Application of an SOI microdosimeter for monitoring of neutrons in various mixed radiation field environments

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dc.contributor.authorPan, VAen_AU
dc.contributor.authorVohradsky, Jen_AU
dc.contributor.authorJames, Ben_AU
dc.contributor.authorPagani, Fen_AU
dc.contributor.authorChartier, Len_AU
dc.contributor.authorDebrot, Een_AU
dc.contributor.authorPastuovic, Zen_AU
dc.contributor.authorCutajar, Den_AU
dc.contributor.authorPoder, Jen_AU
dc.contributor.authorNancarrow, Men_AU
dc.contributor.authorPereloma, Een_AU
dc.contributor.authorBolst, Den_AU
dc.contributor.authorLee, SHen_AU
dc.contributor.authorInaniwa, Ten_AU
dc.contributor.authorSafavi-Naeini, Men_AU
dc.contributor.authorProkopovich, DAen_AU
dc.contributor.authorGuatelli, Sen_AU
dc.contributor.authorPetasecca, Men_AU
dc.contributor.authorLerch, MLFen_AU
dc.contributor.authorPovoli, Men_AU
dc.contributor.authorKok, Aen_AU
dc.contributor.authorTran, LTen_AU
dc.contributor.authorRosenfeld, ABen_AU
dc.date.accessioned2025-01-12T23:26:09Zen_AU
dc.date.available2025-01-12T23:26:09Zen_AU
dc.date.issued2022-03-01en_AU
dc.date.statistics2024-10-23en_AU
dc.description.abstractRadiation monitoring in space radiation is complex due to galactic cosmic rays (GCRs), solar particle events (SPEs), and albedo particles. Thermal neutrons are an important component in the Moon radiation albedo field which can cause single event upset (SEU) in electronics when they interact with the 10 B present in electronic components. In this work, we studied an application of silicon on insulator (SOI) microdosimeters for neutron monitoring in various mixed radiation field environments. A 10- μm SOI microdosimeter was utilized in conjunction with a 10 B 4 C thin-film converter to successfully measure the thermal neutron contribution out of field of a therapeutic proton beam as well as an 18-MV X-ray linear accelerator (LINAC). The microdosimeter was placed downstream of the Bragg peak (BP) as well as laterally out of field of the proton beam and at two positions along the treatment couch of the 18-MV LINAC. It was demonstrated that the 10- μm SOI microdosimeter with 10 B 4 C converter is suitable for detection of thermal neutrons with excellent discrimination of gamma, fast and thermal neutron components in the presence of a gamma-neutron pulsed field of an 18-MV LINAC. To reduce the gamma contribution and further improve detection of neutrons in mixed radiation fields, a new 2 μm Mushroom-planar microdosimeter was fabricated and characterized in detail using an ion beam induced charge collection (IBIC) technique with 1.78 MeV He2+ ions. It was demonstrated that this 2 μm SOI microdosimeter can be operated in a passive mode. The SOI microdosimeter with the 10 B 4 C converter can be recommended for the detection of thermal neutrons for SEU prediction in the mixed gamma-neutron fields during space missions, especially for the Moon mission.© Copyright 2025 IEEEen_AU
dc.identifier.citationPan, V. A., Vohradsky, J., James, B., Pagani, F., Chartier, L., Debrot, E., Pastuovic, Z., Cutajar, D., Poder, J., Nancarrow, M., Pereloma, E., Bolst, D., Lee, S. H., Inaniwa, T., Safavi-Naeini, M., Prokopovich, D., Guatelli, S., Petasecca, M., Lerch, M. Povoli, M., Kok, A., Tran, L. T., & Rosenfeld, A. B. (2022). Application of an SOI microdosimeter for monitoring of neutrons in various mixed radiation field environments. IEEE Transactions on Nuclear Science, 69(3), 491-500. doi.:10.1109/TNS.2021.3125999en_AU
dc.identifier.issn0018-9499en_AU
dc.identifier.issn1558-1578en_AU
dc.identifier.issue3en_AU
dc.identifier.journaltitleIEEE Transactions on Nuclear Scienceen_AU
dc.identifier.pagination491-500en_AU
dc.identifier.urihttps://doi.org/10.1109/tns.2021.3125999en_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/15913en_AU
dc.identifier.volume69en_AU
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)en_AU
dc.subjectNeutronsen_AU
dc.subjectRadiationsen_AU
dc.subjectCosmic ray detectionen_AU
dc.subjectParticlesen_AU
dc.subjectMoonen_AU
dc.subjectSiliconen_AU
dc.subjectProton beamsen_AU
dc.subjectThermal neutronsen_AU
dc.subjectLinear acceleratorsen_AU
dc.subjectBoronen_AU
dc.subjectAustraliaen_AU
dc.subjectIonsen_AU
dc.subjectBridgesen_AU
dc.titleApplication of an SOI microdosimeter for monitoring of neutrons in various mixed radiation field environmentsen_AU
dc.typeJournal Articleen_AU
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