The notion of a flat beam is now well established and has been proven theoretically and experimentally with applications for linear colliders. In this paper, we propose a new and simple demonstration of the flat beam theorem, and a possible application in the frame of radioactive ion beam (RIB) production. It consists of using a magnetized multi-specie heavy ion beam extracted from a high frequency ECR source, decoupling the transverse phase planes in such a way as to obtain a very small horizontal emittance, and using a dipole to separate the isotopes. A design of such a transport and separation line is proposed and commented upon. |
