Status of the CP LEAR experiment and first results

The aim of the CP LEAR experiment is to study symmetry-violation effects, making use of tagged K0's and K0's. The detector, although missing some electronic components, has been operational for a few weeks at the end of 1989 at the CERN Low-Energy Antiproton Ring (LEAR). At the moment, the analysis of the data is in progress. This paper gives a description of the experimental method and of the detector; the sensitivities of some measurements and some preliminary results are also discussed.