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…

Bending Tolerance of React&Wind Nb3Sn Conductors for Fusion Magnets Open

P. Bruzzone, Hugues Bajas, C. Frittitta, F. Demattè, Kamil Sedlák , et al. · 2024

The react-and-wind technique for manufacturing of large Nb3Sn fusion magnets (RW) is very attractive because of the superior performance of the Nb3Sn with lower thermal strain compared to the wind-and-react technique. The procedure for mag…

Performance Comparison of Cables With Partial Transposition Open

C. Frittitta, P. Bruzzone, Hugues Bajas, F. Demattè, Kamil Sedlák · 2024

The need of full transposition of the current carrying elements (strands) in large cables is frequently retained as top design criterion for conductors operating in pulsed mode. However, when the transposition error, i.e., the inductance d…

Performance test of REBCO CICC sub-cables with l0 kA current under 20 T background field Open

P. Bruzzone · 2024

SPC

Studies on EU-DEMO 3D coils requirements and conceptual design for error field correction and plasma control Open

F. Maviglia, L. Pigatto, F. Villone, H. Zohm, Christopher G. Albert , et al. · 2023

Quench experiments on sub-size HTS Cable-In-Conduit Conductors for fusion applications: Data analysis and model validation Open

Andrea Zappatore, R. Bonifetto, P. Bruzzone, V. Corato, Ortensia Dicuonzo , et al. · 2023

The recent experimental campaign, carried out in the upgraded SULTAN facility and supported by EUROfusion, investigated quench propagation in high field, sub-size HTS Cable-In-Conduit Conductors. The available experimental data consist of …

Parametric Studies of the EU DEMO Central Solenoid Open

Xabier Sarasola, P. Bruzzone, Kamil Sedlák, V. Corato, Lorenzo Giannini , et al. · 2023

The Central Solenoid (CS) is at the core of the EU DEMO tokamak, and has a strong impact on the tokamak design and the overall machine size. By ramping its current, the CS generates a change of magnetic flux, which initiates the plasma, an…

Progress in the design and manufacturing of the EDIPO 2 cryostat Open

Roberto Guarino, E. Solodko, Xabier Sarasola, P. Bruzzone, Kamil Sedlák · 2023

Manufacture and performance test result of a 95 kA-class Nb-Ti cable-in-conduit conductor for the low field winding-package of CFETR-TF coil Open

Chao Dai, Yu Wu, Kamil Sedlák, H. Bajas, Arend Nijhuis , et al. · 2023

AC loss and electrical resistance of the RW3 diffusion-bonded joint Open

Vincenzo D’Auria, H. Bajas, P. Bruzzone, Kamil Sedlák · 2023

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…

Preliminary design of the pressure relief system of the EDIPO 2 helium vessel Open

Roberto Guarino, Xabier Sarasola, E. Solodko, P. Bruzzone, Kamil Sedlák · 2022

Preliminary Design of a High Current R&W TF Coil Conductor for the EU DEMO Open

F. Demattè, P. Bruzzone, Xabier Sarasola, Kamil Sedlák, V. Corato · 2022

Paschen failures in ITER, W7-X and JT60 superconducting coils at the acceptance tests have shown that it is highly desirable to lower the coil discharge voltage (U-d) of the DEMO Toroidal Field (TF) coils. Another benefit of lowering the U…

Progress on the Design of the 15 T Magnet of the EDIPO Test Facility Open

Xabier Sarasola, P. Bruzzone, Roberto Guarino, Kamil Sedlák, E. Solodko · 2022

EDIPO 2 (the upgraded EDIPO test facility) will provide a unique testbed for superconducting cables for fusion magnets, accelerators, and other applications. Compared to the previous magnet assembly, the magnetic field is enhanced from 12.…

Measurements of AC Loss Evolution in ITER TF Conductors Open

Kamil Sedlák, P. Bruzzone, N. Mitchell, V. Tronza · 2022

AC loss in the Nb3Sn cable-in-conduit conductors (CICC) usually decreases after the conductor undergoes electromagnetic cycling. This can be attributed to the increase of inter-strand resistance due to the detachment of the strand-bonding …

