Sökning: "Diamond detector"

Hittade 2 uppsatser innehållade orden Diamond detector.

  1. 1. Dosimetric Characteristics of CVD Single Crystal Diamond Detectors in Radiotherapy Beams

    Uppsats för yrkesexamina på grundnivå, Stockholms universitet/Medicinsk strålningsfysik (tills m KI)

    Författare :Anna Ärlebrand; [2008]
    Nyckelord :Diamond detector; CVD; Priming dose;

    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. 2. Determination of the effective volume of a detector

    Uppsats för yrkesexamina på grundnivå, Stockholms universitet/Medicinsk strålningsfysik (tills m KI)

    Författare :Jonas Grafström; [2007]
    Nyckelord :Gamma knife; Semi conductor; Detector; Effective volume; 60Co;

    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