Comparative study of helical-cut notch–coil magnets for fast-field-cycling nuclear magnetic resonance

Autores
Kruber, Stephan; Farrher, German David; Anoardo, Esteban
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In this manuscript we describe an -helical-cut notch–coil magnet system designed for fast switching of the magneticfield. An attempt was made to determine the extent to which such a magnet configuration can be efficiently used for fast-field-cycling (FFC) nuclear magnetic resonance (NMR) instruments. In addition to the typical technical requirements (high field-to-power ratio, adequate electric performance for fast-switching of the magnetic field and NMR-compatible magnetic fieldhomogeneity), a tunable homogeneity within the sample volume and more uniform heat dissipation along the magnet body areincluded. A helical-cut notch–coil machined in metallic cylinders with external movable pieces was found to fit these require-ments very well. A key factor for the optimization of the magnet parameters is the use of a novel calculation procedure based ona more realistic model that consider a magnet geometry with broken azimuthal symmetry. The aim of this paper is to theoret-ically compare the proposed geometry with other existing designs. No particular prototype is presented here. A clear under-standing of the notch–coil performance was found to be an essential step for its further consideration as a potential autoadaptive(electronically controlled) magnet system for FFC applications.
Nous décrivons ici un système magnétique, comportant une bobine avec une coche hélicoïdale, destiné a`unecommutation cyclique rapide du champ magnétique. Nous tentons de déterminer si cette configuration serait efficace dans uninstrument de résonance magnétique nucléaire (RMN) a`cycle rapide du champ. En plus des exigences techniques habituelles(haut rapport champ/puissance, bonne performance électrique dans la commutation rapide du champ magnétique et unehomogénéité de champ compatible avec des mesures de RMN), nous incluons une homogénéité ajustable du champ magnétiquedans le volume de l’échantillon et une dissipation plus uniforme de la chaleur le long de l’aimant. Nous trouvons qu’une bobineavec une coche hélicoïdale usinée dans des cylindres métalliques avec pièces extérieures déplaçables remplit très bien cesexigences. Un facteur clé dans l’optimisation des paramètres de l’aimant est l’utilisation d’une nouvelle procédure de calculbasée sur un modèle réaliste qui considère une géométrie d’aimant dont la symétrie azimutale est brisée. Notre objectif ici estde comparer théoriquement la géométrie que nous proposons avec d’autres existant déja`. Nous ne présentons aucun prototype.Une compréhension claire de la performance d’une bobine avec coche est une étape essentielle pour évaluer son potentielcomme système magnétique.
Fil: Kruber, Stephan. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina
Fil: Farrher, German David. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina
Fil: Anoardo, Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina
Materia
Ffc - Nmr
Magnet Systems
Homogeneity
Optimization
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/31700

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network_name_str CONICET Digital (CONICET)
spelling Comparative study of helical-cut notch–coil magnets for fast-field-cycling nuclear magnetic resonanceKruber, StephanFarrher, German DavidAnoardo, EstebanFfc - NmrMagnet SystemsHomogeneityOptimizationhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1In this manuscript we describe an -helical-cut notch–coil magnet system designed for fast switching of the magneticfield. An attempt was made to determine the extent to which such a magnet configuration can be efficiently used for fast-field-cycling (FFC) nuclear magnetic resonance (NMR) instruments. In addition to the typical technical requirements (high field-to-power ratio, adequate electric performance for fast-switching of the magnetic field and NMR-compatible magnetic fieldhomogeneity), a tunable homogeneity within the sample volume and more uniform heat dissipation along the magnet body areincluded. A helical-cut notch–coil machined in metallic cylinders with external movable pieces was found to fit these require-ments very well. A key factor for the optimization of the magnet parameters is the use of a novel calculation procedure based ona more realistic model that consider a magnet geometry with broken azimuthal symmetry. The aim of this paper is to theoret-ically compare the proposed geometry with other existing designs. No particular prototype is presented here. A clear under-standing of the notch–coil performance was found to be an essential step for its further consideration as a potential autoadaptive(electronically controlled) magnet system for FFC applications.Nous décrivons ici un système magnétique, comportant une bobine avec une coche hélicoïdale, destiné a`unecommutation