Heat propagation analysis in HTSC bulks during pulse field magnetization

Hiroyuki Fujishiro, Shusuke Kawaguchi, Masahiko Kaneyama, Atsushi Fujiwara, Tatsuya Tateiwa, Tetsuo Oka

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The time evolutions of the three-dimensional temperature profiles in a superconducting bulk disc have been calculated after applying a pulse field in the pulse field magnetization (PFM) by use of a finite element method (FEM). The total generated heat Q, experimentally estimated using the maximum temperature rise ΔT max and specific heat C of the bulk, used in the analysis and the distribution of Q in the periphery region of the bulk, is suitably supposed in order that the calculated time evolutions of temperatures T(t) reproduce the measured ones on the bulk surface. From the analysis, the heat generation during PFM takes place under adiabatic conditions because the total Q value is about one or two orders of magnitude larger than the cooling power of the cryocooler used. The enhancement of the total heat capacity by setting a stainless steel ring onto the bulk as a heat reservoir is one of the effective methods to reduce the temperature rise and to enhance the trapped field.

Original languageEnglish
JournalSuperconductor Science and Technology
Volume19
Issue number7
DOIs
Publication statusPublished - 2006 Jul 1
Externally publishedYes

Fingerprint

high temperature superconductors
Magnetization
heat
magnetization
propagation
pulses
specific heat
Specific heat
adiabatic conditions
heat generation
temperature profiles
Temperature
temperature
stainless steels
Stainless Steel
Heat generation
finite element method
cooling
Enthalpy
Stainless steel

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Heat propagation analysis in HTSC bulks during pulse field magnetization. / Fujishiro, Hiroyuki; Kawaguchi, Shusuke; Kaneyama, Masahiko; Fujiwara, Atsushi; Tateiwa, Tatsuya; Oka, Tetsuo.

In: Superconductor Science and Technology, Vol. 19, No. 7, 01.07.2006.

Research output: Contribution to journalArticle

Fujishiro, Hiroyuki ; Kawaguchi, Shusuke ; Kaneyama, Masahiko ; Fujiwara, Atsushi ; Tateiwa, Tatsuya ; Oka, Tetsuo. / Heat propagation analysis in HTSC bulks during pulse field magnetization. In: Superconductor Science and Technology. 2006 ; Vol. 19, No. 7.
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