Dimensionless collisionality scans for core particle transport in JET
Conference contribution, 2015

Density peaking increases in the inner core (r/a=0.3) from 0.3 to 2.7 and in the outer core (r/a=0.8) from 1.6 to 3.5 when ν∗ decreases from 0.47 to 0.09 in JET H-mode plasmas while density peaking does not depend on ν∗ in JET L-mode plasma. For this particular scan, experimental evidence indicates that a dominant part of this peaking originates from NBI fuelling and inward pinch is a subdominant fraction. This is supported by the simple linear runs with GYRO although much more work is needed here to make a conclusion. More discharges are needed to quantify more precisely the fractions of these two contributions and also much more work is required on the modelling front to make exact comparisons.

Author

T. Tala

Technical Research Centre of Finland (VTT)

P. Mantica

Culham Lab

A. Salmi

Technical Research Centre of Finland (VTT)

C. Bourdelle

The French Alternative Energies and Atomic Energy Commission (CEA)

C. Giroud

Culham Lab

J. Hillesheim

Culham Lab

C. Maggi

Culham Lab

L. Meneses

Instituto Superior Tecnico

M. Maslov

Culham Lab

S. Menmuir

Culham Lab

Sara Moradi

Laboratoire de physique des plasmas

S. Mordijck

The College of William and Mary

V. Naulin

Technical University of Denmark (DTU)

Hans Nordman

Chalmers, Earth and Space Sciences, Plasma Physics and Fusion Energy

J. J. Rasmussen

Technical University of Denmark (DTU)

G. Sips

European Commission

A. Sirinelli

Culham Lab

M. Tsalas

H. Weisen

Ecole Polytechnique Federale De Lausanne

42nd European Physical Society Conference on Plasma Physics, EPS 2015, Lisbon, Portugal, 22-26 June 2015

Subject Categories

Fusion, Plasma and Space Physics

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9/6/2018 1