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International Conference on Electromagnetic Isotope Separators and Techniques Related to their Applications 12, Sendai : Japan
Antiproton-proton mass comparison with a radio-frequency mass spectrometer
M. de Saint Simon1, A. Coc1, M. Jacotin1, J.F. Kepinski1, R. Le Gac1, G. Le Scornet1, C. Thibault1, F. Touchard1, H. Haebel, H. Herr, R. Klapisch, G. Lebee, G. Petrucci, G. Stefanini, H. Deitinghoff, A. Schempp, F. Botlo-Pilat

The experiment aims at the reduction of the upper limit on a hypothetical CPT violation in the antiproton-proton system. A radio-frequency mass spectrometer (RFMS) has been designed and built to make the comparison of the charge to mass ratios of Image and p by measuring the ratios of the cyclotron frequencies of Image and H− ions. At present, the RFMS is installed on-line to the LEAR facility at CERN. The resolving power has been found to be close to 3 × 105 and it still could be improved. A decelerating system (RFQ) has been installed in order to decelerate antiprotons from 2 MeV to 200 keV and to match as well as possible the acceptance of the spectrometer. It is presently under test and data taking should take place in 1992.
1 :  CSNSM - Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse
Physique/Physique/Instrumentations et Détecteurs