Interpretative and predictive modelling of Joint European Torus collisionality scans

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http://hdl.handle.net/10138/312076

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JET Contributors , Eriksson , F , Fransson , E , Oberparleiter , M , Nordman , H , Strand , P , Salmi , A , Tala , T & Ahlgren , T 2019 , ' Interpretative and predictive modelling of Joint European Torus collisionality scans ' , Plasma Physics and Controlled Fusion , vol. 61 , no. 11 , 115004 . https://doi.org/10.1088/1361-6587/ab2f45

Julkaisun nimi: Interpretative and predictive modelling of Joint European Torus collisionality scans
Tekijä: JET Contributors; Eriksson, F.; Fransson, E.; Oberparleiter, M.; Nordman, H.; Strand, P.; Salmi, A.; Tala, T.; Ahlgren, T.
Tekijän organisaatio: Department of Physics
Materials Physics
Päiväys: 2019-11
Kieli: eng
Sivumäärä: 12
Kuuluu julkaisusarjaan: Plasma Physics and Controlled Fusion
ISSN: 0741-3335
DOI-tunniste: https://doi.org/10.1088/1361-6587/ab2f45
URI: http://hdl.handle.net/10138/312076
Tiivistelmä: 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)over-right-arrow x (b)over-right-arrow 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.
Avainsanat: turbulence
ITG
gyro-fluid
modelling
particle transport
DENSITY PROFILE
TRANSPORT
PEAKING
FLUX
114 Physical sciences
Vertaisarvioitu: Kyllä
Tekijänoikeustiedot: cc_by
Pääsyrajoitteet: openAccess
Rinnakkaistallennettu versio: publishedVersion


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