Evaluation of a silicon carbide P-N diode for thermal neutron detection in a radiotherapy LINAC
Accurate neutron detection in mixed photon-neutron and pulsed radiation fields is technically challenging, impacting industrial and medical applications. This paper presents the first measurements of thermal neutrons in conventional radiotherapy accelerators using a silicon carbide (SiC) P-N diode w...
| Autores: | , , , , , , , , , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/400525 |
| Acceso en línea: | http://hdl.handle.net/10261/400525 https://digital.csic.es/handle/10261/396531 |
| Access Level: | acceso abierto |
| Palabra clave: | Neutron detectors Radiotherapy SiC http://metadata.un.org/sdg/9 Build resilient infrastructure, promote inclusive and sustainable industrialization and foster innovation |
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Evaluation of a silicon carbide P-N diode for thermal neutron detection in a radiotherapy LINAC |
| title |
Evaluation of a silicon carbide P-N diode for thermal neutron detection in a radiotherapy LINAC |
| spellingShingle |
Evaluation of a silicon carbide P-N diode for thermal neutron detection in a radiotherapy LINAC Pérez, Martín Neutron detectors Radiotherapy SiC http://metadata.un.org/sdg/9 Build resilient infrastructure, promote inclusive and sustainable industrialization and foster innovation |
| title_short |
Evaluation of a silicon carbide P-N diode for thermal neutron detection in a radiotherapy LINAC |
| title_full |
Evaluation of a silicon carbide P-N diode for thermal neutron detection in a radiotherapy LINAC |
| title_fullStr |
Evaluation of a silicon carbide P-N diode for thermal neutron detection in a radiotherapy LINAC |
| title_full_unstemmed |
Evaluation of a silicon carbide P-N diode for thermal neutron detection in a radiotherapy LINAC |
| title_sort |
Evaluation of a silicon carbide P-N diode for thermal neutron detection in a radiotherapy LINAC |
| dc.creator.none.fl_str_mv |
Pérez, Martín Zamorano, Felipe Fleta, Celeste Muñoz-Montplet, Carles Jurado-Bruggeman, Diego Jiménez, Marcio Guardia, Pablo Grabulosa-Morera, Gina Morales-Pérez, Roger Rius, Gemma Godignon, Philippe Pellegrini, Giulio Guardiola, Consuelo |
| author |
Pérez, Martín |
| author_facet |
Pérez, Martín Zamorano, Felipe Fleta, Celeste Muñoz-Montplet, Carles Jurado-Bruggeman, Diego Jiménez, Marcio Guardia, Pablo Grabulosa-Morera, Gina Morales-Pérez, Roger Rius, Gemma Godignon, Philippe Pellegrini, Giulio Guardiola, Consuelo |
| author_role |
author |
| author2 |
Zamorano, Felipe Fleta, Celeste Muñoz-Montplet, Carles Jurado-Bruggeman, Diego Jiménez, Marcio Guardia, Pablo Grabulosa-Morera, Gina Morales-Pérez, Roger Rius, Gemma Godignon, Philippe Pellegrini, Giulio Guardiola, Consuelo |
| author2_role |
author author author author author author author author author author author author |
| dc.contributor.none.fl_str_mv |
European Commission Consejo de Seguridad Nuclear (España) Ministerio de Ciencia e Innovación (España) #NODATA# #NODATA# #NODATA# #NODATA# #NODATA# #NODATA# #NODATA# #NODATA# #NODATA# #NODATA# #NODATA# #NODATA# #NODATA# Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72] |
| dc.subject.none.fl_str_mv |
Neutron detectors Radiotherapy SiC http://metadata.un.org/sdg/9 Build resilient infrastructure, promote inclusive and sustainable industrialization and foster innovation |
| topic |
Neutron detectors Radiotherapy SiC http://metadata.un.org/sdg/9 Build resilient infrastructure, promote inclusive and sustainable industrialization and foster innovation |
| description |
Accurate neutron detection in mixed photon-neutron and pulsed radiation fields is technically challenging, impacting industrial and medical applications. This paper presents the first measurements of thermal neutrons in conventional radiotherapy accelerators using a silicon carbide (SiC) P-N diode with different neutron converters. SiC detectors enable real-time estimation of secondary thermal neutron contributions, crucial for emerging radiotherapy techniques requiring precise neutron fluence monitoring. Beyond medical applications, the presented detectors show potential for neutron dosimetry, radiation monitoring, nuclear safety, and scientific research. The SiC diode active detection layer is less than 30 µm thick, and provides excellent gamma rejection ([Formula: see text]), allowing discrimination of neutrons-induced events in mixed radiation fields. Experimental tests conducted on a TrueBeam radiotherapy LINAC demonstrated a thermal neutron detection efficiency of (4.32 ± 0.02)% for a (50 ± 10) µm thick [Formula: see text]LiF neutron converter. The detector, placed at 1.2 m from the accelerator isocenter, was used to measure neutron fluences at different monitor unit (MU) rates, ranging from 100 to 600 MU/min, with the LINAC operating at 15 MV. Under these conditions, the detector exhibited good linearity, without saturation or dead time effects. |
| publishDate |
2025 |
| dc.date.none.fl_str_mv |
2025 2025 2025 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article http://purl.org/coar/resource_type/c_6501 Publisher's version info:eu-repo/semantics/publishedVersion |
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article |
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publishedVersion |
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http://hdl.handle.net/10261/400525 https://digital.csic.es/handle/10261/396531 |
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http://hdl.handle.net/10261/400525 https://digital.csic.es/handle/10261/396531 |
