The Kloe Detector and Physics Program

The KLOE detector, mainly designed to measure the R(ϵ′ϵ) parameter of CP violation in KL decay to an absolute precision of ≈ 10−4, is completed and will start data taking by spring 1999 at the e+ e− Φ-factory DAΦNE in Frascati. The primary K-meson physics and the experimental requirements at DAΦNE are summarized. The design strategies, the salient features and the main physics performances of all components of the experimental apparatus are reviewed.