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    A state-of-the-art particle detector installed on the International Space Station.

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    Latest Physics Topic

    Antiprotons from Beyond the Solar System

    Figure 2: The antiproton flux recorded by the AMS reflects the 11-year cycle of solar activity. The lowest-energy particles exhibit the greatest variation because they are most affected by drifts induced by the heliosphere’s magnetic fields.

    N. Eugene Engelbrecht and …

    • Physics

      • Antiprotons from Beyond the Solar System

      • Research group unveils properties of cosmic-ray sulfur and the composition of other primary cosmic rays

      • Disentangling the Sun’s Impact on Cosmic Rays

      • Ironing Out Cosmic Rays

      • Primary Neon, Magnesium, and Silicon Fluxes

      • Properties of Helium Isotopes

      • Origin of Cosmic-Ray Positrons

      • Origin of Cosmic-Ray Electrons

      • Boron to Carbon Flux Ratio

      • Identical Rigidity Dependence of He, C and O

      • New Properties of Secondary Cosmic Rays Li, Be and B

      • Nitrogen and its Primary and Secondary Components

      • Fine Time Structures in the Cosmic Proton and Helium

      • Complex Time Structures in Cosmic-Ray Electron and Positron Fluxes

    • Publications

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    • Advances in the Data Analysis

      • Tracker: Charge Sign Identification

      • Tracker: Coordinate Measurement

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      • Tracker: Track Finding Efficiency

      • Tracker: Rigidity Resolution at Low Rigidities

      • Tracker: Charge Resolution

      • ECAL: New Reconstruction Method

      • ECAL: Energy Reconstruction

      • ECAL: Proton Rejection

      • Measurements of Nuclei Cross Sections with cosmic rays

  • News & Events

    Media Reports:

    • This strange discovery in space could finally unlock the mystery of dark matter
      October 4, 2024
      (BBC Science Focus)
    • Traces of antimatter in cosmic rays reopen the search for 'WIMPs' as dark matter
      October 4, 2024
      (phys.org)
    • This Could Be the Closest We’ve Ever Been to Detecting Dark Matter
      October 4, 2024
      (Popular Mechanics)

    View all media reports

    • AMS Days

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      • AMS Session on COSPAR2018

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  1. The AMS Collaboration
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Xiaowei Tang

Institute
IHEP, Institute of High Energy Physics, Chinese Academy of Sciences
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