Experimental and Simulation Investigation of Micro- and Nano-Structured Neutron Detectors

We are investigating different micro- and nano-structure approaches to neutron detection based on inorganic scintillators. Specifically, we have been assessing various neutron converter-scintillator configurations through simulations and experiments. One promising inorganic scintillator is ZnO due t...

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Autores principales:	Logoglu Faruk, Albert Patrick, Wolfe Douglas, Flaska Marek
Formato:	article
Lenguaje:	EN
Publicado:	EDP Sciences 2021
Materias:	spectroscopy geant4 optimization neutron detectors scintillation Physics QC1-999
Acceso en línea:	https://doaj.org/article/44603ed6652f4dee8bf7c345f82107d3
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id	oai:doaj.org-article:44603ed6652f4dee8bf7c345f82107d3
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spelling	oai:doaj.org-article:44603ed6652f4dee8bf7c345f82107d32021-12-02T17:12:46ZExperimental and Simulation Investigation of Micro- and Nano-Structured Neutron Detectors2100-014X10.1051/epjconf/202125311010https://doaj.org/article/44603ed6652f4dee8bf7c345f82107d32021-01-01T00:00:00Zhttps://www.epj-conferences.org/articles/epjconf/pdf/2021/07/epjconf_animma2021_11010.pdfhttps://doaj.org/toc/2100-014XWe are investigating different micro- and nano-structure approaches to neutron detection based on inorganic scintillators. Specifically, we have been assessing various neutron converter-scintillator configurations through simulations and experiments. One promising inorganic scintillator is ZnO due to its relatively high light yield[1], reasonable optical transparency in the visible region[2], and relatively low refractive index[3] compared to other Zn-based crystals such as ZnS[4]. Accurate optical data and rigid simulation tools are necessary to optimize the dimensions of the neutron converter/scintillator systems. Accurate optical data are necessary since the optical parameters of a material depend on a variety of factors, including but not limited to its morphology, crystal structure, surface quality (surface roughness), as well as the temperature at which it was manufactured. Therefore, literature data show significant discrepancy when it comes to the optical parameters for the material and it is important to accurately measure these quantities for the specific sample of interest. Neutron detection is a complex process that includes neutron transport, charged particle transport, and light transport in the active detection medium. Hence, a rigid simulation tool is required to handle all these different areas of physics with sufficient accuracy. In this work, Geant4 has been chosen to carry out the simulations of these processes. Geant4 (GEometry ANd Tracking) is a toolkit used in various applications including high energy physics, astrophysics, and radiation detection[5]. The optical simulation capabilities of Geant4 have been validated by comparing the transmission and reflection data from UV-Vis spectroscopy to the Geant4 models for different Zn-based crystals. After validating the optical response of single crystals, simulation models were constructed to model more complex structures of ZnS-based alpha detection sheets (EJ-440) from Eljen Technology. Optical parameters validated with experimental results have been used in radiation simulation in Geant4. This study will serve as a basis for our ongoing effort to optimize and manufacture an efficient and compact fast neutron detection module with microand nano-structures.Logoglu FarukAlbert PatrickWolfe DouglasFlaska MarekEDP Sciencesarticlespectroscopygeant4optimizationneutron detectorsscintillationPhysicsQC1-999ENEPJ Web of Conferences, Vol 253, p 11010 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	spectroscopy geant4 optimization neutron detectors scintillation Physics QC1-999
spellingShingle	spectroscopy geant4 optimization neutron detectors scintillation Physics QC1-999 Logoglu Faruk Albert Patrick Wolfe Douglas Flaska Marek Experimental and Simulation Investigation of Micro- and Nano-Structured Neutron Detectors
description	We are investigating different micro- and nano-structure approaches to neutron detection based on inorganic scintillators. Specifically, we have been assessing various neutron converter-scintillator configurations through simulations and experiments. One promising inorganic scintillator is ZnO due to its relatively high light yield[1], reasonable optical transparency in the visible region[2], and relatively low refractive index[3] compared to other Zn-based crystals such as ZnS[4]. Accurate optical data and rigid simulation tools are necessary to optimize the dimensions of the neutron converter/scintillator systems. Accurate optical data are necessary since the optical parameters of a material depend on a variety of factors, including but not limited to its morphology, crystal structure, surface quality (surface roughness), as well as the temperature at which it was manufactured. Therefore, literature data show significant discrepancy when it comes to the optical parameters for the material and it is important to accurately measure these quantities for the specific sample of interest. Neutron detection is a complex process that includes neutron transport, charged particle transport, and light transport in the active detection medium. Hence, a rigid simulation tool is required to handle all these different areas of physics with sufficient accuracy. In this work, Geant4 has been chosen to carry out the simulations of these processes. Geant4 (GEometry ANd Tracking) is a toolkit used in various applications including high energy physics, astrophysics, and radiation detection[5]. The optical simulation capabilities of Geant4 have been validated by comparing the transmission and reflection data from UV-Vis spectroscopy to the Geant4 models for different Zn-based crystals. After validating the optical response of single crystals, simulation models were constructed to model more complex structures of ZnS-based alpha detection sheets (EJ-440) from Eljen Technology. Optical parameters validated with experimental results have been used in radiation simulation in Geant4. This study will serve as a basis for our ongoing effort to optimize and manufacture an efficient and compact fast neutron detection module with microand nano-structures.
format	article
author	Logoglu Faruk Albert Patrick Wolfe Douglas Flaska Marek
author_facet	Logoglu Faruk Albert Patrick Wolfe Douglas Flaska Marek
author_sort	Logoglu Faruk
title	Experimental and Simulation Investigation of Micro- and Nano-Structured Neutron Detectors
title_short	Experimental and Simulation Investigation of Micro- and Nano-Structured Neutron Detectors
title_full	Experimental and Simulation Investigation of Micro- and Nano-Structured Neutron Detectors
title_fullStr	Experimental and Simulation Investigation of Micro- and Nano-Structured Neutron Detectors
title_full_unstemmed	Experimental and Simulation Investigation of Micro- and Nano-Structured Neutron Detectors
title_sort	experimental and simulation investigation of micro- and nano-structured neutron detectors
publisher	EDP Sciences
publishDate	2021
url	https://doaj.org/article/44603ed6652f4dee8bf7c345f82107d3
work_keys_str_mv	AT logoglufaruk experimentalandsimulationinvestigationofmicroandnanostructuredneutrondetectors AT albertpatrick experimentalandsimulationinvestigationofmicroandnanostructuredneutrondetectors AT wolfedouglas experimentalandsimulationinvestigationofmicroandnanostructuredneutrondetectors AT flaskamarek experimentalandsimulationinvestigationofmicroandnanostructuredneutrondetectors
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Experimental and Simulation Investigation of Micro- and Nano-Structured Neutron Detectors

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