Experimental and numerical analysis of quench propagation on MgB 2 tapes and pancake coils

Pelegrín,J. (Universidad de Zaragoza) ; Romano,G. ; Martínez,E. (Universidad de Zaragoza) ; Angurel,L. A. (Universidad de Zaragoza) ; Navarro,R. (Universidad de Zaragoza) ; Ferdeghini,C. ; Brisigotti,S. ; Grasso,G. ; Nardelli,D.

Resumen: In the design and feasibility of electric power applications with MgB2 conductors, thermal conductivity plays an important role. In composite wires and tapes it is mainly determined by the amount of stabilizer (usually copper), while for coils the electric insulation and epoxy binder characteristics are added. In this paper we present results on quench development and propagation on isolated superconducting tapes and small single pancake coils cooled by thermal conduction, for three types of MgB2 tape with different stabilizations. The quench parameters at different temperatures, such as minimum quench energy (MQE), minimum propagation zone (MPZ) and quench propagation velocity (vp), are reported. A complete electrical and thermal characterization of the superconducting tapes and of non-superconducting materials used in the coil manufacture has been made. With these data, numerical computational models using finite element simulations have been performed for isolated wires and single pancake coils, and the results of the relevant quench parameters have been compared with the measured values.

Idioma: Inglés

DOI: 10.1088/0953-2048/26/4/045002

Año: 2013

Publicado en: Superconductor Science and Technology 26, 4 (2013), 045002 [12 pp.]
ISSN: 0953-2048

Factor impacto JCR: 2.796 (2013)

Categ. JCR: PHYSICS, APPLIED rank: 27 / 135 = 0.2 (2013) - Q1 - T1
Categ. JCR: PHYSICS, CONDENSED MATTER rank: 17 / 67 = 0.254 (2013) - Q2 - T1

Financiación: info:eu-repo/grantAgreement/ES/DGA/T12
Financiación: info:eu-repo/grantAgreement/ES/MINECO/MAT2011-22719

Tipo y forma: Article (PostPrint)

Área (Departamento): Área Cienc.Mater. Ingen.Metal. (Dpto. Ciencia Tecnol.Mater.Fl.)