News & Views
AMS experiment marks one year in space
Aug 29 2012
CERN marked the Alpha Magnetic Spectrometer's first year in space with a visit from the crew of the shuttle mission, STS-134, that successfully delivered AMS to the International Space Station (ISS) just over a year ago. Launched on 16 May last year, the detector was already sending data back to Earth by 19 May, and since then, some 17 billion cosmic-ray events have been collected. Data are received by NASA in Houston, and then relayed to the AMS Payload Operations Control Centre (POCC) at CERN for analysis. A second POCC has recently been inaugurated in Taipei.
"The AMS detector has so far achieved everything we expected of it," said Nobel laureate and AMS spokesperson Samuel Ting. "That's a great credit to the team that put the detector together, and the team that installed it on the ISS. We're honoured to have them here today to celebrate AMS's fist year in space."
The STS-134 mission was the last flight for space shuttle Endeavour, crewed by commander Mark Kelly, pilot Gregory H. Johnson and mission specialists Michael Fincke, Greg Chamitoff, Andrew Feustel and European Space Agency (ESA) astronaut Roberto Vittori. The AMS detector's first year in space has been a learning curve: data have been used to calibrate the detector and fully understand its performance in the extreme thermal conditions encountered in space.
"Among AMS's achievements is that for the first time, we've been able to identify electrons with energies exceeding 1 TeV before they enter the atmosphere," said Ting. "This holds out great promise for the AMS research programme that's now getting underway."
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