Performance of AC-LGAD strip sensor designed for the DarkSHINE experiment

2023/10/21 by Kang Liu, Liu, Kang, Mengzhao Li +15
Chemistry · Engineering · Physics and Astronomy · #CCD and CMOS Imaging Sensors #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Instrumentation and Detectors (physics.ins-det) #Particle Detector Development and Performance #Spectroscopy and Laser Applications

paper · pdf · doi:10.48550/arxiv.2310.13926

openalex publication_date 2023/10/21 · openalex created_date 2023/10/25 · openalex updated_date 2026/07/28

Abstract

AC-coupled Low Gain Avalanche Detector (AC-LGAD) is a new precise detector technology developed in recent years. Based on the standard Low Gain Avalanche Detector (LGAD) technology, AC-LGAD sensors can provide excellent timing performance and spatial resolution. This paper presents the design and performance of several prototype AC-LGAD strip sensors for the DarkSHINE tracking system, as well as the electrical characteristics and spatial resolution of the prototype sensors from two batches of wafers with different n⁺ dose.The range of spatial resolutions of 6.5μm ∼ 8.2μm and 8.8μm ∼ 12.3μm are achieved by the AC-LGAD sensors with 100μm pitch size.

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