The ATRAP collaboration at CERN developed out of TRAP, a collaboration whose members pioneered cold antiprotons, cold positrons, and first made the ingredients of cold antihydrogen to interact. ATRAP members also pioneered accurate hydrogen spectroscopy and first observed hot antihydrogen atoms. The collaboration includes investigators from Harvard, the University of Bonn, the Max Planck Institute for Quantum Optics, the University of Amsterdam, York University, Seoul National University, NIST, Forschungszentrum Jülich.

External links

• http://hussle.harvard.edu/~atrap/