Title :
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
fDate :
6/1/2011 12:00:00 AM
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;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2010.2089419
