New high-dispersion beamlines at the Bevalac for the production, purification and transport of radioactive beams

The external particle beam transport area of the Lawrence Berkeley Laboratories Bevalac was redesigned so that radioactive beams may be more efficiently analyzed and transported. Using a variety of relativistic heavy ions available at the Bevalac, radioactive beams can be formed at the first external focal point of the accelerator by the well known process of nuclear fragmentation. The large cross-section and small deflection of the projectile fragments leads to high production and delivery efficiency for these beams. Previously, at the Bevalac light radioactive ions of He, Li, Be, B, C have been delivered to an experimental area. Routinely 19Ne is delivered to the biomedical treatment site. This paper reports on the production, purification and delivery of radioactive beams of /sup 20,21/F and 39Ca