A flux pump for NMR magnets

Haigun Lee; Ho Min Kim; Yukikazu Iwasa

doi:10.1109/TASC.2003.812852

A flux pump for NMR magnets

Haigun Lee, Ho Min Kim, Yukikazu Iwasa

Research output: Contribution to journal › Conference article › peer-review

25 Citations (Scopus)

Abstract

A flux pump coupled to a slightly dissipative NMR magnet enables the magnet to operate effectively in persistent mode. This paper presents: 1) design and operation concept of the flux pump; 2) parameters and performance results of a prototype flux pump; and 3) a plan to couple a full-scale flux pump to two NMR magnets, one comprised of low- and high-temperature (LTS/HTS) superconducting coils in which the HTS insert is dissipative and the other an all-LTS which can be artificially made resistive. Performance results of the prototype coupled, sequentially, to two Nb-Ti magnets show that agreement between analysis and experiment is excellent.

Original language	English
Pages (from-to)	1640-1643
Number of pages	4
Journal	IEEE Transactions on Applied Superconductivity
Volume	13
Issue number	2 II
DOIs	https://doi.org/10.1109/TASC.2003.812852
Publication status	Published - 2003 Jun
Externally published	Yes
Event	2002 Applied Superconductivity Conference - Houston, TX, United States Duration: 2002 Aug 4 → 2002 Aug 9

Keywords

Flux pump
NMR magnet

ASJC Scopus subject areas

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

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10.1109/TASC.2003.812852

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title = "A flux pump for NMR magnets",

abstract = "A flux pump coupled to a slightly dissipative NMR magnet enables the magnet to operate effectively in persistent mode. This paper presents: 1) design and operation concept of the flux pump; 2) parameters and performance results of a prototype flux pump; and 3) a plan to couple a full-scale flux pump to two NMR magnets, one comprised of low- and high-temperature (LTS/HTS) superconducting coils in which the HTS insert is dissipative and the other an all-LTS which can be artificially made resistive. Performance results of the prototype coupled, sequentially, to two Nb-Ti magnets show that agreement between analysis and experiment is excellent.",

keywords = "Flux pump, NMR magnet",

author = "Haigun Lee and Kim, {Ho Min} and Yukikazu Iwasa",

note = "Funding Information: Manuscript received August 5, 2002. This work was supported by the NIH National Center for Research Resources. H. Lee is with the MIT Francis Bitter Magnet Laboratory (FBML), Cambridge, MA 02139-4208 USA, and also with American Magnetics, Inc., Oak Ridge, TN 37831-2509 USA (e-mail: hlee@jokaku.mit.edu). H. Kim and Y. Iwasa are with the MIT Francis Bitter Magnet Laboratory (FBML), Cambridge, MA 02139-4208 USA (e-mail: homin@jokaku.mit.edu; iwasa@jokaku.mit.edu). Digital Object Identifier 10.1109/TASC.2003.812852; 2002 Applied Superconductivity Conference ; Conference date: 04-08-2002 Through 09-08-2002",

year = "2003",

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doi = "10.1109/TASC.2003.812852",

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AU - Lee, Haigun

AU - Kim, Ho Min

AU - Iwasa, Yukikazu

N1 - Funding Information: Manuscript received August 5, 2002. This work was supported by the NIH National Center for Research Resources. H. Lee is with the MIT Francis Bitter Magnet Laboratory (FBML), Cambridge, MA 02139-4208 USA, and also with American Magnetics, Inc., Oak Ridge, TN 37831-2509 USA (e-mail: hlee@jokaku.mit.edu). H. Kim and Y. Iwasa are with the MIT Francis Bitter Magnet Laboratory (FBML), Cambridge, MA 02139-4208 USA (e-mail: homin@jokaku.mit.edu; iwasa@jokaku.mit.edu). Digital Object Identifier 10.1109/TASC.2003.812852

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AB - A flux pump coupled to a slightly dissipative NMR magnet enables the magnet to operate effectively in persistent mode. This paper presents: 1) design and operation concept of the flux pump; 2) parameters and performance results of a prototype flux pump; and 3) a plan to couple a full-scale flux pump to two NMR magnets, one comprised of low- and high-temperature (LTS/HTS) superconducting coils in which the HTS insert is dissipative and the other an all-LTS which can be artificially made resistive. Performance results of the prototype coupled, sequentially, to two Nb-Ti magnets show that agreement between analysis and experiment is excellent.

KW - Flux pump

KW - NMR magnet

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Y2 - 4 August 2002 through 9 August 2002

ER -

A flux pump for NMR magnets

Abstract

Keywords

ASJC Scopus subject areas

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