Backgrounds at future linear colliders

TL;DR

This paper reviews the sources and characteristics of background radiation at future electron-positron linear colliders, focusing on beam delivery, interaction point, and beamstrahlung effects on detector components.

Contribution

It provides a detailed overview of background sources, their particle compositions, and spatial distributions, with specific insights into beamstrahlung impacts on calorimeters.

Findings

Quantified muon, neutron, photon, and electron-positron pair backgrounds for various detectors.

Analyzed the space distribution of backgrounds and their effects on detector components.

Discussed the impact of beamstrahlung on calorimeter performance.

Abstract

A brief review of the background for experiments at future electron-positron linear colliders is done. Two sources of background are discussed: the beam delivery system and the interaction point. The abundance of background muons, neutrons, photons and electron-positron pairs is quoted for different sub-detectors and both background sources. The background caused by the beamstrahlung is described in more detail. Space distributions are sketched and the impact on calorimeters is discussed for the background neutrons.