Large permanent magnet dipole performance

We designed, built, tuned, and installed in our Race-Track Microtron (RTM) a pair of Sm/sub 2/Co/sub 17/ Rare-Earth Permanent Magnet (REPM) dipoles that provide a /spl sim/0.96 T field uniform to 0.3% in the 500/spl times/250/spl times/20 mm/sup 3/ working region. By accelerating electrons through all 14 orbits to 67.5 MeV, we have negotiated the difficult 1/sup st/ orbit beam passage with its critical focusing and orbit displacement requirements, thus, proving our magnet system design.