Plasma Lens Backgrounds at a Future Linear Collider

TL;DR

This paper assesses the background noise introduced by plasma lenses in future linear colliders, analyzing its impact on detector performance and emphasizing the need for technological improvements.

Contribution

It identifies background sources from plasma lenses, calculates their event rates, and evaluates their effects on a hypothetical collider detector.

Findings

Background yields are high with a sevenfold luminosity increase.

Further detector technology improvements are necessary.

Background effects could impact collider performance.

Abstract

A 'plasma lens' might be used to enhance the luminosity of future linear colliders. However, its utility for this purpose depends largely on the potential backgrounds that may be induced by the insertion of such a device in the interaction region of the detector. In this note we identify different sources of such backgrounds, calculate their event rates from the elementary interaction processes, and evaluate their effects on the major parts of a hypothetical Next Linear Collider (NLC) detector. For plasma lens parameters which give a factor of seven enhancement of the luminosity, and using the NLC design for beam parameters as a reference, we find that the background yields are fairly high, and require further study and improvements in detector technology to avoid their impact.