The RF cavity for DA/spl Phi/NE

The achievement of the highest luminosity in the 510 MeV electron-positron /spl Phi/-Factory DA/spl Phi/NE, in construction at Frascati Laboratories, requires a careful design of the RF accelerating cavity, being the main source of High Order parasitic Modes (HOM) which are responsible for multibunch instabilities. Intense R&D has been carried out to choose the cavity resonator which would better cope with those problems. Theoretical studies and simulations of the longitudinal beam dynamics with various cavity shapes have been performed and several HOM extraction and damping techniques have been studied and tested. This report presents the results of these investigations and the laboratory tests of the proposed accelerating RF cavity for DA/spl Phi/NE. >