Our new journal paper in Nuclear Fusion on modeling of frequency-sweeping Alfvén modes

Alfvénic instabilities driven by energetic particles pose a challenge to the efficient operation of magnetic confinement fusion devices. These modes can dispel fast ions leading to the introduction of significant heat loads onto plasma facing components and degradation of overall plasma confinement. One class of Alfvénic instabilities known as reversed shear Alfvén eigenmodes (RSAEs) are of particular risk in devices with reversed shear rotational transform profiles. Reversed shear configurations have recently been of interest because of their enhancement to confinement quality. With this in mind, further study of RSAEs is necessary.

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JOREK code meeting at EPFL with a visit to Swiss Plasma Center

Group picture of in-person attendees at the EPFL site

From 12/02/2024 to 16/02/2024, the 2024 JOREK code meeting was held at EPFL in Lausanne, Switzerland, organized with the support of Cristian Sommariva and Mengdi Kong from the Swiss Plasma Center (SPC), adopting a hybrid format. The meeting was greatly appreciated by the large community of code users and developers, with over 60 registered people, of which 30 were in-person.

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Two new Master students have joined our group

The year 2024 has started with the opportunity for two new Master students to carry out their MSc thesis research projects in our Fusion group. Their internships will last between six and eight months during which they will be able to have a first-hand experience with one of the most powerful supercomputers worldwide, the MareNostrum 5, in a hot timely topic such as nuclear fusion.

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AORSA 3D: new insight on ICRH in stellarators

Representation of last closed magnetic flux surfaces in a stellarator.

The tridimensional All-ORder Spectral Algorithm (AORSA-3D) has been adapted to run on the supercomputer MareNostrum, at the Barcelona Supercomputing Center – Centro Nacional de Supercomputación (BSC-CNS). AORSA-3D is designed to study the plasma-wave interaction inside the 3D volume of a stellarator. Its model provides fully three-dimensional solutions of the integral wave equation for Ion Cyclotron Resonance Heating (ICRH) in three-dimensional stellarator plasmas. Its algorithm is based on combining multiple periodic solutions for individual helical field periods in order to obtain complete 3-D wave solutions valid over the entire volume of the stellarator for an arbitrary antenna geometry.

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4th Fusion HPC Workshop

On 29 and 30 November 2023, the Fusion Group at Barcelona Supercomputing Center (BSC) actively participated in the yearly workshop regarding research in HPC for Fusion, which has now arrived at its 4th edition.

The Workshop is meant to be a gathering appointment for experts in HPC in the research field of Nuclear Fusion. The covered topics were related to the different ways in which HPC methods and algorithms, spanning across Monte-Carlo methods, Neural Networks, and Parallelization Exploitation, can be extremely valuable for applications, going from the simulation of MHD instabilities to System Analysis, to reach efficient ways of energy production through Nuclear Fusion.

A total of 31 talks have been organized in 11 Zoom Sessions, giving life to an exhaustive program covering all the relevant topics. The 5 keynote talks, of great inspiration for the audience, were:

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We are looking for engineers interested in high-performance computing sciences

Our task is to help generate efficient simulations in HPC environments

We are looking for Research Engineers in Scientific Computing to join the growing team of the EUROfusion Advanced Computing Hub at Barcelona Supercomputing Center (BSC)

The successful candidates will participate in cutting-edge European R&D activities related to the optimization and programming of codes devoted to simulation-based plasma physics science and fusion technology.  They will become members of this reference performance group in an international working environment.

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