First survey of centimeter-scale AC-LGAD strip sensors with a 120 GeV proton beam
Date
01-06-2023
Journal Title
Journal ISSN
Volume Title
Publisher
IOP Publishing Ltd
Abstract
We present the first beam test results with centimeter-scale AC-LGAD strip sensors, using the Fermilab Test Beam Facility and sensors manufactured by the Brookhaven National Laboratory. Sensors of this type are envisioned for applications that require large-area precision 4D tracking coverage with economical channel counts, including timing layers for the Electron Ion Collider (EIC), and space-based particle experiments. A survey of sensor designs is presented, with the aim of optimizing the electrode geometry for spatial resolution and timing performance. Several design considerations are discussed towards maintaining desirable signal characteristics with increasingly larger electrodes. The resolutions obtained with several prototypes are presented, reaching simultaneous 18 mu m and 32 ps resolutions from strips of 1 cm length and 500 mu m pitch. With only slight modifications, these sensors would be ideal candidates for a 4D timing layer at the EIC.
Description
Keywords
Particle tracking detectors (Solid-state detectors), Solid state detectors, Timing detectors