Performance evaluation of thin active-edge planar sensors for the CLIC vertex detector

TL;DR

This study evaluates the performance of thin active-edge planar silicon sensors for the CLIC vertex detector using simulations and experimental data, demonstrating their efficiency and guiding optimal sensor design for high-precision collider applications.

Contribution

It introduces a comprehensive simulation and experimental comparison of thin active-edge sensors, identifying designs suitable for future high-precision vertex detectors.

Findings

Sensors with 50um thickness and active edges operate efficiently up to the physical edge.

Good agreement between simulation results and experimental data.

Design recommendations for sensors in the CLIC vertex detector.

Abstract

Thin planar silicon sensors with a pitch of 55um, active edge and various guard ring layouts are investigated, using two-dimensional finite-element T-CAD simulations. The simulation results have been compared to experimental data, and an overall good agreement is observed. It is demonstrated that 50um thin planar silicon sensors with active edge with floating guard ring or without guard ring can be operated fully efficiently up to the physical edge of the sensor. The simulation findings are used to identify suitable sensor designs for application in the high-precision vertex detector of the future CLIC linear $e^+e^-$ collider.