Radiation environment predictions for the imece satellite and G4beamline simulations for the METU-DBL project

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Tezin Türü: Yüksek Lisans

Tezin Yürütüldüğü Kurum: Orta Doğu Teknik Üniversitesi, Fen Edebiyat Fakültesi, Fizik Bölümü, Türkiye

Tezin Onay Tarihi: 2017

Öğrenci: MERVE YİĞİTOĞLU

Danışman: MELAHAT BİLGE DEMİRKÖZ

Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu

Özet:

IMECE Satellite will be an Earth observation satellite in Low Earth Orbit (LEO) planned for launch after 2020. Electronic components of the IMECE Satellite will be exposed to a radiation environment in its orbit in space which consists mostly of relativistic charged particles. This radiation environment which can affect the performance and reliability of sensitive materials and electronics is studied using the SPENVIS program. After simulating the space radiation environment, sensitive electronic components and materials intended for space use must be tested to qualify as radiation tolerant components. Radiation effects can be categorized in three groups; Single Event Effects (SEE), Total Ionizing Dose (TID) and Non-Ionizing Dose Displacement Damage Effects. Currently, TID tests can be, but SEE tests cannot be conducted in Turkey. To perform SEE tests, a beam line is being constructed in the R&D room of the Turkish Atomic Energy Agency (TAEA) Sarayköy Nuclear Research and Training Center (SANAEM) Proton Accelerator Facility (PAF). The beam line will provide a final beam profile and energy that will satisfy the requirements of the ESA-ESCC No:25100 standard. To obtain a beam with the desired parameters, quadrupole magnets and collimators after scattering foils are employed. The radiation dose, received by various beamline elements, environment in the R&D room and especially the target area has been studied with a G4beamline simulation in detail in this thesis. Also, a preliminary study to perform radiation tests at the radiation doses relevant for nuclear reactors is presented.