Neoclassical plasma viscosity and transport processes in non-axisymmetric tori

KC Shaing, K Ida, SA Sabbagh - Nuclear Fusion, 2015 - iopscience.iop.org
Neoclassical transport processes are important to the understanding of plasma confinement
physics in doubly periodic magnetized toroidal plasmas, especially, after the impact of the …

Rotation and momentum transport in tokamaks and helical systems

K Ida, JE Rice - Nuclear Fusion, 2014 - iopscience.iop.org
Poloidal and toroidal rotation has been recognized to play an important role in heat transport
and magnetohydrodynamic (MHD) stability in tokamaks and helical systems. It is well known …

Physics of non-diffusive turbulent transport of momentum and the origins of spontaneous rotation in tokamaks

PH Diamond, CJ McDevitt, ÖD Gürcan, TS Hahm… - Nuclear …, 2009 - iopscience.iop.org
Recent results in the theory of turbulent momentum transport and the origins of intrinsic
rotation are summarized. Special attention is focused on aspects of momentum transport …

Overview of toroidal momentum transport

AG Peeters, C Angioni, A Bortolon, Y Camenen… - Nuclear …, 2011 - iopscience.iop.org
Toroidal momentum transport mechanisms are reviewed and put in a broader perspective.
The generation of a finite momentum flux is closely related to the breaking of symmetry …

Transport of parallel momentum by collisionless drift wave turbulence

PH Diamond, CJ McDevitt, ÖD Gürcan, TS Hahm… - Physics of …, 2008 - pubs.aip.org
This paper presents a novel, unified approach to the theory of turbulent transport of parallel
momentum by collisionless drift waves. The physics of resonant and nonresonant off …

Toroidal rotation in DIII-D in electron cyclotron heating and Ohmic -mode discharges

JS DeGrassie, KH Burrell, LR Baylor, W Houlberg… - Physics of …, 2004 - pubs.aip.org
Spatially and temporally resolved toroidal rotation measurements have been made in DIII-D
[JL Luxon, Nucl. Fusion 42, 614 (2002)] discharges with no externally applied torque. The …

Prospects of X-ray imaging spectrometers for impurity transport: Recent results from the stellarator Wendelstein 7-X

A Langenberg, NA Pablant, T Wegner… - Review of Scientific …, 2018 - pubs.aip.org
This paper reports on the design and the performance of the recently upgraded X-ray
imaging spectrometer systems, X-ray imaging crystal spectrometer and high resolution X-ray …

Spontaneous toroidal rotation driven by the off-diagonal term of momentum and heat transport in the plasma with the ion internal transport barrier in LHD

K Ida, M Yoshinuma, K Nagaoka, M Osakabe… - Nuclear …, 2010 - iopscience.iop.org
A spontaneous rotation in the co-direction is observed in plasmas with an ion internal
transport barrier (ITB), where the ion temperature gradient is relatively large (∂ T i/∂ r∼ 5 …

Physics and engineering design of the low aspect ratio quasi-axisymmetric stellarator CHS-qa

S Okamura, K Matsuoka, S Nishimura, M Isobe… - Nuclear …, 2001 - iopscience.iop.org
A low aspect ratio quasi-axisymmetric stellarator, CHS-qa, has been designed. An
optimization code has been used to design a magnetic field configuration with evaluations of …

Formation of electron internal transport barriers by highly localized electron cyclotron resonance heating in the large helical device

T Shimozuma, S Kubo, H Idei… - Plasma physics and …, 2003 - iopscience.iop.org
Internal transport barriers with respect to electron thermal transport (eITB) were observed in
the large helical device, when the electron cyclotron resonance heating (ECH) power was …