Silicon sensors with resistive read-out: Machine Learning techniques for ultimate spatial resolution

Abstract

Resistive AC-coupled Silicon Detectors (RSDs) are based on the Low Gain Avalanche Diode (LGAD) technology, characterized by a continuous gain layer, and by the innovative introduction of resistive read-out. Thanks to a novel electrode design aimed at maximizing signal sharing, RSD2, the second RSD production by Fondazione Bruno Kessler (FBK), achieves a position resolution on the whole pixel surface of about 8 $\mu m$ for 200-$\mu m$ pitch. RSD2 arrays have been tested using a Transient Current Technique setup equipped with a 16-channel digitizer, and results on spatial resolution have been obtained with machine learning algorithms.

arXiv comment2 pages, 2 figure

References in corpus (5)

• Resistive AC-Coupled Silicon Detectors: principles of operation and first results from a combined analysis of beam test and laser data
• First demonstration of 200, 100, and 50 um pitch Resistive AC-Coupled Silicon Detectors (RSD) with 100% fill-factor for 4D particle tracking
• Measurements of an AC-LGAD strip sensor with a 120 GeV proton beam
• First application of machine learning algorithms to the position reconstruction in Resistive Silicon Detectors
• The second production of RSD (AC-LGAD) at FBK