23–26 May 2024
山东省青岛市
Asia/Shanghai timezone

LGAD Based 4D Outer time-Tracker Development for CEPC

Speaker

Li, Meng zhao (Institute of High Energy Physics, Chinese Academy of Sciences)

Description

The AC-coupled Low-Gain Avalanche Detectors (AC-LGAD) are designed as detectors with a 100% fill factor for high precision 4D-tracking. They have been studied and researched by many institutes, including BNL, FBK, and HPK, among others. AC-LGAD can be used for the construction of time-track detectors in collider experiments such as CEPC. The Institute of High Energy Physics (IHEP) has also conducted extensive research on AC-LGAD. The pixel-type AC-LGAD sensors with a pitch of 2000 µm and AC pad of 1000 µm show spatial resolution better than 16 µm. The strip-type AC-LGAD can be fabricated with a lower than 0.2 P n+ layer dose to improve the spatial resolution, and different pad-pitch structures can also be fabricated. Testing results show that the spatial resolution can be lower than 8 µm. Strips with different pad-pitch structures have been fabricated and studied, and the results show that pad-pitch structures also affect the spatial resolution.

Primary authors

Li, Meng zhao (Institute of High Energy Physics, Chinese Academy of Sciences) Mr Sun, Weiyi (Institute of High Energy Physics, Chinese Academy of Sciences) zhao, mei (IHEP) Liang, Zhijun (中国科学院高能物理研究所) fan, yunyun (IHEP,Chinese Academy of Sciences (CN))

Presentation materials