Interpretative and predictive modelling of Joint European Torus collisionality scans

Interpretative and predictive modelling of Joint European Torus collisionality scans

Transport modelling of Joint European Torus (JET) dimensionless collisionality scaling experiments in various operational scenarios is presented. Interpretative simulations at a fixed radial position are combined with predictive JETTO simulations of temperatures and densities, using the TGLF transpo...

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Veröffentlicht in:Plasma physics and controlled fusion 2019, Vol.61 (11), p.115004
Hauptverfasser: Eriksson, F, Fransson, E, Oberparleiter, M, Nordman, H, Strand, P, Salmi, A, Tala, T
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gyro-fluid
ITG
modelling
particle transport
turbulence
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container_end_page
container_issue 11
container_start_page 115004
container_title Plasma physics and controlled fusion
container_volume 61
creator Eriksson, F
Fransson, E
Oberparleiter, M
Nordman, H
Strand, P
Salmi, A
Tala, T
description Transport modelling of Joint European Torus (JET) dimensionless collisionality scaling experiments in various operational scenarios is presented. Interpretative simulations at a fixed radial position are combined with predictive JETTO simulations of temperatures and densities, using the TGLF transport model. The model includes electromagnetic effects and collisions as well as E ⃗ × B ⃗ shear in Miller geometry. Focus is on particle transport and the role of the neutral beam injection (NBI) particle source for the density peaking. The experimental 3-point collisionality scans include L-mode, and H-mode (D and H and higher beta D plasma) plasmas in a total of 12 discharges. Experimental results presented in (Tala et al 2017 44th EPS Conf.) indicate that for the H-mode scans, the NBI particle source plays an important role for the density peaking, whereas for the L-mode scan, the influence of the particle source is small. In general, both the interpretative and predictive transport simulations support the experimental conclusions on the role of the NBI particle source for the 12 JET discharges.
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subjects gyro-fluid
ITG
modelling
particle transport
turbulence
title Interpretative and predictive modelling of Joint European Torus collisionality scans
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