A digital flux injector for NMR magnets

Rocky Mai, Seung Yong Hahn, Haigun Lee, Juan Bascuñán, Yukikazu Iwasa

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


By periodically injecting a quantified amount of flux in a "slightly" resistive NMR magnet, a digital flux injector (DFI) enables the magnet to effectively operate in persistent mode. This paper presents: 1) parameters of the first full-scale DFI, specifically designed and built to operate with an LTS/HTS NMR magnet; and 2) its preliminary results when coupled to an LTS insert magnet in a bath of liquid helium.

Original languageEnglish
Pages (from-to)2348-2351
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number2 PART II
Publication statusPublished - 2005 Jun
Externally publishedYes

Bibliographical note

Funding Information:
Manuscript received October 4, 2001. This work was supported by the NIH National Center for Research Resources. The authors are with the MIT Francis Bitter Magnet Laboratory (FBML), Cambridge, MA 02139 USA (e-mail: kangkang@mit.edu; syhahn@jokaku. mit.edu; hlee@jokaku.mit.edu; bascunan@mit.edu; iwasa@jokaku.mit.edu). Digital Object Identifier 10.1109/TASC.2005.849663

Funding Information:
One (S. Hahn) of the authors expresses gratitude for the support by the Post-doctoral Fellowship Program of Korea Science & Engineering Foundation (KOSEF).


  • Digital flux injector
  • LTS/HTS magnet
  • NMR magnet
  • Persistent mode

ASJC Scopus subject areas

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


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