Explanipedia

DC and quench performance assessment from the EUROfusion HTS Quench Experiment campaign and projection to magnet operation Open

Andrea Zappatore, H. Bajas, Nikolay Bykovskiy, P. Bruzzone, G. Celentano , et al. · 2025

Conceptual Design of the EDIPO 2 Magnet Open

Xabier Sarasola, P. Bruzzone, Nikolay Bykovskiy, Jack R. Greenwood, Kamil Sedlák · 2025

The SULTAN test facility has been pivotal in qualifying forced-flow conductors in the last three decades. However, the rising demand for conductors for high-field magnets calls for a test facility able to provide a background magnetic fiel…

Numerical analysis of non-insulated DEMO TF coils Open

M. Ortino, Nikolay Bykovskiy, Xabier Sarasola, P. Bruzzone, Kamil Sedlák · 2024

The design of small solenoids without/with-partial insulation among turns or layers has been proven to grant higher thermal stability than for standard insulated cases. This technology implies higher safety standards, by allowing for 1-100…

Validation and Application of Hysteresis Loss Model for HTS Stacks and Conductors for Fusion Applications Open

Andrea Zappatore, Nikolay Bykovskiy, G. De Marzi · 2024

Numerous conductor designs for pulsed magnets based on High Temperature Superconductors (HTS), featuring stacks of tapes are currently being proposed. A major contribution to the AC losses is expected to be given by hysteresis losses. Seve…

Experimental study of stability, quench propagation and detection methods on 15 kA sub-scale HTS fusion conductors in SULTAN Open

Nikolay Bykovskiy, H. Bajas, Ortensia Dicuonzo, P. Bruzzone, Kamil Sedlák · 2023

High-temperature superconductors (HTSs) enable exclusive operating conditions for fusion magnets, boosting their performance up to 20 T generated magnetic fields in the temperature range from 4 K to 20 K. One of the main technological issu…

Thermal-hydraulic analysis of alternative cable-in-conduit conductors for the European DEMO hybrid central solenoid Open

Roberto Guarino, Monika Lewandowska, Aleksandra Dembkowska, Nikolay Bykovskiy, Xabier Sarasola , et al. · 2022

A hybrid design of the Central Solenoid is under study within the conceptual design phase of the European DEMO fusion reactor. It is based on HTS conductors in the innermost high-field layers, and Nb3Sn and NbTi conductors for field values…

Diffusion-Bonding Between Strands and Modeling of Splices of Nb<sub>3</sub>Sn Rutherford Cables Open

Vincenzo D’Auria, Nikolay Bykovskiy, P. Bruzzone, Kamil Sedlák · 2022

Particle accelerators foresee the use of Nb₃Sn in the next generation of dipole magnets. A common design strategy is to grade the coil, i.e., to optimize the quantity of superconductor in the turns with respect to the magnetic f…

Co-Wound Superconducting Wire for Quench Detection in Fusion Magnets Open

Nikolay Bykovskiy, D. Uglietti, P. Bruzzone, Kamil Sedlák · 2022

High temperature superconducting (HTS) materials are widely utilized in various design proposals for fusion magnets, resulting in enhanced performance of the machines compared to the past. However, a reliable quench detection in HTS conduc…

Superconductors for fusion: a roadmap Open

N. Mitchell, Jinxing Zheng, C. Vorpahl, V. Corato, Charlie Sanabria , et al. · 2021

With the first tokamak designed for full nuclear operation now well into final assembly (ITER), and a major new research tokamak starting commissioning (JT60SA), nuclear fusion is becoming a mainstream potential energy source for the futur…

Conceptual design of BabyIAXO, the intermediate stage towards the International Axion Observatory Open

A. Abeln, K. Altenmüller, S. Arguedas Cuendis, E. Armengaud, D. Attié , et al. · 2021

Axion search with BabyIAXO in view of IAXO Open

J. Galán, A. Abeln, K. Altenmüller, S. Arguedas Cuendis, E. Armengaud , et al. · 2021

Axions are a natural consequence of the Peccei-Quinn mechanism, the most compelling solution to the strong-CP problem. Similar axion-like particles (ALPs) also appear in a number of possible extensions of the Standard Model, notably in str…

Physics potential of the International Axion Observatory (IAXO) Open

E. Armengaud, D. Attié, Stefano Basso, P. Brun, Nikolay Bykovskiy , et al. · 2020

We review the physics potential of a next generation search for solar axions: the International Axion Observatory (IAXO). Endowed with a sensitivity to discover axion-like particles (ALPs) with a coupling to photons as small as gaγ ∼ 10−12…

Demonstration of engineering current density exceeding 1 kA mm<sup>−2</sup> in ultra-thin no-insulation, soldered coil windings using NbTi/Cu wires with CuNi cladding Open

Nikolay Bykovskiy, Stan Kaal, A. Dudarev, M. Mentink, Herman H.J. ten Kate · 2020

The no-insulation, or more precisely, controlled-resistance coil winding method, nowadays being exclusively used for high-temperature superconducting solenoids, has proven its effectiveness for improving quench protection. When considering…

Quench protection of the BabyIAXO magnet Open

Nikolay Bykovskiy, A. Dudarev, H. Silva, Herman H.J. ten Kate · 2020

BabyIAXO, a 20 m-long twin-bore helioscope aiming for search of axion like particles, is currently in the engineering design phase and its construction is to be completed within the next 4 years. In addition to X-ray detectors and focusing…

Thermal analysis and cryogenics of the Baby-IAXO magnet Open

H F P Silva, A. Dudarev, Nikolay Bykovskiy, Patricia Borges de Sousa, Herman H.J. ten Kate · 2020

Baby-IAXO is a new helioscope, a demonstration version of the proposed full-size IAXO, the International Axions Observatory. It is currently under design and once installed it will search via the Primakoff effect for axions or axion-like p…

Conceptual Design of BabyIAXO, the intermediate stage towards the International Axion Observatory Open

A. Abeln, K. Altenmüller, S. Arguedas Cuendis, E. Armengaud, D. Attié , et al. · 2020

This article describes BabyIAXO, an intermediate experimental stage of the International Axion Observatory (IAXO), proposed to be sited at DESY. IAXO is a large-scale axion helioscope that will look for axions and axion-like particles (ALP…

Next Generation Search for Axion and ALP Dark Matter with the International Axion Observatory Open

J. Ruz, Julia K. Vogel, E. Armengaud, D. Attié, Stefano Basso , et al. · 2018

More than 80 years after the postulation of dark matter, its nature remains one of the fundamental questions in cosmology. Axions are currently one of the leading candidates for the hypothetical, non-baryonic dark matter that is expected t…

HTS high current cable for fusion application Open

Nikolay Bykovskiy · 2017

State-of-the-art magnets of fusion devices, which are based on low temperature superconductors (LTS), have almost reached their technological limits in terms of generated magnetic fields. Further progress can be made using novel high tempe…

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