Thermal confinement and transport in spherical tokamaks: a review

SM Kaye, JW Connor, CM Roach - Plasma Physics and …, 2021 - iopscience.iop.org
In this paper, we review the thermal plasma confinement and transport properties observed
and predicted in low aspect ratio tokamaks, or spherical tokamaks (STs), which can depart …

[HTML][HTML] Recent progress on spherical torus research

M Ono, R Kaita - Physics of Plasmas, 2015 - pubs.aip.org
The spherical torus or spherical tokamak (ST) is a member of the tokamak family with its
aspect ratio (A= R 0/a) reduced to A∼ 1.5, well below the normal tokamak operating range …

Saturated ideal modes in advanced tokamak regimes in MAST

IT Chapman, MD Hua, SD Pinches, RJ Akers… - Nuclear …, 2010 - iopscience.iop.org
MAST plasmas with a safety factor above unity and a profile with either weakly reversed
shear or broad low-shear regions, regularly exhibit long-lived saturated ideal …

Plasma regimes and research goals of JT-60SA towards ITER and DEMO

Y Kamada, P Barabaschi, S Ishida, S Ide… - Nuclear …, 2011 - iopscience.iop.org
The JT-60SA device has been designed as a highly shaped large superconducting tokamak
with a variety of plasma actuators (heating, current drive, momentum input, stability control …

Design elements and first data from a new Doppler backscattering system on the MAST-U spherical tokamak

TL Rhodes, CA Michael, P Shi, R Scannell… - Review of Scientific …, 2022 - pubs.aip.org
ABSTRACT A new Doppler backscattering (DBS) system has been installed and tested on
the MAST-U spherical tokamak. It utilizes eight simultaneous fixed frequency probe beams …

Open field equilibrium current and cross-field passing electrons as an initiator of a closed flux surface in EC-heated toroidal plasmas

T Maekawa, T Yoshinaga, M Uchida… - Nuclear …, 2012 - iopscience.iop.org
A model for the non-inductive initiation of a closed flux surface observed in electron
cyclotron (EC) heated toroidal plasmas is presented. First, a pressure-driven equilibrium …

Pedestal analysis of MAST ELMy regimes

SF Smith, A Kirk, B Chapman-Oplopoiou… - Plasma Physics and …, 2022 - iopscience.iop.org
Abstract Mega Ampere Spherical Tokamak (MAST) pedestal data has been analysed, where
a pedestal database of 892 shots was obtained, using the upgraded MAST Thomson …

A survey of electron Bernstein wave heating and current drive potential for spherical tokamaks

J Urban, J Decker, Y Peysson, J Preinhaelter… - Nuclear …, 2011 - iopscience.iop.org
The electron Bernstein wave (EBW) is typically the only wave in the electron cyclotron (EC)
range that can be applied in spherical tokamaks for heating and current drive (H&CD) …

Identifying the impact of rotation, anisotropy, and energetic particle physics in tokamaks

MJ Hole, G Von Nessi, M Fitzgerald… - Plasma Physics and …, 2011 - iopscience.iop.org
In this paper we study the effects of poloidal and toroidal rotation, and anisotropy in
tokamaks. To resolve these effects from uncertainties in the data, we introduce a Bayesian …

L–H transition and pedestal studies on MAST

H Meyer, MFM De Bock, NJ Conway, SJ Freethy… - Nuclear …, 2011 - iopscience.iop.org
On MAST studies of the profile evolution of the electron temperature (T e), electron density
(ne), radial electric field (E r) as well as novel measurements of the ion temperature (T i) and …