Neon seeding on JET has been proved to be compatible with high performance plasmas and can lead to higher confinement with respect to the equivalent unseeded pulses. In addition to this, neon is also needed for mitigating heat fluxes to the divertor. In this paper we present the results of the predictive modelling performed on two JET baseline ELMy H-modes, a Ne seeded pulse (JPN 96994) and an equivalent unseeded one (JPN 96730), carried out with the JINTRAC suite of codes and the QuaLiKiz transport model. The baseline scenario is one of the scenarios envisaged for achieving high fusion power with a steady performance, characterised by high plasma current and moderate normalised beta. The pulses share the same main plasma parameters, however, the Ne-seeded shot exhibits a slightly higher confinement and performance with respect to the unseeded one. In section 2 we describe the shots and the modelling settings, in section 3 we compare the QuaLiKiz turbulence spectra and discuss the neon effects on transport and in section 4 we draw some conclusions.

Neon seeding effects on two JET high performance baseline plasmas / Gabriellini, S.; Zotta, V. K.; Garzotti, L.; Bourdelle, C.; Casson, F. J.; Citrin, J.; Domenico, F.; Gatto, R.; Giovannozzi, E.; Koechl, F.; Lomas, P.; Marin, M.; Pucella, G.; Rimini, F.; Eester, D. V.. - (2022), pp. 1-4. ((Intervento presentato al convegno 48th European physical society conference on plasma physics, EPS 2022 tenutosi a Virtual, Online.

Neon seeding effects on two JET high performance baseline plasmas

Gabriellini S.
;
Zotta V. K.;Gatto R.;
2022

Abstract

Neon seeding on JET has been proved to be compatible with high performance plasmas and can lead to higher confinement with respect to the equivalent unseeded pulses. In addition to this, neon is also needed for mitigating heat fluxes to the divertor. In this paper we present the results of the predictive modelling performed on two JET baseline ELMy H-modes, a Ne seeded pulse (JPN 96994) and an equivalent unseeded one (JPN 96730), carried out with the JINTRAC suite of codes and the QuaLiKiz transport model. The baseline scenario is one of the scenarios envisaged for achieving high fusion power with a steady performance, characterised by high plasma current and moderate normalised beta. The pulses share the same main plasma parameters, however, the Ne-seeded shot exhibits a slightly higher confinement and performance with respect to the unseeded one. In section 2 we describe the shots and the modelling settings, in section 3 we compare the QuaLiKiz turbulence spectra and discuss the neon effects on transport and in section 4 we draw some conclusions.
48th European physical society conference on plasma physics, EPS 2022
nuclear fusion; magnetic confinement; tokamak; JET; impurity seeding; modelling
04 Pubblicazione in atti di convegno::04b Atto di convegno in volume
Neon seeding effects on two JET high performance baseline plasmas / Gabriellini, S.; Zotta, V. K.; Garzotti, L.; Bourdelle, C.; Casson, F. J.; Citrin, J.; Domenico, F.; Gatto, R.; Giovannozzi, E.; Koechl, F.; Lomas, P.; Marin, M.; Pucella, G.; Rimini, F.; Eester, D. V.. - (2022), pp. 1-4. ((Intervento presentato al convegno 48th European physical society conference on plasma physics, EPS 2022 tenutosi a Virtual, Online.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1659746
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