Stand-alone solid nitrogen cooled "permanent" high-temperature superconducting magnet system

Benjamin Haid, Haigun Lee, Yukikazu Iwasa, Sang Soo Oh, Hong Soo Ha, Young Kil Kwon, Kang Sik Ryu

Research output: Contribution to journalArticle

27 Citations (Scopus)


This paper describes a stand-alone solid nitrogen cooled "permanent" high-temperature superconducting magnet system and presents its performance data. The system's cold body includes the magnet, shunted with a superconducting switch and comprised of six double pancakes, each wound with BSCCO-2223/Ag composite tape, and a volume of solid nitrogen and operates within a cyclic temperature range between 20 K and 40 K. At an operating current of 50 A the coil generates a central field of 0.5 T in a 12-mm diameter room temperature bore; the system's 2 liters of solid nitrogen is intended to give a cyclic operating period, from 20 K to 40 K, of about 70 hours. Included also in the paper is a preliminary design code that includes magnetic and thermal requirements of the system.

Original languageEnglish
Pages (from-to)2244-2247
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number1 II
Publication statusPublished - 2001 Mar 1
Externally publishedYes



  • HTS
  • Magnet
  • Persistent mode
  • Solid nitrogen

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Physics and Astronomy (miscellaneous)

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