Low Energy Ion Ring

CERN Complex

Current particle and nuclear facilities
LHC	Accelerates protons and heavy ions
LEIR	Accelerates ions
SPS	Accelerates protons and ions
PSB	Accelerates protons
PS	Accelerates protons or ions
Linac 3	Injects heavy ions into LEIR
Linac4	Accelerates ions
AD	Decelerates antiprotons
ELENA	Decelerates antiprotons
ISOLDE	Produces radioactive ion beams
MEDICIS	Produces isotopes for medical purposes

The Low Energy Ion Ring (LEIR) is a particle accelerator at CERN used to accelerate ions from the LINAC 3 to the Proton Synchrotron (PS) to provide ions for collisions within the Large Hadron Collider (LHC).