Antiproton-proton mass comparison with a radio-frequency mass spectrometer
Abstract
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 overlinep and p by measuring the ratios of the cyclotron frequencies of overlinep 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 × 10 5 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.
- Publication:
-
Nuclear Instruments and Methods in Physics Research B
- Pub Date:
- August 1992
- DOI:
- 10.1016/0168-583X(92)95966-U
- Bibcode:
- 1992NIMPB..70..459D