Effective resistance of the HTS floating coil of the Mini-RT project

Nagato Yanagi, Toshiyuki Mito, Tsutomu Hemmi, Kazutaka Seo, Junji Morikawa, Yuichi Ogawa, Masataka Iwakuma

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

A magnetically levitated superconducting coil device, Mini-RT, has been constructed using high temperature superconductors for the purpose of examining a new magnetic confinement scheme of high-beta plasmas. The floating coil is wound with Bi-2223/Ag tapes, and it is operated in the temperature range of 20-40 K. The excitation tests of the coil were carried out and persistent current was sustained for magnetic levitation. The decay time constant of the persistent current was measured and the effective resistance of the coil cables was evaluated. The obtained resistance shows a considerable increase than that predicted by the n-value model. This might be caused by some electromagnetic effects such as the loss generation with long-lived shielding currents. This consideration was examined by measuring the magnetization of an HTS sample coil.

Original languageEnglish
Pages (from-to)1399-1402
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Volume15
Issue number2 PART II
DOIs
Publication statusPublished - Jun 2005

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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