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title: 'Open-Source Software Suite for Compact High-Field Stellarator'
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authors:
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- name: Francesco CECCHERINI
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affiliations:
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- Renaissance Fusion Italia
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- name: Laura GALEOTTI
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affiliations:
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- Renaissance Fusion Italia
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- name: Céline HUE
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affiliations:
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- Renaissance Fusion
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license: CC-BY-4.0
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exports:
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- format: pdf
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template: ../../template
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site:
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hide_toc: false
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github: 'https://github.com/OSSFE/OSSFE_2026'
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---
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Magnetically confined nuclear fusion (MCF) is a highly multidimensional problem in both space and time. As such, modeling MCF through predictive numerical simulations has been representing one of the most challenging tasks for the numerical and high-performance computing (HPC) community for decades.
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Due to the complexity of both the physics involved and the technology of modern HPC
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infrastructures, relying on open-source software (OSS) represents a tremendous opportunity for development acceleration. Besides, it constitutes an impelling necessity to align the time scales of science understanding and industrial advancement.
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Renaissance Fusion (RF) is pursuing the design and deployment of a compact high-field stellarator with key novel features such as its liquid metal first wall and laser-engraved coils. The implementation of such an ambitious program requires the prompt availability of highly
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sophisticated and validated numerical codes to deploy a massive modelling program and carry out large multidimensional parameter investigations.
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Inspired by the pioneering vision of the Numerical Tokamak Project [1], which aimed to generate reliable predictions of machine performance through physics-based high-performance computing, RF put efforts to select a comprehensive suite of open-source software and combine them into a package that supports and accelerates RF’s high-field stellarator nuclear fusion project. We will discuss the present state of this initiative and the plans for its expansion.
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Moreover, we describe a reactor-relevant OSS study directed atthe identification of possible plasma heating scenarios in high-field stellarators. This investigation has been carried out through the BEAMS3D [2] code and has allowed us to address the role of the different fast ion loss and energy deposition channels as well as their dependence on beam energy and injection parameters.
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[1] The Numerical Tokamak Project (NTE), Simulation of Turbulent Transport in the Core Plasma: A Grand Challenge in Plasma Physics, LLNL Report, December 1993
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[2] M. McMillan and S. A. Lazerson, BEAMS3D Neutral Beam Injection Model, PPCF, 095019, 56, 2014
| ID_104 |[A Transformer Neural Operator Surrogate for Coupled Neutron-Photon Transport in Fusion Blanket Design](abstracts/ecran-a.md)| Zara Ecran | Zenithon AI |
| ID_033 |[FESTIM V&V efforts on advanced coupled problems](abstracts/yang-festim.md)| Huihua Yang | Massachusetts Institute of Technology |
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| ID_046 |[Integration of MARTe2 into the General Atomics Plasma Control System for Real-Time Simulink Model Execution and Parameterisation](abstracts/jones-integration.md)| Edward Jones | UKAEA |
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| ID_051 |[VANTAGE-Reactions - a library for treating reactive physics in performance-portable particle codes built with NESO-Particles](abstracts/mijin-vantage.md)| Stefan Mijin | UKAEA |
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| ID_055 |[An Integrated Dynamic Modeling Framework for the Tritium Cycle in Inertial Fusion Chamber Materials](abstracts/ialovega-an.md)| Mykola Ialovega | GenF |
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| ID_059 |[Optimisation of STEP Magnetic Configuration and In-vessel Components using the Bluemira Fusion Power Plant Framework](abstracts/graham-optimisation.md)| Georgina Graham | UKAEA |