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Inglés |
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Inglés |
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#PLACEHOLDER_PARENT_METADATA_VALUE# #PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-124660OB-C22 info:eu-repo/grantAgreement/EC/Marie Sklodowska-Curie grant agreement N◦ 101106191/ Replication data for Evaluation of a silicon carbide P–N diode for thermal neutron detection in a radiotherapy LINAC https://digital.csic.es/handle/10261/396531 https://doi.org/10.1038/s41598-025-13052-w Sí |
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info:eu-repo/semantics/openAccess |
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openAccess |
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Springer Nature |
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Springer Nature |
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reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC instname:Consejo Superior de Investigaciones Científicas (CSIC) |
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Consejo Superior de Investigaciones Científicas (CSIC) |
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DIGITAL.CSIC. Repositorio Institucional del CSIC |
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DIGITAL.CSIC. Repositorio Institucional del CSIC |
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1869424273563582464 |
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Evaluation of a silicon carbide P-N diode for thermal neutron detection in a radiotherapy LINACPérez, MartínZamorano, FelipeFleta, CelesteMuñoz-Montplet, CarlesJurado-Bruggeman, DiegoJiménez, MarcioGuardia, PabloGrabulosa-Morera, GinaMorales-Pérez, RogerRius, GemmaGodignon, PhilippePellegrini, GiulioGuardiola, ConsueloNeutron detectorsRadiotherapySiChttp://metadata.un.org/sdg/9Build resilient infrastructure, promote inclusive and sustainable industrialization and foster innovationAccurate neutron detection in mixed photon-neutron and pulsed radiation fields is technically challenging, impacting industrial and medical applications. This paper presents the first measurements of thermal neutrons in conventional radiotherapy accelerators using a silicon carbide (SiC) P-N diode with different neutron converters. SiC detectors enable real-time estimation of secondary thermal neutron contributions, crucial for emerging radiotherapy techniques requiring precise neutron fluence monitoring. Beyond medical applications, the presented detectors show potential for neutron dosimetry, radiation monitoring, nuclear safety, and scientific research. The SiC diode active detection layer is less than 30 µm thick, and provides excellent gamma rejection ([Formula: see text]), allowing discrimination of neutrons-induced events in mixed radiation fields. Experimental tests conducted on a TrueBeam radiotherapy LINAC demonstrated a thermal neutron detection efficiency of (4.32 ± 0.02)% for a (50 ± 10) µm thick [Formula: see text]LiF neutron converter. The detector, placed at 1.2 m from the accelerator isocenter, was used to measure neutron fluences at different monitor unit (MU) rates, ranging from 100 to 600 MU/min, with the LINAC operating at 15 MV. Under these conditions, the detector exhibited good linearity, without saturation or dead time effects.This project has received funding from the European Union Horizon 2022 research and innovation program under the Marie Sklodowska-Curie grant agreement N101106191. This work has also been funded by the Consejo de Seguridad Nuclear (CSN) under the project Subvenciones 2022 SUB-08, and by the Spanish Ministry of Science and Innovation (MCIN/AEI/10.13039/501100011033/) and by the European Union ERDF program ’A way of making Europe’. Grant references: PID2021-124660OB-C22. This work has also been founded by the Spanish government through the ’María de Maeztu Unit of Excelence’ accreditationCEX2023-001397-M, funded by MICIU/AEI/10.13039/501100011033. This work was partially funded by the MCIN/AEI/10.13039/501100011033 (Grant No. CNS2022-13558), and the ‘Severo Ochoa’ Programme for Center of Excellence in R&D funded by MCIN and by FEDER, “A way of making Europe” (Grant No. CEX2023-001263-S). P. G. acknowledges financial support from the Ramon y Cajal program funded by the MCIN/AEI/10.13039/501100011033 and the “FSE invierte en tu futuro” (Grant No. RYC2019-028414). The authors thank Javier Bravo, Iván Lopez Paz, Xavier Ayesta, and Esteve Cot for their technical assistance, and also the staff of IMB-CNM-CSIC and ICO-Girona.Peer reviewedSpringer NatureEuropean CommissionConsejo de Seguridad Nuclear (España)Ministerio de Ciencia e Innovación (España)#NODATA##NODATA##NODATA##NODATA##NODATA##NODATA##NODATA##NODATA##NODATA##NODATA##NODATA##NODATA##NODATA#Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202520252025info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/400525https://digital.csic.es/handle/10261/396531reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-124660OB-C22info:eu-repo/grantAgreement/EC/Marie Sklodowska-Curie grant agreement N◦ 101106191/Replication data for Evaluation of a silicon carbide P–N diode for thermal neutron detection in a radiotherapy LINAChttps://digital.csic.es/handle/10261/396531https://doi.org/10.1038/s41598-025-13052-wSíinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/4005252026-05-22T06:33:51Z |
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15,811543 |