Combined longitudinal and transverse multiturn injection in a heavy ion accumulator

After the completion of the antiproton programme, the Low-Energy Antiproton Ring (LEAR) will be able to serve as an accumulator ring for heavy ions in the injector chain of the Large Hadron Collider (LHC). For injection and accumulation, a scheme is proposed, which exploits both the longitudinal and the transverse acceptances of LEAR. Compared to a classical multiturn injection, a factor 3 to 5 in intensity is gained for the set of parameters pertaining to this case; furthermore emittances, which are more favorable for electron cooling, result. The principle is outlined and computer simulations are presented.