Introduction

To fully exploit the discovery potential of the HL-LHC, it is essential to maintain the excellent performance of the detectors in terms of efficiency, resolution, and background rejection. The silicon tracker with precision tracking and timing will help mitigate pileup effects, one of the biggest challenges for the HL-LHC. For ATLAS Phase-2 upgrade, Dr. Xu is interested in developing silicon detectors using novel, state-of-the art technology, such as Low Gain Avalanche Detector and Monolithic Active Pixel Sensors, to achieve high performance in high radiation environments.

Application of state-of-the-art technology in detector development would have profound impact for the design and development of future collider experiments (Future Circular Collider, Circular Electron Positron Collider, Super Tau-Charm Factory, etc) and other particle physics experiments and facilities (Electron Ion Collider).

Silicon detectors

• A data acquisition system for HV-CMOS sensor research and development in the upgrade of ATLAS experiment, Rev.Sci.Instrum. 90 (2019) 6, 064701

• Testbeam results of irradiated ams H18 HV-CMOS pixel sensor prototypes, JINST 13 (2018) P02011

• Results of the 2015 testbeam of a 180 nm AMS High-Voltage CMOS sensor prototype, JINST 11 (2016) P07019

• Development of a modular test system for the silicon sensor R&D of the ATLAS Upgrade, JINST 12 (2017) 01, P01008