Superconducting 'snake' for the dedicated SR source Siberia-1

The storage ring Siberia-1 was put into operation as a dedicated source of synchrotron radiation at the Kurchatov Institute (Moscow) in 1983. It was designed and built at the Institute of Nuclear Physics (Novosibirsk). The critical wavelength of the radiation from the bending magnets with an electron beam in the Siberia-1 of E=450 MeV is lambdasub(c)=61A. This radiation has been used for experiments since 1985. In May 1985 the radiation with lambdasub(c)=21A was obtained from three-pole superconducting snake. The maximum field on the beam orbit is 4.3 T. In the present paper the design of the snake magnet and its arrangement in the storage ring are presented as well as the results of the stand test and of the study concerning the influence of the snake on the particle motion in the storage rings. (orig.)