Enhanced performance in fusion plasmas through turbulence suppression by megaelectronvolt ions

S Mazzi, J Garcia, D Zarzoso, YO Kazakov, J Ongena… - Nature Physics, 2022 - nature.com
Alpha particles with energies on the order of megaelectronvolts will be the main source of
plasma heating in future magnetic confinement fusion reactors. Instead of heating fuel ions …

Overview of interpretive modelling of fusion performance in JET DTE2 discharges with TRANSP

Ž Štancar, KK Kirov, F Auriemma, HT Kim… - Nuclear …, 2023 - iopscience.iop.org
In the paper we present an overview of interpretive modelling of a database of JET-ILW
2021 DT discharges using the TRANSP code. The main aim is to assess our capability of …

Data-driven profile prediction for DIII-D

J Abbate, R Conlin, E Kolemen - Nuclear Fusion, 2021 - iopscience.iop.org
A new, fully data-driven algorithm has been developed that uses a neural network to predict
plasma profiles on a scale of τ E into the future given an actuator trajectory and the plasma …

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 …

Offline contextual bayesian optimization

I Char, Y Chung, W Neiswanger… - Advances in …, 2019 - proceedings.neurips.cc
In black-box optimization, an agent repeatedly chooses a configuration to test, so as to find
an optimal configuration. In many practical problems of interest, one would like to optimize …

Time-dependent experimental identification of inter-ELM microtearing modes in the tokamak edge on DIII-D

AO Nelson, FM Laggner, A Diallo, D Smith… - Nuclear …, 2021 - iopscience.iop.org
In a series of discharges on the DIII-D tokamak, fast vertical plasma jogs are used to induce
current perturbations in the steep gradient region of the H-mode edge. These current …

[HTML][HTML] Flexible, integrated modeling of tokamak stability, transport, equilibrium, and pedestal physics

BC Lyons, J McClenaghan, T Slendebroek… - Physics of …, 2023 - pubs.aip.org
The STEP (Stability, Transport, Equilibrium, and Pedestal) integrated-modeling tool has
been developed in OMFIT to predict stable, tokamak equilibria self-consistently with core …

OMFIT tokamak profile data fitting and physics analysis

NC Logan, BA Grierson, SR Haskey… - Fusion Science and …, 2018 - Taylor & Francis
Abstract One Modeling Framework for Integrated Tasks (OMFIT) has been used to develop a
consistent tool for interfacing with, mapping, visualizing, and fitting tokamak profile …

Main ion and impurity edge profile evolution across the L-to H-mode transition on DIII-D

SR Haskey, BA Grierson, C Chrystal… - Plasma Physics and …, 2018 - iopscience.iop.org
Detailed measurements of the main ion (${D}^{+} $) and impurity ion (${C}^{6+} $) evolution
during the development of the H-mode pedestal across an L–H transition show significant …

[HTML][HTML] Active spectroscopy measurements of the deuterium temperature, rotation, and density from the core to scrape off layer on the DIII-D tokamak

SR Haskey, BA Grierson, L Stagner… - Review of Scientific …, 2018 - pubs.aip.org
Main-ion charge exchange recombination spectroscopy (MICER) uses the neutral beam
induced D α spectrum to measure the local deuterium ion (D+) temperature, rotation, and …