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1. Dosimetric Characteristics of CVD Single Crystal Diamond Detectors in Radiotherapy Beams
Uppsats för yrkesexamina på grundnivå, Medicinsk strålningsfysik (tills m KI)Sammanfattning : Dosimetric characteristics of a CVD single crystal diamond detector have been evaluated. Detector stability, linearity, optimal bias, temperature dependence, directional dependence, priming and pre-irradiation behaviour, depth dose curves and dose profiles were investigated. The optimal bias was determined to be 50 V. LÄS MER
2. Determination of the effective volume of a detector
Uppsats för yrkesexamina på grundnivå, Medicinsk strålningsfysik (tills m KI)Sammanfattning : A method to establish the boundaries of the sensitive volume for a chosen detector to within 50µm (as specified by Elekta Instuments AB) was investigated and is presented in this project. The detector studied was fixed to a positioning system with possibility to move with sub micrometer increments, and scanned in a narrow photon field. LÄS MER