Linear Colliders

Abstract

This article summarizes the studies for implementation of the Linear Collider projects, CLIC (the Compact LInear Collider) and ILC (the International Linear Collider). The accelerators aim to collide electrons and positrons at 380 and 250 GeV respectively, and both can be extended in length and/or with improved technologies to multi-TeV energies. CLIC is studied for construction at CERN, while ILC is being studied for implementation in Japan. The technical status, expected performances, recent progress and implementation parameters, as schedules, power and costs, are presented. The summary focuses on the accelerator studies for the colliders, but the accelerator studies are accompanied by comprehensive physics and detector studies referred to in the text and references. The future programs including the work for sustainable implementations are briefly summarized at the end. Many of the linear collider studies are common for the two projects and are presented as such. The projects are both implementable at costs similar to LHC and power/energy consumption similar or less than LHC.