Operational experience with the DA/spl Phi/NE radio-frequency systems

The RF systems of the Frascati double ring (e/sup +//e/sup -/) /spl Phi/-Factory DA/spl Phi/NE are fully operative since the autumn 1997. The RF complex consists of one 73.65 MHz system for the damping ring and one 368.26 MHz system per each ring. The accelerating cavities are room-temperature single cell copper resonators, broadband loaded by waveguides to reduce the impedances of their High Order Modes and, consequently, the coupled-bunch instability growth rates. The main operational features of the DA/spl Phi/NE radiofrequency systems are reported in this article, including the performances observed under heavy beam loading conditions.