Speaker
Matteo Valerio Falessi
Description
See the full Abstract at http://ocs.ciemat.es/EPS2018ABS/pdf/O4.110.pdf
Transport theory of phase space zonal structures
M. V. Falessi1 and F. Zonca1,2
1 ENEA, Fusion and Nuclear Safety Department, C. R. Frascati, Via E. Fermi
45, 00044 Frascati (Roma), Italy,
matteo.falessi@enea.it
2 Institute for Fusion Theory and Simulation and Department of Physics,
Zhejiang University, Hangzhou 310027, China
ABSTRACT
A set of equations is derived that describes the transport of particles and
energy in a thermonuclear plasma on the energy confinement timescale. The
equations thus derived allow to study collisional and turbulent transport self-
consistently retaining the effect of magnetic field geometry without assuming
any scale separation between fluctuations and the reference state. In a previous
article [1], transport equations holding on the reference state lengthscale have
been derived using the moment approach introduced in [2]. Furthermore it has
been shown how this approach is not suitable for the description of smaller
length-scales. In this work, this analysis is extended to micro- and meso-scales
adopting the framework of phase space zonal structure theory [3, 4]. Previous
results are recovered in the long wavelength limit and, in the general case,
transport equations in the phase space for particles and energy are obtained
that correctly take into account meso-scale structures.
References
[1] M. V. Falessi and F. Zonca. Gyrokinetic theory for particle and energy
transport in fusion plasmas. Physics of Plasmas, 25(3):032306, 2018.
[2] F. L. Hinton and R. D. Hazeltine. Theory of plasma transport in toroidal
confinement systems. Reviews of Modern Physics, 48(2):239, 1976.
[3] F. Zonca, L. Chen, S. Briguglio, G. Fogaccia, G. Vlad, and X. Wang.
Nonlinear dynamics of phase space zonal structures and energetic particle
physics in fusion plasmas. New Journal of Physics, 17(1):013052, 2015.
[4] L. Chen and F. Zonca. Physics of alfvén waves and energetic particles in
burning plasmas. Reviews of Modern Physics, 88(1):015008, 2016.
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