Status of the RF system for the ANKA storage ring

The RF system for the ANKA storage ring has two plants, each plant consists of one 250 kW transmitter at 500 MHz feeding two cavities, with all the peripherals. The different components, namely the high voltage power supply, the klystron, the waveguide system and the cavities, are now under construction and test. The HV power supply is provided by Jager (Germany), and is been built on site. The first klystron, from the company EEV (England), has been assembled at the factory and the next two are under way. The components of the waveguide system have been already delivered by the firm Dielectric (USA), except the circulator that has been built by AFT (Germany). The factory acceptance tests of the cavities, together with the low level electronic systems, consisting of a frequency loop for each cavity and an amplitude and phase loop for each RF plant, have started at the end of 98 and, following the foreseen schedule, will be concluded in July 99 at Sincrotrone Trieste (Italy)