Analysis of Temperature and Magnetic Field Distribution in Superconducting Bulk During Pulsed Field Magnetization

Author

Fujishiro, Hiroyuki ; Naito, Tomoyuki ; Furuta, Daiki

Author_Institution

Fac. of Eng., Iwate Univ., Morioka, Japan

Volume

21

Issue

3

fYear

2011

fDate

6/1/2011 12:00:00 AM

Firstpage

2723

Lastpage

2726

Abstract

We have constructed the framework of theoretical simulation for magnetic field and temperature in the superconducting bulk during pulsed field magnetization (PFM) using finite element method (FEM). Three successive pulsed field applications with identical strength (SPA) were performed to the cryo-cooled bulk and time and spatial dependence of local field Bz(t,(z,r) and temperature T(t,(z,r) were calculated. The trapped field Bz increased and the maximum temperature rise Tmax decreased with increasing pulse number. The Bz enhancement results from the decrease in temperature rise because of the already trapped flux. The results of the simulation well reproduced the experimental ones qualitatively.

Keywords

cooling; cryogenics; finite element analysis; magnetisation; cryocooled bulk; finite element method; local field; magnetic field distribution; maximum temperature rise; pulse number; pulsed field magnetization; spatial dependence; successive pulsed field applications; superconducting bulk; temperature distribution; time dependence; trapped field; trapped flux; Magnetic flux; Magnetization; Mathematical model; Saturation magnetization; Superconducting magnets; Temperature dependence; Temperature distribution; Pulsed field magnetization; simulation; superconducting bulk;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2010.2089419

Filename

5643945