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Ionizing radiation sensor unit for nanosatellite applications
Thomas, Kelsey Jayde. 2025. Ionizing radiation sensor unit for nanosatellite applications. Unpublished master's thesis. Stellenbosch: Stellenbosch University [online]. Available: https://scholar.sun.ac.za/handle/10019.1/131934
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| Format: | Thesis |
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Stellenbosch : Stellenbosch University
2025
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| _version_ | 1867613765519802368 |
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| access_status_str | Open Access |
| author | Thomas, Kelsey Jayde |
| author2 | Barnard, Arno |
| author_browse | Barnard, Arno Thomas, Kelsey Jayde |
| author_facet | Barnard, Arno Thomas, Kelsey Jayde |
| author_sort | Thomas, Kelsey Jayde |
| collection | Thesis |
| dc_rights_str_mv | Stellenbosch University |
| description | Thomas, Kelsey Jayde. 2025. Ionizing radiation sensor unit for nanosatellite applications. Unpublished master's thesis. Stellenbosch: Stellenbosch University [online]. Available: https://scholar.sun.ac.za/handle/10019.1/131934 |
| format | Thesis |
| id | oai:scholar.sun.ac.za:10019.1/131934 |
| institution | Stellenbosch University (South Africa) |
| last_indexed | 2026-06-10T12:41:20.497Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from SUNScholar — Stellenbosch University Repository |
| publishDate | 2025 |
| publishDateRange | 2025 |
| publishDateSort | 2025 |
| publisher | Stellenbosch : Stellenbosch University |
| publisherStr | Stellenbosch : Stellenbosch University |
| record_format | dspace |
| source_str | SUNScholar — Stellenbosch University Repository |
| spelling | oai:scholar.sun.ac.za:10019.1/131934 Ionizing radiation sensor unit for nanosatellite applications Thomas, Kelsey Jayde Barnard, Arno Stellenbosch University. Faculty of Engineering. Dept. of Electrical and Electronic Engineering. Ionizing radiation Nanosatellites -- Attitude control systems Aeronautical instruments UCTD Thomas, Kelsey Jayde. 2025. Ionizing radiation sensor unit for nanosatellite applications. Unpublished master's thesis. Stellenbosch: Stellenbosch University [online]. Available: https://scholar.sun.ac.za/handle/10019.1/131934 Thesis (MEng)--Stellenbosch University, 2025. ENGLISH ABSTRACT: This thesis details the development of an ionizing radiation sensor unit for nanosatellite applications. The design utilises Commercial-Off-The-Shelf (COTS) components to measure fluence and Total Ionizing Dose (TID). The CY62157EV30LL-45ZXI Static Random Access Memory (SRAM) is selected as the fluence sensor and the IRF9510 Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET) for the TID sensor. The design of the sensor unit and the experimental setups were optimised through simulations and testing. TID testing was conducted using a Cobalt-60 source at Agricultural Research Council (ARC). The SRAM underwent Single Event Effects (SEE) testing using 27 MeV to 56 MeV protons at iThemba Laboratories for Accelerator Based Science (LABS). The SRAM was characterised through detailed analysis of the radiation-induced errors, finding a maximum cross-section of 1.65E-11 cm2/bit. The MOSFET showed a linear response to increasing total dose. Additionally, the sensor unit includes system health monitoring capabilities. This research demonstrates the feasibility of using COTS components as effective ionizing radiation sensors for space applications. AFRIKAANSE OPSOMMING: Hierdie tesis beskryf die ontwikkeling van ’n ioniserende straling sensor eenheid vir nanosatellite toepassings. Die ontwerp gebruik Kommersie¨el-van-die-Rak-Komponente (KARK) (Eng: Commercial-Off-The-Shelf (COTS)) om vloed en Totale Ioniserende Dosis (Eng: TID) te meet. Die CY62157EV30LL-45ZXI SRAM word gekies as die vloed sensor en die IRF9510 MOSFET vir die TID-sensor. Die ontwerp van die sensoreenheid en die eksperimentele opstellings is geoptimeer deur simulasies en toetsing. TID-toetsing is uitgevoer met behulp van ’n Cobalt-60-bron by die Agricultural Research Council (ARC). Die SRAM het Enkel Gebeurtenis Effek (EGE) (Eng: SEE)toetsing ondergaan deur 27 MeV tot 56 MeV-protone by iThemba LABS te gebruik. Die SRAM is gekenmerk deur gedetailleerde ontleding van die straling-ge¨ınduseerde foute, wat ’n maksimum deursnee van 1.65E-11 cm2/bit gevind het. Die MOSFET het ’n lineˆere reaksie op toenemende totale dosis getoon. Addisioneel bevat die sensor-eenheid stelsel gesondheid moniterings vermo¨ens. Hierdie navorsing demonstreer die uitvoerbaarheid van die gebruik van COTS-komponente as effektiewe ioniserende stralingsensors vir ruimte toepassings. Masters 2025-04-29T11:52:57Z 2025-04-29T11:52:57Z 2025-03 Thesis https://scholar.sun.ac.za/handle/10019.1/131934 Stellenbosch University x, 147 pages : illustrations application/pdf Stellenbosch : Stellenbosch University |
| spellingShingle | Ionizing radiation Nanosatellites -- Attitude control systems Aeronautical instruments UCTD Thomas, Kelsey Jayde Ionizing radiation sensor unit for nanosatellite applications |
| title | Ionizing radiation sensor unit for nanosatellite applications |
| title_full | Ionizing radiation sensor unit for nanosatellite applications |
| title_fullStr | Ionizing radiation sensor unit for nanosatellite applications |
| title_full_unstemmed | Ionizing radiation sensor unit for nanosatellite applications |
| title_short | Ionizing radiation sensor unit for nanosatellite applications |
| title_sort | ionizing radiation sensor unit for nanosatellite applications |
| topic | Ionizing radiation Nanosatellites -- Attitude control systems Aeronautical instruments UCTD |
| url | https://scholar.sun.ac.za/handle/10019.1/131934 |
| work_keys_str_mv | AT thomaskelseyjayde ionizingradiationsensorunitfornanosatelliteapplications |