Detector Systems at CLIC

TL;DR

This paper discusses the design and adaptation of detector systems for the CLIC collider, emphasizing high precision, background suppression, and engineering challenges for multi-TeV physics experiments.

Contribution

It presents the overall detector concepts for CLIC, including adaptations from ILC detectors and innovative solutions for high-energy, high-background environments.

Findings

Design of dense calorimeters with tungsten absorbers

Implementation of high-resolution, fast-timing vertex detectors

Development of advanced event reconstruction and background suppression techniques

Abstract

The Compact Linear Collider CLIC is designed to deliver e+e- collisions at a center of mass energy of up to 3 TeV. The detector systems at this collider have to provide highly efficient tracking and excellent jet energy resolution and hermeticity for multi-TeV final states with multiple jets and leptons. In addition, the detector systems have to be capable of distinguishing physics events from large beam-induced background at a crossing frequency of 2 GHz. Like for the detector concepts at the ILC, CLIC detectors are based on event reconstruction using particle flow algorithms. The two detector concepts for the ILC, ILD and SID, were adapted for CLIC using calorimeters with dense absorbers limiting leakage through increased compactness, as well as modified forward and vertex detector geometries and precise time stamping to cope with increased background levels. The overall detector concepts for CLIC are presented, with particular emphasis on the main detector and engineering challenges, such as: the ultra-thin vertex detector with high resolution and fast time-stamping, hadronic calorimetry using tungsten absorbers, and event reconstruction techniques related to particle flow algorithms and beam background suppression.