Parameter Space for the LHC High-Luminosity Upgrade

We review the parameter space for the high-luminosity upgrade of the LHC (HLLHC). Starting from the luminosity targets and the primary limitations, e.g., event pile up, turnaround time, injector limits, and intrabeam scattering, we determine compatible beam parameters such as the beam intensity, bunch spacing, transverse and longitudinal emittances, bunch length, and IP beta functions required to meet the HL-LHC goals. Possible HL-LHC parameter sets together with their expected performance reach are presented for comparison and discussion. Presented at the International Particle Accelerator Conference (IPAC’12) – May 20-25, 2012, N. Orleans, USA Geneva, Switzerland, May 2012 PARAMETER SPACE FOR THE LHC LUMINOSITY UPGRADE ∗ Oliver S. Brüning and Frank Zimmermann, CERN, Geneva, Switzerland