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Status of 172 MHZ RF system for VEPP-2000 collider

Arbuzov V. S., Biryuchevsky Yu A., Bushuev A. A., Gorniker E. I., Kendjebulatov E. K., Kondakov A. A., Koop I. A., Krutikhin S. A., Kruchkov Ya G., Kuptsov I. V., Kurkin G. Ya, Mityanina N. V., Motygin S. V., Osipov V. N., Petrov V. M., Pilan A. M., Popov A. M., Prosvetov V. P., Rotov E. A., Sedlyarov I. K., Shatunov Yu M., Tribendis A. G., Volkov V. N., Volobuev S. V.

The description of storage ring VEPP-2000 RF system is given. The RF system consists of an RF generator with GU-101A tetrode in the output stage and with output power of 60 kW in CW mode, an accelerating cavity with higher order modes (HOM) damping and accelerating voltage of 120 kV and a control system providing tuning of RF cavity and control of accelerating voltage phase and amplitude. Detailed description of operation of automatic frequency tuning system of choke-filter, which prevents a leakage of RF power of the accelerating mode to one (of two) HOM dumper, and a system of automatic frequency tuning of cavity operating mode is given. Now the RF system is made, assembled and installed to the storage ring. The results of RF system commissioning are given.