Tracking in 4 dimensions

Abstract

In this contribution we review the progress towards the development of a novel type of silicon detectors suited for tracking with a picosecond timing resolution, the so called Ultra-Fast Silicon Detectors. The goal is to create a new family of particle detectors merging excellent position and timing resolution with GHz counting capabilities, very low material budget, radiation resistance, fine granularity, low power, insensitivity to magnetic field, and affordability. We aim to achieve concurrent precisions of ∼ 10 ps and ∼ 10µm with a 50 µm thick sensor. The first part of this contribution explains the basic concepts of low-gain silicon sensors, while in the following the main results are presented, together with the efforts to make the design radiation resistance.

4D tracking with ultra-fast silicon detectors

“…In semiconductors this effect is used in Avalanche Photon Detectors (APD) with gain in the 100's and Silicon Photon Multipliers (SiPM) with a gain of about 10,000 [10]. In distinction to those applications, UFSD are based on Low-Gain Avalanche Detectors (LGAD) with a gain of 10-20 [11].…”