SUPERCONDUCTING 7.5 TESLA WIGGLER FOR PLS

The construction of a dedicated SR source - the 2 GeV PLS - is being completed in Korea. The superconducting 3-pole wiggler (the wavelength shifter) with a 7.5 T maximum field at the central pole, which is to be installed at the PLS storage ring, was manufactured by the Budker Institute of Nuclear Physics (Novosibirsk) in cooperation with the PLS Laboratory (POSTECH, Pohang), The magnetic field at the side poles does not exceed 1.7 T in order to suppress the second source in the hard spectral region. The basic parameters of the wiggler and the radiation properties are given. Preliminary results of the wiggler testing in a special immersed cryostat are presented.X1112sciescopu