A 6.4 T superconducting wavelength shifter for the generation of hard X-rays at the Siam Photon Source

The Siam Photon Source plans to provide hard X-rays to synchrotron radiation users specifically those in the fields of macromolecular crystallography and X-ray absorption fine-structure spectroscopy. In order to generate synchrotron radiation in the hard X-ray spectral range from a low-energy (1.2 GeV) electron storage ring, installation of a high-field superconducting insertion device is necessary. A warm-bore superconducting magnet wavelength shifter, which was given to NSRC by MAX-LAB, Sweden, will be inserted into the storage ring in the middle of a straight section. The magnet consists of three pairs of iron-cored superconducting NbTi coils with a nominal peak field of 6.4 T. This report will discuss the characteristics of the WLS, the beam dynamics effects of the wiggler on the SPS storage ring optics and the necessary compensations, as well as radiation properties and radiation masking.