Investigating irradiation effects and space charge sign inversion in n-type Low Gain Avalanche Detectors

Low Gain Avalanche Detectors built on n-type substrate (nLGADs) have been developed by IMB-CNM to enhance the detection of low-penetrating particles, with a wide range of applications from medicine, industry to synergies with developments for high-energy physics (HEP). In this work, irradiation effe...

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Autores: Kraus, Veronika, Biveinytė, Margarita, Fernández-García, Marcos, Hidalgo, Salvador, Moll, Michael, Villegas, Jairo, Wiehe, Moritz
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:10261/398682
Acceso en línea:http://hdl.handle.net/10261/398682
Access Level:acceso abierto
Palabra clave:LGAD
TPA-TCT
Irradiation
Gain
Type inversion
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spelling Investigating irradiation effects and space charge sign inversion in n-type Low Gain Avalanche DetectorsKraus, VeronikaBiveinytė, MargaritaFernández-García, MarcosHidalgo, SalvadorMoll, MichaelVillegas, JairoWiehe, MoritzLGADTPA-TCTIrradiationGainType inversionLow Gain Avalanche Detectors built on n-type substrate (nLGADs) have been developed by IMB-CNM to enhance the detection of low-penetrating particles, with a wide range of applications from medicine, industry to synergies with developments for high-energy physics (HEP). In this work, irradiation effects on nLGADs were investigated through proton irradiation at the CERN PS-IRRAD facility up to proton fluences of 1 x 1014 cm−2. Electrical characterization before and after irradiation reveals space charge sign inversion of the n-type bulk, leading to significant modifications in the depletion behavior and electric field distribution. Utilizing UV TCT and TPA-TCT measurements, the impact of irradiation on the electric fields and the gain are studied in more detail, confirming a change of sensor depletion and a reduced electric field in the gain layer. The results suggest that donor removal in nLGADs is stronger pronounced already at lower fluences compared to acceptor removal in traditional p-type LGADs. These findings provide not only first insights into the effects of irradiation on nLGADs but also contribute to the development of methods to quantify the donor removal.This project has received funding from the European Union’s Horizon Europe Research and Innovation program under Grant Agreement No 101057511 (EURO-LABS). We thank IMB-CNM for the samples, which have been funded by the Spanish Ministry of Science, Innovation and Universities (MICIU/AEI/10.13039/501100011033/) and by the European Union’s ERDF program “A way of making Europe” (Grant references: PID2020-113705RB-C32, PID2021-124660OB-C22).Peer reviewedElsevierEuropean CommissionEuropean Research CouncilAgencia Estatal de Investigación (España)Ministerio de Ciencia, Innovación y Universidades (España)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/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/398682reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/EC/HE/101057511info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2020-113705RB-C32info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-124660OB-C22https://doi.org/10.1016/j.nima.2025.170763Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3986822026-05-22T06:33:51Z
dc.title.none.fl_str_mv Investigating irradiation effects and space charge sign inversion in n-type Low Gain Avalanche Detectors
title Investigating irradiation effects and space charge sign inversion in n-type Low Gain Avalanche Detectors
spellingShingle Investigating irradiation effects and space charge sign inversion in n-type Low Gain Avalanche Detectors
Kraus, Veronika
LGAD
TPA-TCT
Irradiation
Gain
Type inversion
title_short Investigating irradiation effects and space charge sign inversion in n-type Low Gain Avalanche Detectors
title_full Investigating irradiation effects and space charge sign inversion in n-type Low Gain Avalanche Detectors
title_fullStr Investigating irradiation effects and space charge sign inversion in n-type Low Gain Avalanche Detectors
title_full_unstemmed Investigating irradiation effects and space charge sign inversion in n-type Low Gain Avalanche Detectors
title_sort Investigating irradiation effects and space charge sign inversion in n-type Low Gain Avalanche Detectors
dc.creator.none.fl_str_mv Kraus, Veronika
Biveinytė, Margarita
Fernández-García, Marcos
Hidalgo, Salvador
Moll, Michael
Villegas, Jairo
Wiehe, Moritz
author Kraus, Veronika
author_facet Kraus, Veronika
Biveinytė, Margarita
Fernández-García, Marcos
Hidalgo, Salvador
Moll, Michael
Villegas, Jairo
Wiehe, Moritz
author_role author
author2 Biveinytė, Margarita
Fernández-García, Marcos
Hidalgo, Salvador
Moll, Michael
Villegas, Jairo
Wiehe, Moritz
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv European Commission
European Research Council
Agencia Estatal de Investigación (España)
Ministerio de Ciencia, Innovación y Universidades (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv LGAD
TPA-TCT
Irradiation
Gain
Type inversion
topic LGAD
TPA-TCT
Irradiation
Gain
Type inversion
description Low Gain Avalanche Detectors built on n-type substrate (nLGADs) have been developed by IMB-CNM to enhance the detection of low-penetrating particles, with a wide range of applications from medicine, industry to synergies with developments for high-energy physics (HEP). In this work, irradiation effects on nLGADs were investigated through proton irradiation at the CERN PS-IRRAD facility up to proton fluences of 1 x 1014 cm−2. Electrical characterization before and after irradiation reveals space charge sign inversion of the n-type bulk, leading to significant modifications in the depletion behavior and electric field distribution. Utilizing UV TCT and TPA-TCT measurements, the impact of irradiation on the electric fields and the gain are studied in more detail, confirming a change of sensor depletion and a reduced electric field in the gain layer. The results suggest that donor removal in nLGADs is stronger pronounced already at lower fluences compared to acceptor removal in traditional p-type LGADs. These findings provide not only first insights into the effects of irradiation on nLGADs but also contribute to the development of methods to quantify the donor removal.
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
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/398682
url http://hdl.handle.net/10261/398682
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/EC/HE/101057511
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2020-113705RB-C32
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-124660OB-C22
https://doi.org/10.1016/j.nima.2025.170763
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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