ATHENA
ATHENA is an antimatter research project that is taking place at the AD Ring at CERN. In 2002, it was the first experiment to produce 50,000 low-energy antihydrogen atoms, as reported in the journal Nature[1].
The experiment
For antihydrogen to be created, antiprotons and positrons must first be prepared. Once the antihydrogen is created, a high-resolution detector is needed to confirm that the antihydrogen was created, as well as to look at the spectrum of the antihydrogen in order to compare it to "normal" hydrogen[2].
The antiprotons are obtained from CERN's Antiproton Decelerator while the positrons are obtained from a positron accumulator. The antiparticles are then led into a recombination trap to create antihydrogen. The trap is surrounded by the ATHENA detector, which detects the annihilation of the antiprotons as well as the positrons.
Collaboration
The ATHENA Collaboration comprised the following institutions[3]:
- University of Aarhus, Denmark
- University of Brescia, Italy
- CERN
- University of Genoa, Italy
- University of Pavia, Italy
- RIKEN, Japan
- Federal University of Rio de Janeiro, Brazil
- University of Wales Swansea, United Kingdom
- University of Tokyo, Japan
- University of Zurich, Switzerland
- National Institute for Nuclear Physics, Italy
References
- ^ http://press.web.cern.ch/press/PressReleases/Releases2002/PR09.02Eantihydrogen.html Antihydrogen production press release by CERN
- ^ http://athena-positrons.web.cern.ch/ATHENA-positrons/wwwathena/overview.html Summary of how the ATHENA experiment works
- ^ http://athena-positrons.web.cern.ch/ATHENA-positrons/wwwathena/collaboration.html ATHENA Collaboration
See also
External links
This entry is from Wikipedia, the leading user-contributed encyclopedia. It may not have been reviewed by professional editors (see full disclaimer)