cyclique rapide du champ magnétique. Nous tentons de déterminer si cette configuration serait efficace dans uninstrument de résonance magnétique nucléaire (RMN) a`cycle rapide du champ. En plus des exigences techniques habituelles(haut rapport champ/puissance, bonne performance électrique dans la commutation rapide du champ magnétique et unehomogénéité de champ compatible avec des mesures de RMN), nous incluons une homogénéité ajustable du champ magnétiquedans le volume de l’échantillon et une dissipation plus uniforme de la chaleur le long de l’aimant. Nous trouvons qu’une bobineavec une coche hélicoïdale usinée dans des cylindres métalliques avec pièces extérieures déplaçables remplit très bien cesexigences. Un facteur clé dans l’optimisation des paramètres de l’aimant est l’utilisation d’une nouvelle procédure de calculbasée sur un modèle réaliste qui considère une géométrie d’aimant dont la symétrie azimutale est brisée. Notre objectif ici estde comparer théoriquement la géométrie que nous proposons avec d’autres existant déja`. Nous ne présentons aucun prototype.Une compréhension claire de la performance d’une bobine avec coche est une étape essentielle pour évaluer son potentielcomme système magnétique.Fil: Kruber, Stephan. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; ArgentinaFil: Farrher, German David. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; ArgentinaFil: Anoardo, Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; ArgentinaNational Research Council Canada-NRC Research Press2014-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/31700Anoardo, Esteban; Farrher, German David; Kruber, Stephan; Comparative study of helical-cut notch–coil magnets for fast-field-cycling nuclear magnetic resonance; National Research Council Canada-NRC Research Press; Canadian Journal Of Physics; 92; 11; 4-2014; 1430-14400008-4204CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1139/cjp-2013-0655info:eu-repo/semantics/altIdentifier/url/http://www.nrcresearchpress.com/doi/10.1139/cjp-2013-0655info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:22:40Zoai:ri.conicet.gov.ar:11336/31700instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:22:40.965CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Comparative study of helical-cut notch–coil magnets for fast-field-cycling nuclear magnetic resonance
title Comparative study of helical-cut notch–coil magnets for fast-field-cycling nuclear magnetic resonance
spellingShingle Comparative study of helical-cut notch–coil magnets for fast-field-cycling nuclear magnetic resonance
Kruber, Stephan
Ffc - Nmr
Magnet Systems
Homogeneity
Optimization
title_short Comparative study of helical-cut notch–coil magnets for fast-field-cycling nuclear magnetic resonance
title_full Comparative study of helical-cut notch–coil magnets for fast-field-cycling nuclear magnetic resonance
title_fullStr Comparative study of helical-cut notch–coil magnets for fast-field-cycling nuclear magnetic resonance
title_full_unstemmed Comparative study of helical-cut notch–coil magnets for fast-field-cycling nuclear magnetic resonance
title_sort Comparative study of helical-cut notch–coil magnets for fast-field-cycling nuclear magnetic resonance
dc.creator.none.fl_str_mv Kruber, Stephan
Farrher, German David
Anoardo, Esteban
author Kruber, Stephan
author_facet Kruber, Stephan
Farrher, German David
Anoardo, Esteban
author_role author
author2 Farrher, German David
Anoardo, Esteban
author2_role author
author
dc.subject.none.fl_str_mv Ffc - Nmr
Magnet Systems
Homogeneity
Optimization
topic Ffc - Nmr
Magnet Systems
Homogeneity
Optimization
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv In this manuscript we describe an -helical-cut notch–coil magnet system designed for fast switching of the magneticfield. An attempt was made to determine the extent to which such a magnet configuration can be efficiently used for fast-field-cycling (FFC) nuclear magnetic resonance (NMR) instruments. In addition to the typical technical requirements (high field-to-power ratio, adequate electric performance for fast-switching of the magnetic field and NMR-compatible magnetic fieldhomogeneity), a tunable homogeneity within the sample volume and more uniform heat dissipation along the magnet body areincluded. A helical-cut notch–coil machined in metallic cylinders with external movable pieces was found to fit these require-ments very well. A key factor for the optimization of the magnet parameters is the use of a novel calculation procedure based ona more realistic model that consider a magnet geometry with broken azimuthal symmetry. The aim of this paper is to theoret-ically compare the proposed geometry with other existing designs. No particular prototype is presented here. A clear under-standing of the notch–coil performance was found to be an essential step for its further consideration as a potential autoadaptive(electronically controlled) magnet system for FFC applications.
