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High Current Measurement of Commercial REBCO Tapes in Liquid Helium: Experimental Challenges and Solutions

Authors :
Andrea Masi
Rosa Freda
Andrea Formichetti
Alberto Greco
Andrea Alimenti
Masood Rauf Khan
Giuseppe Celentano
Source :
Applied Sciences, Vol 14, Iss 17, p 7697 (2024)
Publication Year :
2024
Publisher :
MDPI AG, 2024.

Abstract

Recent advances in high-temperature superconductors (HTS) have made them extremely attractive for low-temperature, high-magnetic-field-power applications such as in fusion technology, where the advantages over traditional low-temperature superconductors (LTS) allow for the design of fusion reactors operating in different and more convenient regimes. However, the performance enhancement exhibited by novel conductors poses several challenges for the measurement of their superconducting properties. The high critical currents coupled with the relatively low thermal stability of the conductors and their mechanical fragility render this task a challenge, as the angular anisotropies complicate the experimental setup. In this work, we describe the development of our novel high-current measurement facility, focusing on the solutions introduced regarding critical aspects such as the superconducting leads and the sample holder design. We show how simple but effectively designed solutions can be adopted to combat the complexity of the measurement. The results reported in this work guide the development of a measurement system able to withstand high critical currents (I > 1500 A) at high magnetic fields (µ0H > 12 T) by evaluating the angular response of 4 mm wide short samples (L ~ 7.5 cm) in a robust and reproducible manner.

Details

Language :
English
ISSN :
20763417
Volume :
14
Issue :
17
Database :
Directory of Open Access Journals
Journal :
Applied Sciences
Publication Type :
Academic Journal
Accession number :
edsdoj.938ada98446e48a46d960edc88c63
Document Type :
article
Full Text :
https://doi.org/10.3390/app14177697