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| ID_060 |[Automated Design and Optimisation of Stellarators Using Open Source Simulation Codes](abstracts/sharpe-automated.md)| Sophie Sharpe | nTtau Digital LTD |
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| ID_062 |[FreeGSNKE Pulse Design Tool: in-silico scenario design and control validation for tokamak plasmas](abstracts/pentland-freegsnke.md)| Kamran Pentland | UKAEA |
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| ID_065 |[RT-GSFit – Real-time Grad-Shafranov Fit](abstracts/prokopyszyn-rt.md)| Alex Prokopyszyn | Tokamak Energy Ltd. |
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| ID_077 |[Gysela-X++ - A new C++ Kokkos-based code for gyrokinetic plasma simulations](abstracts/grandgirard-gysela.md)| Virginie Grandgirard | CEA |
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| ID_086 |[A software library for robust ELM detection](abstracts/alhage-a.md)| Jerome Alhage | Ghent University |
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| ID_089 |[Implementing devops for the Fairmast dataservice](abstracts/brennand-implementing.md)| Daniel Brennand | UKAEA |
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| ID_098 |[Code-to-code Comparison of OpenMC and ORIGEN for Isotopic Depletion in Fusion](abstracts/quang-code.md)| Son Quang | University of Tennessee |
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| ID_100 |[Towards Automated Annotation of Tokamak Data Using a Human-In-The-Loop Tagging Platform](abstracts/field-towards.md)| Matthew Field | United Kingdom Atomic Energy Authority |
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| ID_101 |[XDG and the wider CAE ecosystem around OpenMC ](abstracts/butt-xdg.md)| Waqar Butt | UKAEA |
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| ID_105 |[PolyBTR code development for neutral beam design workflows](abstracts/dlougach-polybtr.md)| Eugenia Dlougach | Neutral Beam Research |
| ID_033 |[FESTIM V&V efforts on advanced coupled problems](abstracts/yang-festim.md)| Huihua Yang | Massachusetts Institute of Technology |
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| ID_045 |[Open-Source Software Suite for Compact High-Field Stellarator](abstracts/ceccherini-open.md)| Francesco Ceccherini | Renaissance Fusion Italia |
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| ID_046 |[Integration of MARTe2 into the General Atomics Plasma Control System for Real-Time Simulink Model Execution and Parameterisation](abstracts/jones-integration.md)| Edward Jones | UKAEA |
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| ID_051 |[VANTAGE-Reactions - a library for treating reactive physics in performance-portable particle codes built with NESO-Particles](abstracts/mijin-vantage.md)| Stefan Mijin | UKAEA |
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| ID_055 |[An Integrated Dynamic Modeling Framework for the Tritium Cycle in Inertial Fusion Chamber Materials](abstracts/ialovega-an.md)| Mykola Ialovega | GenF |
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| ID_059 |[Optimisation of STEP Magnetic Configuration and In-vessel Components using the Bluemira Fusion Power Plant Framework](abstracts/graham-optimisation.md)| Georgina Graham | UKAEA |
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| ID_060 |[Automated Design and Optimisation of Stellarators Using Open Source Simulation Codes](abstracts/sharpe-automated.md)| Sophie Sharpe | nTtau Digital LTD |
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| ID_062 |[FreeGSNKE Pulse Design Tool: in-silico scenario design and control validation for tokamak plasmas](abstracts/pentland-freegsnke.md)| Kamran Pentland | UKAEA |
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| ID_065 |[RT-GSFit – Real-time Grad-Shafranov Fit](abstracts/prokopyszyn-rt.md)| Alex Prokopyszyn | Tokamak Energy Ltd. |
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| ID_077 |[Gysela-X++ - A new C++ Kokkos-based code for gyrokinetic plasma simulations](abstracts/grandgirard-gysela.md)| Virginie Grandgirard | CEA |
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+
| ID_086 |[A software library for robust ELM detection](abstracts/alhage-a.md)| Jerome Alhage | Ghent University |
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+
| ID_089 |[Implementing devops for the Fairmast dataservice](abstracts/brennand-implementing.md)| Daniel Brennand | UKAEA |
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| ID_098 |[Code-to-code Comparison of OpenMC and ORIGEN for Isotopic Depletion in Fusion](abstracts/quang-code.md)| Son Quang | University of Tennessee |
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| ID_100 |[Towards Automated Annotation of Tokamak Data Using a Human-In-The-Loop Tagging Platform](abstracts/field-towards.md)| Matthew Field | United Kingdom Atomic Energy Authority |
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| ID_101 |[XDG and the wider CAE ecosystem around OpenMC ](abstracts/butt-xdg.md)| Waqar Butt | UKAEA |
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| ID_105 |[PolyBTR code development for neutral beam design workflows](abstracts/dlougach-polybtr.md)| Eugenia Dlougach | Neutral Beam Research |
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