Pulse Brain · Growing Health Evidence Index
Tier 3 — Observational / field trialPeer-reviewed

A new quench detection method for HTS magnets: stray-capacitance change monitoring

E. Ravaioli, Daniel Davis, M. Marchevsky, G. Sabbi, Tengming Shen, Arjan Verweij, Kai Zhang

Physica Scripta · 2019

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Summary

This paper presents a novel quench detection method for high-temperature superconductor magnets based on monitoring stray-capacitance between magnet structural elements. The technique exploits the change in relative permittivity of helium as it transitions from liquid to gaseous phase during heating events, causing measurable decreases in capacitance. Laboratory demonstrations on Bi-2212 magnets showed successful detection of thermal events, addressing a key limitation in superconducting magnet implementation.

UK applicability

This is a materials science and superconductivity research paper with no direct relevance to UK farming systems, soil health, nutrient density, or food-related human health outcomes. It should not be included in Vitagri's Pulse Brain, which focuses on food systems research.

Key measures

Stray-capacitance changes between electrically-insulated magnet elements; helium permittivity variation; quench propagation detection speed

Outcomes reported

The study demonstrated a novel stray-capacitance monitoring technique for detecting quenches in high-temperature superconductor magnets, successfully tested on three small-scale Bi-2212 magnets. Results showed detection of both thermal runaways and spot-heater induced quenches, with comparative assessment against conventional quench detection methods.

Theme
General food systems / other
Subject
Other / interdisciplinary
Study type
Research
Study design
Laboratory / experimental study
Source type
Peer-reviewed study
Status
Published
Geography
United States
System type
Other
DOI
10.1088/1402-4896/ab4570
Catalogue ID
SNmotmrlbu-dmgw3e

Topic tags

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