POSSIBLE APPLICATION OF AN EBIS IN PREINJECTORS FOR LARGE HEAVY-ION COLLIDERS

High energy, heavy ion nuclear physics has so far been limited to expe riments with a fixed target. Presently there are two projects that wou ld greatly extend the available collision energy: the Relativistic Hea vy Ion Collider (RHIC) under construction at Brookhaven National Labor atory (BNL), and the Large Hadron Collider (LHC) planned at CERN. Whil e RHIC was from the very beginning designed for collisions of all heav y ions up to gold, LHC was initially considered as a p-p and, perhaps eventually, an e-p collider, with the heavy ion option added at a late r stage; this option is now included in the planning right from the be ginning. The present RHIC scenario for acceleration of gold ions start s with the BNL Tandem injecting Au14+ ions into the Booster; after acc eleration ions are stripped to a charge state of 77+, injected into th e AGS, stripped again to 79+ and injected into RHIC, with three bunche s per cycle. The LHC scenario for acceleration of lead ions will use a s the injector the CERN Heavy Ion Facility: production of ions in a ch arge state around 27+ in an ECR ion source, followed by an RFQ/linac c ombination, stripping to Pb53+ at 4.2 MeV/u, acceleration in the PSB a nd PS, stripping to the slate 82+, and acceleration in the SPS. There would be 144 bunches injected into the LHC per SPS cycle. However, the resulting luminosity would be rather low and several accumulating sch emes are being considered as well. In this paper we are considering a next-generation EBIS device as a possible substitution for ion sources in the preinjector stages of the two colliders with the objective of achieving an improved performance.