Antiproton Studies of Mass Spectroscopy.
Final rept. 1 Apr 93-31 Aug 96,
HARVARD UNIV CAMBRIDGE MA DEPT OF PHYSICS
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The precise mass comparison of the antiproton and proton is a very important scientific test, being the most stringent test of CPT invariance for a baryon system. This scientific objective has led CERN, the nuclear and particle physics laboratory of Europe, to provide a unique access to the worlds exceedingly limited supply of antiprotons. Pursuit of this scientific goal has made possible the development of techniques to slow and cool antiprotons, reducing their energy by a factor of 10,000,000,000 and also development of techniques for capturing, storing, and accumulating large numbers of antiprotons. The nondestructive containment of antimatter in a small volume has thus now been clearly demonstrated. based on the many things learned in this series of experiments, the focus is now on increasing the number of trapped antiprotons. During this past year there has also been success in accumulating and storing positrons in much larger numbers, in a trap environment very similar to that used for storing antiprotons. The hope now is to combine the low energy antiprotons and the low energy positrons to make antimatter atoms for the first time. Test experiments with electrons and protons are encouraging.
- Nuclear Physics and Elementary Particle Physics