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

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

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Abstract

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
Volume13
Issue number2 II
DOIs
Publication statusPublished - 2003 Jun 1
Externally publishedYes

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Keywords

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

ASJC Scopus subject areas

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

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