Design, Construction and Characterization of a Magic Angle Field Spinning RF Magnet

Magic angle field spinning (MAFS) is a Nuclear Magnetic Resonance (NMR) spectroscopy technique used in NMR Compact Devices to enhance the spectral resolution. In this technique, the sample is placed inside a magnet which generates a magnetic flux density oriented at 54.74° with respect to the sample...

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Autores: Alonso Valdesueiro, Javier, Sisniega Soriano, Beatriz, Rodrigo Arrizabalaga, Irati, Pérez Muñoz, Jorge, Collantes Metola, Juan María, Plazaola Muguruza, Fernando
Tipo de recurso: artículo
Fecha de publicación:2018
País:España
Institución:Universidad del País Vasco
Repositorio:Addi. Archivo Digital para la Docencia y la Investigación
OAI Identifier:oai:addi.ehu.eus:10810/71056
Acceso en línea:http://hdl.handle.net/10810/71056
Access Level:acceso abierto
Palabra clave:Instrumentation and measurement
magnetic field measurement
magnetic resonance imaging (MRI)
nuclear magnetic resonance (NMR)
radio frequency
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spelling Design, Construction and Characterization of a Magic Angle Field Spinning RF MagnetAlonso Valdesueiro, JavierSisniega Soriano, BeatrizRodrigo Arrizabalaga, IratiPérez Muñoz, JorgeCollantes Metola, Juan MaríaPlazaola Muguruza, FernandoInstrumentation and measurementmagnetic field measurementmagnetic resonance imaging (MRI)nuclear magnetic resonance (NMR)radio frequencyMagic angle field spinning (MAFS) is a Nuclear Magnetic Resonance (NMR) spectroscopy technique used in NMR Compact Devices to enhance the spectral resolution. In this technique, the sample is placed inside a magnet which generates a magnetic flux density oriented at 54.74° with respect to the sample main axis and spun at high frequencies. We present here, the design and construction of a novel magnet that generates a magnetic field according to the MAFS technique. The prototype generates two radio frequency and one dc magnetic fields by the combined action of three electromagnets. This combination results in a magnetic flux density of ~10 mT, with field deviations ≤1% inside a cylindrical volume of 30 × 30 mm, an orientation easily controlled by field amplitudes and precessing at frequencies up to 12 kHz. The magnet has been characterized by using a novel Flux+Gauss meter (FGM) built and calibrated in-house. The FGM is able to measure ac and dc magnetic fields along seven different longitudinal axes, one of them corresponds to the longitudinal axis of the prototype. The other six axes are placed at six angular orientations on a 30-mm-diameter circumference. The characterization of the magnet includes field profiles of the RF and dc fields along the FGM axes and deviations of the field in the 30 × 30 mm cylinder. The homogeneity is evaluated as the relative differences between the field measured at the centered axis and the field measured along the six extra axes for both RF and dc fields.This work was supported in part by the Marie Sklodowska-Curie through the European Union’s Horizon 2020 Research and Innovation Program under Grant 750445 and in part by the Culture, Linguistics, Politics and Education Department, Basque Country Government under Grant IT1104-16.IEEE202420242018info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10810/71056reponame:Addi. Archivo Digital para la Docencia y la Investigacióninstname:Universidad del País VascoInglésinfo:eu-repo/grantAgreement/EC/H2020/750445https://doi.org/10.1109/TIM.2018.2884606info:eu-repo/semantics/openAccess© 2018 IEEEoai:addi.ehu.eus:10810/710562026-06-18T09:23:17Z
dc.title.none.fl_str_mv Design, Construction and Characterization of a Magic Angle Field Spinning RF Magnet
title Design, Construction and Characterization of a Magic Angle Field Spinning RF Magnet
spellingShingle Design, Construction and Characterization of a Magic Angle Field Spinning RF Magnet
Alonso Valdesueiro, Javier
Instrumentation and measurement
magnetic field measurement
magnetic resonance imaging (MRI)
nuclear magnetic resonance (NMR)
radio frequency
title_short Design, Construction and Characterization of a Magic Angle Field Spinning RF Magnet
title_full Design, Construction and Characterization of a Magic Angle Field Spinning RF Magnet
title_fullStr Design, Construction and Characterization of a Magic Angle Field Spinning RF Magnet
title_full_unstemmed Design, Construction and Characterization of a Magic Angle Field Spinning RF Magnet
title_sort Design, Construction and Characterization of a Magic Angle Field Spinning RF Magnet
dc.creator.none.fl_str_mv Alonso Valdesueiro, Javier
Sisniega Soriano, Beatriz
Rodrigo Arrizabalaga, Irati
Pérez Muñoz, Jorge
Collantes Metola, Juan María
Plazaola Muguruza, Fernando
author Alonso Valdesueiro, Javier
author_facet Alonso Valdesueiro, Javier
Sisniega Soriano, Beatriz
Rodrigo Arrizabalaga, Irati
Pérez Muñoz, Jorge
Collantes Metola, Juan María
Plazaola Muguruza, Fernando
author_role author
author2 Sisniega Soriano, Beatriz
Rodrigo Arrizabalaga, Irati
Pérez Muñoz, Jorge
Collantes Metola, Juan María
Plazaola Muguruza, Fernando
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Instrumentation and measurement
magnetic field measurement
magnetic resonance imaging (MRI)
nuclear magnetic resonance (NMR)
radio frequency
topic Instrumentation and measurement
magnetic field measurement
magnetic resonance imaging (MRI)
nuclear magnetic resonance (NMR)
radio frequency
description Magic angle field spinning (MAFS) is a Nuclear Magnetic Resonance (NMR) spectroscopy technique used in NMR Compact Devices to enhance the spectral resolution. In this technique, the sample is placed inside a magnet which generates a magnetic flux density oriented at 54.74° with respect to the sample main axis and spun at high frequencies. We present here, the design and construction of a novel magnet that generates a magnetic field according to the MAFS technique. The prototype generates two radio frequency and one dc magnetic fields by the combined action of three electromagnets. This combination results in a magnetic flux density of ~10 mT, with field deviations ≤1% inside a cylindrical volume of 30 × 30 mm, an orientation easily controlled by field amplitudes and precessing at frequencies up to 12 kHz. The magnet has been characterized by using a novel Flux+Gauss meter (FGM) built and calibrated in-house. The FGM is able to measure ac and dc magnetic fields along seven different longitudinal axes, one of them corresponds to the longitudinal axis of the prototype. The other six axes are placed at six angular orientations on a 30-mm-diameter circumference. The characterization of the magnet includes field profiles of the RF and dc fields along the FGM axes and deviations of the field in the 30 × 30 mm cylinder. The homogeneity is evaluated as the relative differences between the field measured at the centered axis and the field measured along the six extra axes for both RF and dc fields.
publishDate 2018
dc.date.none.fl_str_mv 2018
2024
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10810/71056
url http://hdl.handle.net/10810/71056
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/EC/H2020/750445
https://doi.org/10.1109/TIM.2018.2884606
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
© 2018 IEEE
eu_rights_str_mv openAccess
rights_invalid_str_mv © 2018 IEEE
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv IEEE
publisher.none.fl_str_mv IEEE
dc.source.none.fl_str_mv reponame:Addi. Archivo Digital para la Docencia y la Investigación
instname:Universidad del País Vasco
instname_str Universidad del País Vasco
reponame_str Addi. Archivo Digital para la Docencia y la Investigación
collection Addi. Archivo Digital para la Docencia y la Investigación
repository.name.fl_str_mv
repository.mail.fl_str_mv
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