Nous décrivons ici un système magnétique, comportant une bobine avec une coche hélicoïdale, destiné a`unecommutation cyclique rapide du champ magnétique. Nous tentons de déterminer si cette configuration serait efficace dans uninstrument de résonance magnétique nucléaire (RMN) a`cycle rapide du champ. En plus des exigences techniques habituelles(haut rapport champ/puissance, bonne performance électrique dans la commutation rapide du champ magnétique et unehomogénéité de champ compatible avec des mesures de RMN), nous incluons une homogénéité ajustable du champ magnétiquedans le volume de l’échantillon et une dissipation plus uniforme de la chaleur le long de l’aimant. Nous trouvons qu’une bobineavec une coche hélicoïdale usinée dans des cylindres métalliques avec pièces extérieures déplaçables remplit très bien cesexigences. Un facteur clé dans l’optimisation des paramètres de l’aimant est l’utilisation d’une nouvelle procédure de calculbasée sur un modèle réaliste qui considère une géométrie d’aimant dont la symétrie azimutale est brisée. Notre objectif ici estde comparer théoriquement la géométrie que nous proposons avec d’autres existant déja`. Nous ne présentons aucun prototype.Une compréhension claire de la performance d’une bobine avec coche est une étape essentielle pour évaluer son potentielcomme système magnétique.
Fil: Kruber, Stephan. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina
Fil: Farrher, German David. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina
Fil: Anoardo, Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina
description In this manuscript we describe an -helical-cut notch–coil magnet system designed for fast switching of the magneticfield. An attempt was made to determine the extent to which such a magnet configuration can be efficiently used for fast-field-cycling (FFC) nuclear magnetic resonance (NMR) instruments. In addition to the typical technical requirements (high field-to-power ratio, adequate electric performance for fast-switching of the magnetic field and NMR-compatible magnetic fieldhomogeneity), a tunable homogeneity within the sample volume and more uniform heat dissipation along the magnet body areincluded. A helical-cut notch–coil machined in metallic cylinders with external movable pieces was found to fit these require-ments very well. A key factor for the optimization of the magnet parameters is the use of a novel calculation procedure based ona more realistic model that consider a magnet geometry with broken azimuthal symmetry. The aim of this paper is to theoret-ically compare the proposed geometry with other existing designs. No particular prototype is presented here. A clear under-standing of the notch–coil performance was found to be an essential step for its further consideration as a potential autoadaptive(electronically controlled) magnet system for FFC applications.
publishDate 2014
dc.date.none.fl_str_mv 2014-04
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/31700
Anoardo, Esteban; Farrher, German David; Kruber, Stephan; Comparative study of helical-cut notch–coil magnets for fast-field-cycling nuclear magnetic resonance; National Research Council Canada-NRC Research Press; Canadian Journal Of Physics; 92; 11; 4-2014; 1430-1440
0008-4204
CONICET Digital
CONICET
url http://hdl.handle.net/11336/31700
identifier_str_mv Anoardo, Esteban; Farrher, German David; Kruber, Stephan; Comparative study of helical-cut notch–coil magnets for fast-field-cycling nuclear magnetic resonance; National Research Council Canada-NRC Research Press; Canadian Journal Of Physics; 92; 11; 4-2014; 1430-1440
0008-4204
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1139/cjp-2013-0655
info:eu-repo/semantics/altIdentifier/url/http://www.nrcresearchpress.com/doi/10.1139/cjp-2013-0655
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv National Research Council Canada-NRC Research Press
publisher.none.fl_str_mv National Research Council Canada-NRC Research Press
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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