A hybrid full-wave Markov chain approach to calculating radio-frequency wave scattering from scrape-off layer filaments
The interaction of radio-frequency (RF) waves with edge turbulence modifies the incident
wave spectrum, and can significantly affect RF heating and current drive in tokamaks …
wave spectrum, and can significantly affect RF heating and current drive in tokamaks …
Developing high performance RF heating scenarios on the WEST tokamak
M Goniche, V Ostuni, C Bourdelle, P Maget… - Nuclear …, 2022 - iopscience.iop.org
High power experiments, up to 9.2 MW with LHCD and ICRH, have been carried out in the
full tungsten tokamak WEST. Quasi non inductive discharges have been achieved allowing …
full tungsten tokamak WEST. Quasi non inductive discharges have been achieved allowing …
Helicon full-wave modeling with scrape-off-layer turbulence on the DIII-D tokamak
C Lau, M Brookman, A Dimits, B Dudson… - Nuclear …, 2021 - iopscience.iop.org
Helicon waves have been recently proposed as an off-axis current drive actuator due to their
expected high current drive efficiency in the mid-radius region in high beta tokamaks. This …
expected high current drive efficiency in the mid-radius region in high beta tokamaks. This …
A model investigation of the impact of lower hybrid wave scattering angle on current drive profile in EAST and Alcator C-Mod
Lower hybrid current drive (LHCD) is beneficial for developing a steady-state operation
scenario in a tokamak. This paper conducts a modeling investigation to identify an optimum …
scenario in a tokamak. This paper conducts a modeling investigation to identify an optimum …
Full-wave model for the lower hybrid wave electric field vector with synthetic turbulence on Alcator C-Mod
The effects of synthetic turbulence on lower hybrid (LH) wave field magnitude and
polarization are studied on Alcator C-Mod. Three synthetic turbulence models are evaluated …
polarization are studied on Alcator C-Mod. Three synthetic turbulence models are evaluated …
Lower hybrid current drive in high aspect ratio tokamaks
Y Peysson, D Mazon, JF Artaud, A Ekedahl… - Journal of Fusion …, 2020 - Springer
A multi-machine study has been carried out to investigate the impact of a strongly bounded
wave propagation domain on the Lower Hybrid current drive, a condition which occurs …
wave propagation domain on the Lower Hybrid current drive, a condition which occurs …
[HTML][HTML] Full-wave simulations on helicon and parasitic excitation of slow waves near the edge plasma
EH Kim, M Ono, S Shiraiwa, N Bertelli, M Poulos… - Physics of …, 2024 - pubs.aip.org
Helicon waves are thought to be promising in various tokamaks, such as DIII-D, because
they can penetrate reactor-grade high-density cores and drive the off-axis current with …
they can penetrate reactor-grade high-density cores and drive the off-axis current with …
Modeling the spectral modification of lower hybrid wave in the presence of drift-wave type density fluctuation in the scrape-off-layer of the EAST tokamak
CB Wu, BJ Ding, MH Li, SG Baek, GM Wallace… - Physics of …, 2021 - pubs.aip.org
The spectrum change of the lower hybrid (LH) waves caused by a low-frequency density
fluctuation in the scrape-off-layer is studied by applying the wave scattering model …
fluctuation in the scrape-off-layer is studied by applying the wave scattering model …
Impact of lithium wall conditioning and wave-frequency on high density lower hybrid current drive experiment on EAST
A series of dedicated lower hybrid current drive (LHCD) experiments on EAST shows that
lithium wall conditioning extends LH current drive and heating up to the line-averaged …
lithium wall conditioning extends LH current drive and heating up to the line-averaged …
Machine learning for analysis of atomic spectral data
Physics based forward models are the basis on which many experimental diagnostics are
interpreted. For some diagnostics, models can be computationally expensive which …
interpreted. For some diagnostics, models can be computationally expensive which …