Diffusion-Bonding Between Strands and Modeling of Splices of Nb3Sn 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…

The DEMO magnet system – Status and future challenges Open

V. Corato, C. Vorpahl, Kamil Sedlák, V A Anvar, J. Bennet , et al. · 2021

Application of Copper Thermal Spraying for Electrical Joints between Superconducting Nb3Sn Cables Open

Vincenzo D’Auria, P. Bruzzone, M. S. Meyer, Enrique Rodriguez Castro, S. Sgobba · 2021

This manuscript reports on the application of copper thermal spraying in the manufacturing process of an electrical connection between Nb3Sn cables for superconducting magnets of fusion reactors. The joint is realized through diffusion bon…

Impact of mechanical and thermal cycles at different operating conditions on the ITER toroidal field coil conductor performance Open

Marco Breschi, Lorenzo Cavallucci, V. Tronza, N. Mitchell, P. Bruzzone , et al. · 2021

The impact of electromagnetic (EM) and thermal cyclic loading (referred as warm-up-cool-down—WUCD) on the Nb 3 Sn cable in conduit conductors for the toroidal field magnets of the ITER tokamak should be carefully assessed for the proper op…

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…

A design proposal for the European DEMO superconducting bus bars and current leads Open

Roberto Guarino, R. Wesche, Xabier Sarasola, Kamil Sedlák, P. Bruzzone · 2021

A New Cabled Stabilizer for the Nb3Sn React&Wind DEMO Conductor Prototype Open

P. Bruzzone, Kamil Sedlák, B. Stepanov, M Kumar, Vincenzo D’Auria · 2021

A Nb3Sn based, React&Wind flat cable, named RW2, was developed in the past three years at the Swiss Plasma Center in the scope of the EUROfusion conceptual studies for DEMO. The test results presented earlier proved an excellent DC perform…

Upgrade and Commissioning of the SULTAN Facility to Host Quench Experiments on HTS High Current Conductors Open

Ortensia Dicuonzo, Rui Kang, Kamil Sedlák, B. Stepanov, D. Uglietti , et al. · 2021

High Temperature Superconductors (HTS) are promising materials for future fusion magnets. One of HTS conductors' main issues is the quench protection: the quench develops much slower than in LTS, delaying the quench detection by voltage mo…

Design and Characterization of the Interlayer Joint Between Low-Field Nb3Sn Conductors of a Layer Wound DEMO TF Coil Open

L. Muzzi, L. Affinito, S. Chiarelli, V. Corato, A. della Corte , et al. · 2021

In the frame of the conceptual design studies for the Toroidal Field (TF) coils of DEMO, a solution based on a layer-wound magnet, rectangular-shaped Cable-in-Conduit conductors and W&R manufacturing approach, is being developed. The feasi…

Progress on the Upgrade of EDIPO, a 15 T Large Aperture Dipole Open

Douglas Martins Araujo, A. Ballarino, B. Bordini, L. Bottura, Simon C. Hopkins , et al. · 2021

The upgraded magnet assembly of the EDIPO test facility aims at generating 15 T at 4.2 K and 85% of short sample limit in a large rectangular aperture and over a uniform field length of 1000 mm. During 2020 the design studies have concentr…

Alternative PF Coil Winding Pack Design for the EU DEMO Open

M Kumar, Roberto Guarino, Kamil Sedlák, Xabier Sarasola, P. Bruzzone · 2021

The EUROfusion DEMO machine is at its pre-conceptual stage. The design of the magnet system for this machine is being developed in collaboration with several European research centers. The Poloidal Field (PF) coils proposed by the Swiss Pl…

Progress on Tests on Splices Between Nb3Sn Rutherford Cables for Graded High-Field Accelerator Magnets Open

Vincenzo D’Auria, M Kumar, Xabier Sarasola, P. Bruzzone · 2021

Future high-field accelerator magnets foresee the extensive use of Nb₃Sn, more expensive than the Nb-Ti of LHC. For projects involving the series production of magnets, conductor grading is mandatory in order to reduce the cost.…

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