Publications related to Self-consistent Simulations of ICRH with the Background Equilibrium in Tokamaks and Stellarators

Into the ice: Exploration and data capturing in glacial moulins by a tethered robot

Josephine Anna Eleanor Hughes, Max Mirko Polzin

Glacial moulins (cylindrical meltwater drainage shafts) provide valuable insights into glacier dynamics, but are inaccessible and hazardous environments for humans to study. Exploring them using passive sensor probes has revealed their complex geometry, wh ...

Hoboken2024

An experimental and computational study of tokamak plasma turbulence

Aylwin Iantchenko

Turbulence driven by small-scale instabilities results in strong heat and particle transport, which significantly shortens the confinement time and prevents the formation of a self-sustained plasma reaction in magnetic confinement devices. Control and poss ...

EPFL2023

Conjugate heat transfer in isolated granular clusters with interstitial fluid using lattice Boltzmann method

Mehrdad Kiani Oshtorjani

The conjugate heat transfer in mixtures of a fluid and single granular clusters is studied in this paper using a novel lattice Boltzmann method (LBM) programmed for parallel computation on the graphics processing unit (GPU). The LBM is validated for heat c ...

PERGAMON-ELSEVIER SCIENCE LTD2022

A localized reduced basis approach for unfitted domain methods on parameterized geometries

Annalisa Buffa, Pablo Antolin Sanchez, Margarita Chasapi

This work introduces a reduced order modeling (ROM) framework for the solution of parameterized second-order linear elliptic partial differential equations formulated on unfitted geometries. The goal is to construct efficient projection-based ROMs, which r ...

2022

Bounds on photon scattering

Denis Karateev, Kelian Philippe Häring, Marco Meineri, Aditya Hebbar

We study 2-to-2 scattering amplitudes of massless spin one particles in

d=4

space-time dimensions, like real world photons. We define a set of non-perturbative observables (Wilson coefficients) which describe these amplitudes at low energies. We use full ...

2022

Physics and applications of three-ion ICRF scenarios for fusion research

Henri Weisen, Javier García Hernández, Mikhail Maslov, Samuele Mazzi

This paper summarizes the physical principles behind the novel three-ion scenarios using radio frequency waves in the ion cyclotron range of frequencies (ICRF). We discuss how to transform mode conversion electron heating into a new flexible ICRF technique ...

AMER INST PHYSICS2021

Kalman filter density reconstruction in ICRH discharges on ASDEX Upgrade

Federico Alberto Alfredo Felici, Emiliano Fable

Plasma density is one of the key quantities that need to be controlled in real-time as it scales directly with fusion power and, if left uncontrolled, density limits can be reached leading to a disruption. On ASDEX Upgrade (AUG), the real-time measurements ...

ELSEVIER SCIENCE SA2021

Ion cyclotron resonance heating with shifted separatrix

Jonathan Graves, Hamish William Patten

Ion cyclotron resonance heating, which we refer to as ICRH-SS, with the quasilinear (QL) separatrix (i.e., the separatrix in the space of QL routes of ion acceleration) located in the region of passing particles is studied. The aim of ICRH-SS is to minimiz ...

2021

Rapid optimization of stationary tokamak plasmas in RAPTOR: demonstration for the ITER hybrid scenario with neural network surrogate transport model QLKNN

Olivier Sauter, Federico Alberto Alfredo Felici, Michele Marin, Simon Van Mulders

This work presents a fast and robust method for optimizing the stationary radial distribution of temperature, density and parallel current density in a tokamak plasma and its application to first-principle-based modeling of the ITER hybrid scenario. A new ...

2021

Design and foldability of Miura-based cylindrical origami structures

Thomas Keller, Yuntong Du

A methodology for designing cylindrical origami with different patterns and different cross-sectional shapes is presented. Planar and cylindrical origami with curved-crease patterns are designed and proved to be foldable and developable regardless of the t ...

ELSEVIER SCI LTD2021

Self-consistent Simulations of ICRH with the Background Equilibrium in Tokamaks and Stellarators

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Into the ice: Exploration and data capturing in glacial moulins by a tethered robot

An experimental and computational study of tokamak plasma turbulence

Conjugate heat transfer in isolated granular clusters with interstitial fluid using lattice Boltzmann method

A localized reduced basis approach for unfitted domain methods on parameterized geometries

Bounds on photon scattering

Physics and applications of three-ion ICRF scenarios for fusion research

Kalman filter density reconstruction in ICRH discharges on ASDEX Upgrade

Ion cyclotron resonance heating with shifted separatrix

Rapid optimization of stationary tokamak plasmas in RAPTOR: demonstration for the ITER hybrid scenario with neural network surrogate transport model QLKNN

Design and foldability of Miura-based cylindrical origami structures

An experimental and computational study of tokamak plasma turbulence

Conjugate heat transfer in isolated granular clusters with interstitial fluid using lattice Boltzmann method

Physics and applications of three-ion ICRF scenarios for fusion research

Into the ice: Exploration and data capturing in glacial moulins by a tethered robot

A localized reduced basis approach for unfitted domain methods on parameterized geometries

Rapid optimization of stationary tokamak plasmas in RAPTOR: demonstration for the ITER hybrid scenario with neural network surrogate transport model QLKNN

Kalman filter density reconstruction in ICRH discharges on ASDEX Upgrade

Design and foldability of Miura-based cylindrical origami structures

Ion cyclotron resonance heating with shifted separatrix

Bounds on photon scattering