Recent progress in the interaction between energetic particles and tearing modes

H Cai, D Li - National Science Review, 2022 - academic.oup.com
The dynamics of energetic particles and tearing modes and the interactions between them
are of great significance for magnetically confined fusion plasmas. In this review, we focus …

Velocity-space sensitivity and inversions of synthetic ion cyclotron emission

BS Schmidt, M Salewski, BCG Reman, RO Dendy… - Physics of …, 2023 - pubs.aip.org
This paper introduces a new model to find the velocity-space location of energetic ions
generating ion cyclotron emission (ICE) in plasmas. ICE is thought to be generated due to …

Alfvén eigenmode classification based on ECE diagnostics at DIII-D using deep recurrent neural networks

A Jalalvand, AA Kaptanoglu, AV Garcia… - Nuclear …, 2021 - iopscience.iop.org
Modern tokamaks have achieved significant fusion production, but further progress towards
steady-state operation has been stymied by a host of kinetic and MHD instabilities. Control …

Exploring data-driven models for spatiotemporally local classification of Alfvén eigenmodes

AA Kaptanoglu, A Jalalvand, AV Garcia… - Nuclear …, 2022 - iopscience.iop.org
Alfvén eigenmodes (AEs) are an important and complex class of plasma dynamics
commonly observed in tokamaks and other plasma devices. In this work, we manually …

A new FILDSIM model for improved velocity-space sensitivity modelling and reconstructions

BS Schmidt, J Poley-Sanjuán… - Plasma Physics and …, 2024 - iopscience.iop.org
We present a new version of the FILDSIM code (Galdon-Quíroga et al 2018 Plasma Phys.
Control. Fusion60 105005), which significantly refines the modelling of the fast-ion loss …

Anisotropic regularization for inversion of fast-ion loss detector measurements

BS Schmidt, JS Jørgensen, J Rueda-Rueda… - Nuclear …, 2024 - iopscience.iop.org
We introduce an anisotropic regularization framework for the reconstruction of distribution
functions from measurements, utilizing an approach that applies distinct regularization …

Fast-ion velocity-space tomography using slowing-down regularization in EAST plasmas with co-and counter-current neutral beam injection

B Madsen, J Huang, M Salewski… - Plasma Physics and …, 2020 - iopscience.iop.org
We demonstrate 2D reconstructions of the fast-ion velocity distribution from two-view fast-ion
D-alpha (FIDA) measurements at the EAST tokamak. By expressing the distribution in a …

Tomographic reconstructions of the fast-ion phase space using imaging neutral particle analyser measurements

J Rueda-Rueda, M Garcia-Munoz… - Plasma Physics and …, 2024 - iopscience.iop.org
In this paper we demonstrate how the inversion, in energy and major radius (E, R)
coordinates, of imaging neutral particle analyser (INPA) measurements can be used to …

Fast-ion orbit sensitivity of neutron emission spectroscopy diagnostics

H Järleblad, L Stagner, M Salewski… - Review of Scientific …, 2021 - pubs.aip.org
Fast ions in fusion plasmas often leave characteristic signatures in the plasma neutron
emission. Measurements of this emission are subject to the phase-space sensitivity of the …

Determining 1D fast-ion velocity distribution functions from ion cyclotron emission data using deep neural networks

BS Schmidt, M Salewski, B Reman… - Review of Scientific …, 2021 - pubs.aip.org
The relationship between simulated ion cyclotron emission (ICE) signals s and the
corresponding 1D velocity distribution function fv⊥ of the fast ions triggering the ICE is …