Engineering research and development of magnetically levitated high-temperature superconducting coil system for mini-RT project

Author

Yanagi, Nagato ; Morikawa, Junji ; Mito, Toshiyuki ; Ogawa, Yuichi ; Hamaguchi, Shinji ; Chikaraishi, Hirotaka ; Iwakuma, Masataka ; Uede, Toshio ; Itoh, Ikuo ; Nose, Shinichi ; Fukui, Shigeo

Author_Institution

Nat. Inst. for Fusion Sci., Gifu, Japan

Volume

12

Issue

1

fYear

2002

fDate

3/1/2002 12:00:00 AM

Firstpage

948

Lastpage

951

Abstract

A magnetically levitated superconducting coil system is being developed using high temperature superconductors for examining a new magnetic confinement of high-beta plasmas. A miniature double-pancake coil was fabricated with a Bi-2223 Ag-sheathed tape for the purpose of developing a floating control using laser displacement gauges. The coil was inductively excited with liquid nitrogen cooling and successfully levitated in the air. A persistent current switch is also being developed with a Bi-2223 Ag-0.3wt%Mn-sheathed tape, and a prototype model was successfully tested.

Keywords

bismuth compounds; calcium compounds; high-temperature superconductors; magnetic levitation; plasma confinement; silver; strontium compounds; superconducting coils; superconducting tapes; Bi-2223 Ag-sheathed tape; Bi-2223 Ag/Mn-sheathed tape; Bi₂Sr₂Ca₂Cu₃O-Ag; coil; floating control; high temperature superconductor; high temperature superconductors; high-beta nonneutral plasmas confinement; laser displacement gauges; liquid nitrogen cooling; magnetic confinement; magnetically levitated high-temperature superconducting coil system; mini-RT project; mini-ring trap; miniature double-pancake coil; persistent current switch; Displacement control; High temperature superconductors; Magnetic confinement; Magnetic levitation; Plasma confinement; Plasma temperature; Research and development; Superconducting coils; Superconducting magnets; Switches;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2002.1018556

Filename

1018556