-relevant temperatures. The former allows D as well as T birth energies of the order of 100-120 keV while the latter has the flexibility to heat a variety of populations by adjusting the antenna frequency. In this paper it is illustrated that - when the JET plasma is heated - the power harvested from D - T fusion reactions favours operating away from the 50-50 D - T balance and that exploiting pure D beams is more beneficial than combined D and T beams as well as pure T beams. Although beam heating dominates the overall behaviour in JET - as much more beam power than wave power can be coupled to the plasma - RF heating allows efficient heating of the very core.

AB - JET has a neutral beam injection as well as a radio frequency (RF) system for bringing plasmas to fusion-relevant temperatures. The former allows D as well as T birth energies of the order of 100-120 keV while the latter has the flexibility to heat a variety of populations by adjusting the antenna frequency. In this paper it is illustrated that - when the JET plasma is heated - the power harvested from D - T fusion reactions favours operating away from the 50-50 D - T balance and that exploiting pure D beams is more beneficial than combined D and T beams as well as pure T beams. Although beam heating dominates the overall behaviour in JET - as much more beam power than wave power can be coupled to the plasma - RF heating allows efficient heating of the very core.

KW - ICRH

KW - JET

KW - NBI

KW - baseline experiment

KW - modelling

KW - optimisation

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ER -

Maximising D - T fusion power by optimising the plasma composition and beam choice in JET

Abstract

Keywords

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