Würzburg 2018 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 7: Kosmische Strahlung I

T 7.10: Vortrag

Montag, 19. März 2018, 18:20–18:35, Philo-HS7

Large Acceptance Analysis of Electrons and Positrons with AMS-02 — •Fabian Machate — RWTH Aachen, Aachen, Germany

The Alpha Magnetic Spectrometer (AMS-02) on the International Space Station performs precision measurements of cosmic rays in the GeV to TeV energy range. The published analyses of the electron and positron fluxes rely on the electromagnetic calorimeter (ECAL) for energy measurements and background rejection. The geometrical acceptance for the conventional analyses is restricted by the weight limitations for the calorimeter.

A new method to reject background with a Multivariate Analysis (MVA) using information from the Transition Radiation Detector (TRD) will be presented. This analysis has a significantly larger geometrical acceptance and can increase the statistics by a factor of up to  ∼ 4 .