Narrow Results

I review some accelerator physics topics for circular as well as linear colliders, considering both lepton and hadron beams.

This article describes the fundamental limitations on the performance of electron–positron circular colliders. After introducing the subject from its end use parameter, the luminosity, we discuss in detail the various accelerator physics limitations and the evolution of several ingenious frontier ideas to ever increase the luminosity of these colliders.

I review some accelerator physics topics for circular as well as linear colliders, considering both lepton and hadron beams.

An overview of beam-related backgrounds at the International Linear Collider and the Compact Linear Collider is presented. Two sources of background are discussed: the beam delivery system and the interaction point. Abundances of background muons, neutrons, beamstrahlung photons and soft e⁺e⁻ pars are quoted for different sub-detectors and both background sources. A difference in the background environment between the two collider options is described. The impact of the background particles on the event reconstruction is sketched. Available tools for rejection of background signals in subdetectors are listed.