3rd CARE-HHH-APD Workshop: Towards a Roadmap for the Upgrade of the LHC and GSI Accelerator Complex: Valencia, Spain 16 - 20 Oct 2006

This report contains the Proceedings of the CARE-HHH-APD Workshop ‘Towards a Roadmap for the Upgrade of the LHC and GSI Accelerator Complex’, “LHC-LUMI-06”, held at IFIC in Valencia, Spain, 16– 20 October 2006. The LUMI’06 workshop developed novel scenarios for the upgrade of the Large Hadron Collider (LHC) interaction regions, while eliminating a number of previous options, proposed novel sets of beam parameters better tailored to a higher luminosity LHC, and discussed the supporting upgrades to the CERN accelerator complex, including replacement of the Proton Synchrotron, which may be necessary for boosting the integrated LHC luminosity as well as the peak luminosity. With a substantial participation from US-LARP, the European and US upgrade activities could be harmonized and a general consensus emerged on the future steps to be taken. The interaction region and beam parameter upgrades are expected to increase the peak luminosity several times. However, harvesting the full gain also in the integrated luminosity will almost certainly require accompanying upgrades to the CERN injector complex, improving turn-around time and removing intensity bottlenecks.