MURA Builds Electron‐Positron Storage Ring

A 200‐MeV electron‐position storage ring, designed to study colliding‐beam and high‐intensity beam phenomena, will soon begin collecting particles at the Midwestern Universities Research Association, Stoughton, Wisconsin. The ring, with radius of 145 cm, is expected to store 1 ampere of electrons and 100 milliamperes of positrons. Fred Mills, MURA director, hopes that the electrons will begin circulating by spring. A positron injection system could be in operation a year later.