A 500 MHz/200 mm RT bore solid neon cooled Nb3Sn MRI magnet - A status report

Juan Bascuñán, Haigun Lee, Emanuel S. Bobrov, Seungyong Hahn, Yukikazu Iwasa

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


We report here on the status of our program aimed to build and operate a dry MRI magnet. The system incorporates a new design/operational concept that we believe it will be eventually adopted by manufacturers of the next generation of superconducting magnets. System features include: a) liquid free; b) if required by the user, cryocooler microphonics free over a period of time; c) ability to maintain a constant operating field over a specified period of time, even in the event of a power outage or during cryocooler maintenance. The basis of this new design/operation concept, among other features, is the presence of solid cryogen, solid neon for this system, in the cold body that also contains the magnet to enhance significantly the cold body's heat capacity. Details of the system design - magnetic and cryogenics are presented in this paper.

Original languageEnglish
Article number1643147
Pages (from-to)1535-1538
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number2
Publication statusPublished - 2006 Jun
Externally publishedYes

Bibliographical note

Funding Information:
Manuscript received September 20, 2005 . This work was supported by the NIH National Institute of Biomedical Imaging and Bioengineering. The authors are with the MIT Francis Bitter Magnet Laboratory, Cambridge, MA 02139 USA (e-mail: bascunan@mit.edu; hlee@ljokaku.mit.edu; bobrov@mit.edu; syhahn@jokaku.mit.edu; iwasa@jokaku.mit.edu). Digital Object Identifier 10.1109/TASC.2005.864453 Fig. 1. Schematic drawing of a cross section of the 500 MHz/20 cm cryocooler/ solid Ne cooled superconducting MRI magnet system (dimensions in mm).


  • Dry magnet
  • MRI
  • Solenoid
  • Solid cryogen

ASJC Scopus subject areas

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


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