Development of Pixelated Capacitive-Coupled LGAD (ACLGADpix) Detectors

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Main Authors: Nakamura, Koji, Murayama, Yua, Horikoshi, Issei, Kobayashi, Mahiro, Sato, Koji
Format: Preprint
Published: 2026
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author Nakamura, Koji
Murayama, Yua
Horikoshi, Issei
Kobayashi, Mahiro
Sato, Koji
author_facet Nakamura, Koji
Murayama, Yua
Horikoshi, Issei
Kobayashi, Mahiro
Sato, Koji
contents The Low-Gain Avalanche Diode (LGAD) is a semiconductor detector capable of achieving excellent timing resolution (~20 ps) for minimum ionizing particles (MIPs). To realize a pixelated detector with both high timing precision and spatial resolution, we have been developing Capacitive-Coupled LGADs (ACLGADs) for future collider experiments, such as the latter phase of the High-Luminosity LHC. We have successfully fabricated a pixelated ACLGAD (ACLGADpix) with a 100 $μ$m %\times% 100 $μ$m pixel pitch, maintaining uniform timing performance across the active area. In this presentation, we will report recent measurement results from ACLGADpix prototypes using beta rays, an infrared laser, and a 3 GeV electron beam. We will also discuss potential readout electronics for future collider applications.
format Preprint
id arxiv_https___arxiv_org_abs_2603_29250
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Development of Pixelated Capacitive-Coupled LGAD (ACLGADpix) Detectors
Nakamura, Koji
Murayama, Yua
Horikoshi, Issei
Kobayashi, Mahiro
Sato, Koji
Instrumentation and Detectors
High Energy Physics - Experiment
The Low-Gain Avalanche Diode (LGAD) is a semiconductor detector capable of achieving excellent timing resolution (~20 ps) for minimum ionizing particles (MIPs). To realize a pixelated detector with both high timing precision and spatial resolution, we have been developing Capacitive-Coupled LGADs (ACLGADs) for future collider experiments, such as the latter phase of the High-Luminosity LHC. We have successfully fabricated a pixelated ACLGAD (ACLGADpix) with a 100 $μ$m %\times% 100 $μ$m pixel pitch, maintaining uniform timing performance across the active area. In this presentation, we will report recent measurement results from ACLGADpix prototypes using beta rays, an infrared laser, and a 3 GeV electron beam. We will also discuss potential readout electronics for future collider applications.
title Development of Pixelated Capacitive-Coupled LGAD (ACLGADpix) Detectors
topic Instrumentation and Detectors
High Energy Physics - Experiment
url https://arxiv.org/abs/2603.29250