Magnesium-Diboride-Based Prototype ELM Coil Fabrication, DC Characterization, and AC Transport-Current-Induced Loss Estimation: A Feasibility Study

Author

Kundu, Ananya ; Pradhan, Subrata ; Panchal, Arun ; Bano, Anees ; Raj, Piyush ; Das, Subrat Kumar ; Kumar, Nitish

Author_Institution

Magn. Technol. Dev. Div., Inst. for Plasma Res., Gandhinagar, India

Volume

25

Issue

4

fYear

2015

fDate

Aug. 2015

Firstpage

1

Lastpage

7

Abstract

In this paper, a trial on fabrication and characterization of the prototype edge-localized-mode coil employing MgB₂ strands has been attempted. The magnetic flux profile of the coil in dc current for a typical transport current is generated using finite-element modeling software. The coil is wound, heat treated, impregnated, and characterized subsequently in dc condition, as well as in ac condition, for a nominal range of frequency. The ac transport-current-induced loss was estimated and measured in terms of temperature rise. The measured temperature rises are found to be comparable with the calculated temperature rise.

Keywords

electrical conductivity; finite element analysis; heat treatment; magnesium compounds; magnetic flux; superconducting coils; type II superconductors; AC transport-current-induced loss estimation; DC characterization; MgB₂; dc current; finite-element modeling software; heat treatment; magnesium-diboride-based prototype ELM coil fabrication; magnetic flux profile; prototype edge-localized-mode coil; Current measurement; Magnetic confinement; Magnetic hysteresis; Superconducting magnets; Temperature measurement; Temperature sensors; Windings; ELM coil; Edge localized mode (ELM) coil; Heat treatment; MgB2; Transport current induced loss; heat treatment; transport-current-induced loss;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2015.2439238

Filename

7115069