Summary
This paper presents a novel methodology for assessing the magnetothermal stability of Nb₃Sn superconducting wires using ultraviolet pulsed laser-induced quenching, which deposits energy on nanosecond timescales—faster than thermal diffusion in the sample. Measurements were conducted on internal tin and powder-in-tube Nb₃Sn designs specified for the MQXF quadrupole magnets of the High Luminosity Large Hadron Collider upgrade across magnetic fields of 5–15 T and cryogenic temperatures. The findings indicate that the superconductors can maintain stability at their intended operating points with a considerable margin, supporting their suitability for next-generation high-field magnet systems.
UK applicability
This is fundamental physics research with no direct relevance to UK farming systems, soil health, nutrient density, or agricultural practice. It is outside the scope of Vitagri's Pulse Brain database.
Key measures
Minimum Quench Energy (MQE), critical current density (Jc), applied magnetic field strength (5–15 T), temperature (1.9 K and 4.2 K), energy absorption calibration
Outcomes reported
The study measured the Minimum Quench Energy (MQE) of Nb₃Sn superconducting wires using ultraviolet pulsed laser techniques across magnetic fields of 5–15 T and temperatures of 1.9 K and 4.2 K. Results demonstrated that superconductors specified for the MQXF magnets of the High Luminosity Large Hadron Collider upgrade cannot be quenched at their operating point with a substantial safety margin.
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