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

Download

index.pdf

Date

2019

Author

Konak, Çağlar

Metadata

Show full item record

Item Usage Stats

416
views

189
downloads

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.

URI

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

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

Measurement of the charge ratio of atmospheric muons with the CMS detector Khachatryan, V.; et. al. (Elsevier BV, 2010-08-01) We present a measurement of the ratio of positive to negative muon fluxes from cosmic ray interactions in the atmosphere, using data collected by the CMS detector both at ground level and in the underground experimental cavern at the CERN LHC. Muons were detected in the momentum range from 5 GeV/c to 1 TeV/c. The surface flux ratio is measured to be 1.2766 +/- 0.0032 (stat.) +/- 0.0032 (syst.), independent of the muon momentum, below 100 GeV/c. This is the most precise measurement to date. At higher momenta...
Measurement of helium flux and variability in low earth orbit with the Alpha Magnetic Spectrometer Karagöz, Gülce; Demirköz, Melahat Bilge; Department of Physics (2022-2) The Alpha Magnetic Spectrometer (AMS-02) is an unrivalled particle physics detec- tor with a large magnet whose aim is to search for anti-matter and dark matter by performing measurements on cosmic ray composition and flux. AMS-02 has been operating on the International Space Station (ISS) since its launch on the 16th May 2011, and is planned to operate along the lifetime of the ISS. AMS-02 has a unique design with a large acceptance and sensitive detection of cosmic rays, allowing one to better understand ...
Measurement of the top quark pair cross section with ATLAS in pp collisions at root s=7 TeV using final states with an electron or a muon and a hadronically decaying tau lepton Aad, G.; et. al. (Elsevier BV, 2012-10-22) A measurement of the cross section of top quark pair production in proton-proton collisions recorded with the ATLAS detector at the Large Hadron Collider at a centre-of-mass energy of 7 TeV is reported. The data sample used corresponds to an integrated luminosity of 2.05 fb(-1). Events with an isolated electron or muon and a tau lePton decaying hadronically are used. In addition, a large missing transverse momentum and two or more energetic jets are required. At least one of the jets must be identified as o...
Measurement of the W charge asymmetry in the W -> mu nu decay mode in pp collisions at root s=7 TeV with the ATLAS detector Aad, G.; et. al. (Elsevier BV, 2011-06-27) This Letter reports a measurement of the muon charge asymmetry from W bosons produced in proton-proton collisions at a centre-of-mass energy of 7 TeV with the ATLAS experiment at the LHC. The asymmetry is measured in the W -> mu nu decay mode as a function of the muon pseudorapidity using a data sample corresponding to a total integrated luminosity of 31 pb(-1). The results are compared to predictions based on next-to-leading order calculations with various parton distribution functions. This measurement pr...
Measurement of underlying event characteristics using charged particles in pp collisions at root s = 900 GeV and 7 TeV with the ATLAS detector Aad, G.; et. al. (American Physical Society (APS), 2011-05-31) Measurements of charged particle distributions, sensitive to the underlying event, have been performed with the ATLAS detector at the LHC. The measurements are based on data collected using a minimum-bias trigger to select proton-proton collisions at center-of-mass energies of 900 GeV and 7 TeV. The "underlying event'' is defined as those aspects of a hadronic interaction attributed not to the hard scattering process, but rather to the accompanying interactions of the rest of the proton. Three regions are d...

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.