The AmPS ring: actual performance and future plans

The Amsterdam Pulse Stretcher AmPS is a 300-900 MeV electron storage ring with a circumference of 212 m. The ring operates either in stretcher mode to provide external continuous beams of tens of /spl mu/A or in storage mode with currents up to 200 mA for internal target experiments. Machine commissioning and simultaneous operation started for nuclear physics started mid 1992. The actual performance is presented. During 1995 a polarized electron source will be added to the linac injector. A "Siberian Snake" acting as a spin flipper will be implemented in the ring; these systems have been made by the Institute for Semiconductor Physics at the Budker Institute of Nuclear Physics both at Novosibirsk as part of a scientific collaboration agreement. Results from a feasibility study on the use of the ring as a free electron laser in the VUV region are also summarized.