Measurement of the proton flux and variability in low earth orbit with the alpha magnetic spectrometer

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2019

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Konak, Çağlar

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AMS-02 is a general purpose high energy particle detector, installed on the International Space Station on 19 May 2011 to detect dark matter and primordial anti-matter as well as measure the cosmic particles with unprecedented statistics. AMS-02 has a unique design including a powerful magnet, large acceptance with prolonged exposure time. Protons are the most abundant charged particles among other cosmic rays above a few 100s MeV. An understanding of precise behaviour of them accounts for the origin, acceleration and propagation of cosmic rays. The work presented in this thesis consists of two parts, measurement of proton flux and its variability in low Earth orbit. In the first part, the proton flux analysis based on 5 years of data recorded by the AMS-02 was performed with a geomagnetic cutoff in order to eliminate the trapped flux. The second part of manuscript is about the variability of the proton flux in low Earth orbit specifically the alterations during the solar maximum in April 2014.

Subject Keywords

Orbits., Protons., Cosmic rays., Magnetic spectrometer.

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http://etd.lib.metu.edu.tr/upload/12623058/index.pdf
https://hdl.handle.net/11511/27957

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Graduate School of Natural and Applied Sciences, Thesis

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Citation Formats

Ç. Konak, “Measurement of the proton flux and variability in low earth orbit with the alpha magnetic spectrometer,” M.S. - Master of Science, Middle East Technical University, 2019.