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The antimatter hunter
The Space Shuttle will deliver the second Alpha Magnetic Spectrometer (AMS-02), a state-of-the-art cosmic-ray detector designed to examine fundamental properties of matter and the origin of the Universe. Complementing the work of the Large Hadron Collider, scientists are looking for a better understanding of antimatter and dark matter.
Already dubbed the Hubble Space Telescope of cosmic rays, AMS-02 will collect primary cosmic rays that, after travelling for hundreds of millions of light years, will be accelerated by strong magnetic fields.
AMS-02 will not only be the largest and most complex scientific instrument to be installed on the ISS – its magnetic field is 4000 times stronger than Earth’s – but it is the largest international collaboration on a single experiment in space.
| “The most exciting objective of AMS is to probe the unknown; to search for phenomena which exist in nature that we have not yet imagined nor had the tools to discover.” - Samuel Ting |
The ISS is a unique platform. The stability, lengthy exposure and the possibility of onboard refurbishment make the ISS the ideal platform for the experiment. The Station is able to provide the resources required by AMS-02 (downlink, power, exposure time and reboost capability), which would be much harder to get on a free-flying satellite.
The multinational AMS project is led by Nobel Prize Laureate Samuel Ting, with significant European participation coordinated by Prof. Roberto Battiston. The success has been mostly built by institutes in Italy, France, Germany, Spain, Portugal and Switzerland, together with the participation of US, China, Russia and Taiwan. In all, the experiment’s team consists of 56 institutes from 16 countries.
Orbiting Earth on the ISS at an altitude of about 300 km, AMS-02 will study with an unprecedented accuracy of one part in 10 billion the composition of primary cosmic rays, exploring a new frontier in particle physics, searching for primordial antimatter and studying the nature of dark matter.
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