Heat propagation analysis in HTSC bulks during pulse field magnetization

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

研究成果: Article

8 被引用数 (Scopus)

抄録

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 ΔTmax 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.

本文言語English
ページ(範囲)S540-S544
ジャーナルSuperconductor Science and Technology
19
7
DOI
出版ステータスPublished - 2006 7 1
外部発表はい

ASJC Scopus subject areas

  • Ceramics and Composites
  • Condensed Matter Physics
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

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