Design features of small electron ring for study of recirculating space-charge-dominated beams

Rapid-cycling rings and other recirculator systems operating with intense beams beyond the conventional space charge limit are of great interest for applications in heavy ion inertial fusion, high energy physics, spallation neutron sources, and other fields. There is very little theoretical or experimental knowledge that would allow us to make any predictions on the beam behavior in such novel systems. We are proposing to build at the University of Maryland a small electron ring with a circumference of about 11 m for studying the evolution of a space-charge-dominated beam in a circular lattice. The general features of the lattice design with printed-circuit quadrupoles, dipoles, and other components and special problems are presented. Further details can be found in two related papers.