IKP, Mainz, Germany
The Mainz Energy recovering Superconducting Accelerator (MESA) is now being set up at the institute für Kernphysik, university of Mainz. MESA is intended to serve as a test bed for multi-turn superconducting ERL's. It also has a strong fundamental physics component, since electron scattering from a "pseudo" internal target will provide a new regime of experimental research. On the other hand, MESA may also be operated as a conventional c.w. accelerator with polarized external beam. The latter mode is foreseen to be used for a precision measurement of the Weinberg angle. The project is still in its conceptional phase, different options for r.f.-systems and lattices will be presented.
