Development of a Planar Superconducting Undulator for the Advanced Photon Source

Superconducting technology offers the possibility of creating undulators for synchrotron light sources with better performance than conventional hybrid or pure permanent magnet technologies. A superconducting planar undulator is under development at the Advanced Photon Source (APS) with the goal of providing the APS users with higher photon fluxes at higher photon energies. A magnetic design has been developed and several short magnetic structure prototypes have been built. A phase error of less than 2 degrees rms has been achieved without any magnetic shimming. The team is now working on the manufacture of the first full-scale undulator for the APS. The results of the prototype tests are described in this paper. The designs for the superconducting magnet, the cooling system, and the cryostat are presented, as well as the status of the project.