Benchmarking sparse system identification with low-dimensional chaos

AA Kaptanoglu, L Zhang, ZG Nicolaou, U Fasel… - Nonlinear …, 2023 - Springer
Sparse system identification is the data-driven process of obtaining parsimonious differential
equations that describe the evolution of a dynamical system, balancing model complexity …

Design and construction of the MUSE permanent magnet stellarator

TM Qian, X Chu, C Pagano, D Patch… - Journal of Plasma …, 2023 - cambridge.org
This paper documents the design and construction of MUSE, the world's first permanent
magnet (PM) stellarator and the first quasi-axisymmetric experiment. The purpose of MUSE …

Machine learning for advancing low-temperature plasma modeling and simulation

J Trieschmann, L Vialetto… - Journal of Micro …, 2023 - spiedigitallibrary.org
Machine learning has had an enormous impact in many scientific disciplines. It has also
attracted significant interest in the field of low-temperature plasma (LTP) modeling and …

Greedy permanent magnet optimization

AA Kaptanoglu, R Conlin, M Landreman - Nuclear Fusion, 2023 - iopscience.iop.org
A number of scientific fields rely on placing permanent magnets in order to produce a
desired magnetic field. We have shown in recent work that the placement process can be …

Topology optimization for inverse magnetostatics as sparse regression: Application to electromagnetic coils for stellarators

AA Kaptanoglu, GP Langlois, M Landreman - Computer Methods in …, 2024 - Elsevier
Topology optimization, a technique to determine where material should be placed within a
predefined volume in order to minimize a physical objective, is used across a wide range of …

Improved stellarator permanent magnet designs through combined discrete and continuous optimizations

KC Hammond, AA Kaptanoglu - Computer Physics Communications, 2024 - Elsevier
A common optimization problem in the areas of magnetized plasmas and fusion energy is
the design of magnets to produce a given three-dimensional magnetic field distribution to …

A framework for discrete optimization of stellarator coils

KC Hammond - arxiv preprint arxiv:2412.00267, 2024 - arxiv.org
Designing magnets for three-dimensional plasma confinement is a key task for advancing
the stellarator as a fusion reactor concept. Stellarator magnets must produce an accurate …

Single stage optimization for permanent magnet stellarators

G Yu, K Liu, T Qian, Y **e, X Nie, C Zhu - arxiv preprint arxiv:2401.14041, 2024 - arxiv.org
Advanced stellarators are typically optimized in two stages. The plasma equilibrium is
optimized first, followed by the design of coils/permanent magnets. However, the …

Optimization of moderator materials by NSGA II based on macroscopic cross-sections: applications in accelerator neutron sources

Y Ge, Y Zhong, N Yuan, Y Sun, Z Yang… - Journal of …, 2023 - iopscience.iop.org
In recent years, genetic algorithms have been applied in nuclear technology design, which
have been shown to produce optimized results more efficiently than traditional enumeration …

A novel unsupervised machine learning algorithm for automatic Alfvénic activity detection in the TJ-II stellarator

D Zarzoso, SD Pinches, A Bustos, A Cappa… - Nuclear …, 2024 - iopscience.iop.org
A novel sparse encoding algorithm is developed to detect and study plasma instabilities
automatically. This algorithm, called Elastic Random Mode Decomposition, is applied to the …