Abstract
The exact behavior of nuclei fluxes in cosmic rays and how they relate to each other is important for understanding the production, acceleration and propagation mechanisms of charged cosmic rays. Precise measurements with the Alpha Magnetic Spectrometer on the International Space Station of light nuclei fluxes and their ratios in primary cosmic rays with rigidities from GV to TV are presented. The high statistics of the measurements require detailed studies and in depth understanding of associated systematic uncertainties.
Highlights
The Alpha Magnetic Spectrometer (AMS) is a multi-purpose magnetic spectrometer measuring cosmic rays up to TeV energies on the International Space Station (ISS)
The AMS detector [1] consists of a transition radiation detector (TRD) [2], a silicon tracker [3], a permanent magnet, a Time-of-Flight detector (TOF) [4], a Ring Imaging Cherenkov detector (RICH) [5] and an electromagnetic calorimeter (ECAL) [6]
In order to increase the statistics of the measurement for Z>2 nuclei, for rigidities below 1 TV we analysed particles crossing only tracker planes L1 to L8 by which we gain a significant increase in acceptance
Summary
The Alpha Magnetic Spectrometer (AMS) is a multi-purpose magnetic spectrometer measuring cosmic rays up to TeV energies on the International Space Station (ISS). The AMS detector [1] consists of a transition radiation detector (TRD) [2], a silicon tracker [3], a permanent magnet, a Time-of-Flight detector (TOF) [4], a Ring Imaging Cherenkov detector (RICH) [5] and an electromagnetic calorimeter (ECAL) [6]. With these detectors AMS identifies particles and nuclei by redundant measurements of their charge and energy or momentum. To match these statistics, detailed systematic error studies are important
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