Ions in LHC and the injector chain

Karlheinz Schindl
CERN-PS Division, 1211 Geneva 23, Switzerland

The Large Hadron Collider, presently under construction at CERN, is mainly intended to studying proton-proton collisions at 14 TeV c.m. energy. One of the four large experiments, ALICE, is being built with a view to examining collisions of heavy ions such as Pb at 5.6 TeV/u c.m. energy. A brief overview of LHC's basic parameters and ensuing technological solutions will be given, and particular issues of ion collisions will be highlighted. One of the major assets of LHC is the existing injector chain which is udergoing face-lifting to provide the LHC with proton and ions. The ion injector chain will consist of a pulsed ECR source from which the existing Linac 3 complex will be fed. Several Linac 3 pulses of ions will be accumulated and cooled in LEIR (LEAR upgraded and re-dubbed), accelerated through PS and SPS and finally sent to the LHC. Although the injector upgrading programme for ions is still ahead of us, recent beam tests in LEAR have dramatically demonstrated the scheme's feasibility. Nevertheless, improvements of the ECR source performance (also for lighter ions such as Nb and Ca) would be highly beneficial for the LHC performance with ions

Presenting Author : Schindl K.
Presentation : Oral
Tuesday 14:00