Upgrading design to a 25 T cryogen-free superconducting magnet based on low temperature and high magnetic field properties of the practical CVD processed coated conductors

Satoshi Awaji, Ryosuke Ishihara, Masafumi Namba, Gen Nishijima, Hidetoshi Oguro, Kazuo Watanabe, Koji Shikimachi, Naoki Hirano, Shigeo Nagaya

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

Abstract

We evaluated critical current density and mechanical properties of the Y123 coated conductor (CC) tapes on buffered Hastelloy substrates prepared by the chemical vapor deposition method in high magnetic fields and low temperatures. The Jc values of the tape are about 1.1 MA/cm2 at 77.3 K, 0 T and 1.8 MA/cm2 at 4.2 K and 17 T for B//c. In addition, the hoop stress test of the single layer coil shows that the stress limit of the CVD-Y123 CC tapes on Hastelloy is over 1 GPa. On the basis of those experimental data, we designed the innermost high temperature superconducting insert coil for upgrading of the 18 T cryogen-free superconducting magnet (18 T-CSM) under the condition of the stress limit of 600 MPa. The coil, which consists of the 22 double pancake coils can generate 9.4 T with the operation current of 295 A in the backup field of 15.6 T. In this case, the central field of the 18 T-CSM can be improved up to 25 T from 18.1 T.

Original languageEnglish
Article number5438867
Pages (from-to)592-595
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Volume20
Issue number3
DOIs
Publication statusPublished - 2010 Jun

Keywords

  • Coated conductor
  • Critical current
  • Cryogen-free superconducting magnet
  • High field

ASJC Scopus subject areas

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

Fingerprint Dive into the research topics of 'Upgrading design to a 25 T cryogen-free superconducting magnet based on low temperature and high magnetic field properties of the practical CVD processed coated conductors'. Together they form a unique fingerprint.

Cite this