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Authors = Maxim Marchevsky ORCID = 0000-0001-7283-9305

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18 pages, 2618 KiB  
Article
Quench Detection and Protection for High-Temperature Superconductor Accelerator Magnets
by Maxim Marchevsky
Instruments 2021, 5(3), 27; https://doi.org/10.3390/instruments5030027 - 5 Aug 2021
Cited by 57 | Viewed by 10312
Abstract
High-temperature superconductors (HTS) are being increasingly used for magnet applications. One of the known challenges of practical conductors made with high-temperature superconductor materials is a slow normal zone propagation velocity resulting from a large superconducting temperature margin in combination with a higher heat [...] Read more.
High-temperature superconductors (HTS) are being increasingly used for magnet applications. One of the known challenges of practical conductors made with high-temperature superconductor materials is a slow normal zone propagation velocity resulting from a large superconducting temperature margin in combination with a higher heat capacity compared to conventional low-temperature superconductors (LTS). As a result, traditional voltage-based quench detection schemes may be ineffective for detecting normal zone formation in superconducting accelerator magnet windings. A developing hot spot may reach high temperatures and destroy the conductor before a practically measurable resistive voltage is detected. The present paper discusses various approaches to mitigating this problem, specifically focusing on recently developed non-voltage techniques for quench detection. Full article
(This article belongs to the Special Issue Applied Superconductivity for Particle Accelerator)
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