Simultaneous reproduction of experimental profiles, fluxes, transport coefficients, and turbulence characteristics via nonlinear gyrokinetic profile predictions in a DIII-D …

NT Howard, P Rodriguez-Fernandez, C Holland… - Physics of …, 2024 - pubs.aip.org
Experimental conditions obtained on the DIII-D tokamak in the ITER Similar Shape (ISS)
have been compared extensively with nonlinear gyrokinetic simulation using the CGYRO …

Development of compact tokamak fusion reactor use cases to inform future transport studies

C Holland, EM Bass, DM Orlov… - Journal of Plasma …, 2023 - cambridge.org
The OMFIT STEP (Meneghini et al., Nucl. Fusion, vol. 10, 2020, p. 1088) workflow has been
used to develop inductive and steady-state H-mode core plasma scenario use cases for a …

Radiative pulsed L-mode operation in ARC-class reactors

SJ Frank, CJ Perks, AO Nelson, T Qian, S Jin… - Nuclear …, 2022 - iopscience.iop.org
A new ARC-class, highly-radiative, pulsed, L-mode, burning plasma scenario is developed
and evaluated as a candidate for future tokamak reactors. Pulsed inductive operation …

Inference of main ion particle transport coefficients with experimentally constrained neutral ionization during edge localized mode recovery on DIII-D

AM Rosenthal, JW Hughes, FM Laggner… - Nuclear …, 2023 - iopscience.iop.org
The plasma and neutral density dynamics after an edge localized mode are investigated
and utilized to infer the plasma transport coefficients for the density pedestal. The Lyman …

Investigation of helium exhaust dynamics at the ASDEX Upgrade tokamak with full-tungsten wall

A Zito, M Wischmeier, A Kappatou, A Kallenbach… - Nuclear …, 2023 - iopscience.iop.org
An efficient removal of He ash by active pumping in future fusion devices is necessary to
avoid fuel dilution and not degrade the core confinement properties. Therefore, a deep …

An optical emission spectroscopy method for determining the electron temperature and density in low-temperature xenon plasma by using a collisional-radiative …

YF Wang, XM Zhu - Spectrochimica Acta Part B: Atomic Spectroscopy, 2023 - Elsevier
Optical emission spectroscopy (OES) is an important technique for the diagnostics of plasma
parameters in the development of plasma devices and material processing technology. OES …

Investigation of core impurity transport in DIII-D diverted negative triangularity plasmas

F Sciortino, NT Howard, T Odstrčil… - Plasma Physics and …, 2022 - iopscience.iop.org
Tokamak operation at negative triangularity has been shown to offer high energy
confinement without the typical disadvantages of edge pedestals (Marinoni et al 2021 Nucl …

First tungsten radiation studies in DIII-D's ITER baseline demonstration discharges

F Turco, TC Luce, ACC Sips, C Greenfield… - Nuclear …, 2024 - iopscience.iop.org
ITER Baseline Scenario plasmas were studied in DIII-D using krypton and xenon gases as a
proxy for the tungsten that will be present in ITER. These impurities were chosen for having …

Experimental inference of neutral and impurity transport in Alcator C-Mod using high-resolution x-ray and ultra-violet spectra

F Sciortino, NT Howard, R Reksoatmodjo… - Nuclear …, 2021 - iopscience.iop.org
We present experimental inferences of cross-field impurity transport coefficients for AlcatorC-
Mod plasmas without edge-localized modes, leveraging a novel forward model for the entire …

Achievement of highly radiating plasma in negative triangularity and effect of reactor-relevant seeded impurities on confinement and transport

L Casali, D Eldon, T Odstrcil, R Mattes… - Plasma Physics and …, 2024 - iopscience.iop.org
The first achievement of highly radiating plasmas in negative triangularity is shown with an
operational space featuring high core radiation at high Greenwald fraction obtained with the …