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Electromechanical investigations and quench experiments on sub-size HTS cables for high field EU-DEMO Central Solenoid

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

Pierluigi Bruzzone, Kamil Sedlák, Federica Demattè

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-d might be the r ...

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2022

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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 feasibility and perfor ...

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2021

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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 monitoring and caus ...

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2021

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Superconducting fault current limiters (SFCLs) can be used to limit fault currents in both meshed DC and AC grids by transitioning from superconducting to resistive state, in the presence of high currents. While the device is theoretically a great way to p ...

2021

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A good knowledge of material properties is a critical aspect for modeling high-temperature superconductor (HTS) devices. However, the electrical resistivity of coated conductors above the critical current is limited. The major challenge in characterizing t ...

2021

High-Temperature Superconductors (HTS) can be superconducting in liquid nitrogen 77 K, holding immense promises for our future. They can enable disruptive technologies such as nuclear fusion, lossless power transmission, cancer treatment devices, and techn ...

EPFL2021

Design of the First HTS Single-Coil Demonstrator of GaToroid Toroidal Gantry for Hadron Therapy

Luca Bottura, Enrico Felcini, Jérôme Harray, Bertrand Dutoit

The design and construction of compact and lightweight gantries for hadron therapy are essential steps toward wider accessibility to this cancer treatment. The use of a high-field steady-state toroidal gantry, i.e., GaToroid, represents an attractive alter ...

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2021

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

Pierluigi Bruzzone, Kamil Sedlák

The impact of electromagnetic (EM) and thermal cyclic loading (referred as warm-up-cool-down-WUCD) on the Nb3Sn cable in conduit conductors for the toroidal field magnets of the ITER tokamak should be carefully assessed for the proper operation of the mach ...

IOP PUBLISHING LTD2021

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Direct current tests performed in the past on the conductor samples of the toroidal field (TF) ITER coils revealed degradation of current sharing temperature, T-cs. The degradation progresses with repetitive electromagnetic loading, and also with thermal c ...

IOP PUBLISHING LTD2021

A cryogenic electro-optic interconnect for superconducting devices

Tobias Kippenberg, Amir Youssefi, Anton Lukashchuk, Nathan Rafaël Bernier, Liu Qiu, Itay Shomroni

A major challenge to the scalability of cryogenic computing platforms is the heat load associated with the growing number of electrical cable connections between the superconducting circuitry and the room-temperature environment. Compared with electrical c ...

2021