A solid-nitrogen cooled Nb3Sn NMR magnet operating in the range 8-10 K

Yukikazu Iwasa, Roger Wheatley, Juan Bascuñán, Benjamin Haid, Haigun Lee

Research output: Contribution to journalConference articlepeer-review

7 Citations (Scopus)


This paper presents a reference design of a solid-nitrogen cooled 300-MHz/25 mm Nb3Sn NMR magnet based on a novel design/operation concept. The magnet operates in the temperature range 8-10 K with its cryocooler thermally decoupled from the magnet and idled. A mass of solid nitrogen in thermal contact with the magnet prolongs the magnet warm-up time to 17 h, during which NMR measurement may be performed under a quiet environment free of the cryocooler's microphonics. At 10 K, the magnet is re-coupled to the cryocooler for recooling to 8 K and ready for another 17-h measurement.

Original languageEnglish
Pages (from-to)1636-1639
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number2 II
Publication statusPublished - 2003 Jun
Externally publishedYes
Event2002 Applied Superconductivity Conference - Houston, TX, United States
Duration: 2002 Aug 42002 Aug 9


  • Cryocooler-decoupled operation of a superconducting magnet
  • Solid neon
  • Solid nitrogen

ASJC Scopus subject areas

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


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