Study of deep carbonated LGAD at IHEP

5 Feb 2025, 15:30
15m
Sala Stringa (FBK, Trento)

Sala Stringa

FBK, Trento

Via Sommarive 18 38123 Povo di Trento ITALY
Oral LGAD LGAD 2

Speaker

Yuan Feng (Chinese Academy of Sciences (CN))

Description

Low Gain Avalanche Detectors (LGADs) are crucial for high-energy physics applications, especially in the harsh radiation environments of future colliders. This abstract introduces LGADs enhanced with deep carbon implantation, emphasizing their superior radiation tolerance.

LGADs achieve high temporal resolution and precise spatial measurements through an internal gain mechanism and fine structure. The deep implantation of a carbon layer significantly enhances performance by protecting the boron gain layer from deactivation caused by irradiation. This protection is critical for maintaining detector efficiency and longevity.

Our proton irradiation campaign demonstrates that deep carbon implanted sensors exhibit outstanding performance, with better charge collection efficiency and smaller gain deterioration after 80 MeV proton radiation exposure up to $2.5\times 10^{16} n_{eq}/cm^{2}$ compared with shallow carbon implanted devices. These improvements ensure consistent and reliable operation in high-radiation environments, making LGADs with deep carbon implantation a pivotal advancement.

This presentation will delve into LGAD operation principles, merits and drawbacks of deep carbon implantation, and experimental results showcasing enhanced performance in radiation tolerance.

Authors

Mei Zhao (Chinese Academy of Sciences (CN)) Yuan Feng (Chinese Academy of Sciences (CN)) Yunyun Fan (Chinese Academy of Sciences (CN)) Zhijun Liang (Chinese Academy of Sciences (CN))

Presentation materials