Cold Antimatter Plasmas, and Aspirations for Cold Antihydrogen
Final rept. 15 Apr 2001-31 Mar 2002
HARVARD UNIV CAMBRIDGE MA DEPT OF PHYSICS
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Only our ATRAP Collaboration is yet able to accumulate and store 4.2 K antiprotons and positrons. The antiprotons come initially from the new Antiproton Decel- erator facility at CERN. Good control of such cold antimatter plasmas is key to aspirations to produce and study antihydrogen atoms that are cold enough to confine by their magnetic moments. In the closest approach to cold antihydrogen realized to date the cold positrons have been used to cool antiprotons the first time that positron cooling has ever been oh- served. The Penning-Ioffe trap, one possibility for simultaneously confining antihydrogen and the cold ingredients from which it is formed, is introduced and discussed.
- Nuclear Physics and Elementary Particle Physics
- Plasma Physics and Magnetohydrodynamics