Calorimetric mode photon analysis using the alpha magnetic spectrometer (AMS-02)

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Tezin Türü: Yüksek Lisans

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

Tezin Onay Tarihi: 2015

Öğrenci: CENK TÜRKOĞLU

Danışman: MELAHAT BİLGE DEMİRKÖZ

Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu

Özet:

Alpha Magnetic Spectrometer (AMS-02) is a particle detector built for the purpose of detecting primordial anti-matter and signals of dark matter. AMS-02 operates as an external module on the International Space Station and will be operational for at least 10 years. For finding traces of the strongest dark matter candidate, neutralino, peaks in the background positron, antiproton and gamma ray flux have to be studied. For this purpose, AMS-02 includes a permanent magnet that bends particles and anti-particles in opposite directions, a tracking system and high precision detectors (Transition Radiation Detector (TRD), Electromagnetic Calorimeter (ECAL)) which identifies electrons and positrons among other cosmic particles. There are two ways to do photon analysis: conversion mode and calorimetric mode. Conversion mode inludes the photons which start their showers in the upper parts of AMS-02 detector. In calorimetric mode, photons which convert into electron-positron pairs after entering Electromagnetic Calorimeter (ECAL) are taken into account. In this thesis, calorimetric photons will be studied above 5 GeV.