Development of novel silicon sensors with high time and spatial resolution

TL;DR

This paper reports on the development and testing of novel silicon sensors with enhanced timing and spatial resolution, aimed at improving electromagnetic calorimeters for the ILC.

Contribution

It introduces new silicon sensor prototypes with integrated ASICs, demonstrating improved timing and position resolution through beam and radioisotope tests.

Findings

LGAD sensors achieved high timing resolution

PSD sensors demonstrated precise position reconstruction

Prototype sensors show promising performance for ILC calorimeters

Abstract

Silicon pad sensors with novel functions of higher timing resolution (LGAD: Low Gain Avalanche Detector) and higher position resolution (PSD: Position Sensitive Detector) are studied for an application to Silicon-Tungsten electromagnetic calorimeter for a detector of the International Linear Collider (ILC). Prototype sensors are fabricated, equipped with dedicated ASICs (Application-Specific Integrated Circuits) and tested with a positron beam as well as a radioisotope. The first results of the measurements of timing resolution with LGADs and position reconstruction with PSDs are reported.