Developments of Hybrid Pixel Detector for Photon Science at PSI

by Dr Xiangyu Xie（谢祥羽） (Paul Scherrer Institute)

Thursday 16 Apr 2026, 11:00 → 12:00 Asia/Shanghai

Tsung-Dao Lee Institute/N6F-N600 - Lecture Room (Tsung-Dao Lee Institute)

Abstract:

Hybrid pixel detectors have revolutionized X-ray experiments at synchrotron facilities since 2006, and have since established themselves as the dominant detector technology in photon science. The Photon Science Detector Group at the Paul Scherrer Institute (PSI) is among the leading teams developing hybrid pixel detectors for synchrotron and XFEL applications, while also pursuing broader research to advance detector technologies and their scientific applications.

This talk will present an overview of PSI detector systems based on diverse technological approaches tailored to different experimental needs, together with ongoing developments. For soft X-ray detection, low-gain avalanche diodes (LGADs) are under development, enabling single-photon counting down to 500 eV for the first time. In addition, new single-photon-counting and charge-integrating readout ASICs are being designed to cope with the higher flux of fourth-generation synchrotrons and XFELs. Deep-learning-based reconstruction methods for the 25 µm-pitch MÖNCH detector are also being explored to enhance spatial performance in photon-starved applications. These advancements are expected to significantly expand experimental capabilities at cutting-edge light sources and open new opportunities for scientific discovery.

About speaker:

Xiangyu received his Ph.D. in experimental particle physics from the University of Science and Technology of China in 2022, where his research focused on thin-gap resistive plate chambers (RPCs) for the ATLAS Phase-II upgrade at CERN. He subsequently joined the Photon Science Detector Group at the Paul Scherrer Institute as a postdoctoral researcher. His research focuses on enhancing the spatial resolution of hybrid pixel detectors using machine learning, with applications in photon science and electron microscopy. His expertise also includes silicon charge transport simulations and advanced detector calibration techniques.

Online Meeting Room：https://meeting.tencent.com/dm/G3UY6DcNKR3K

ID: 945873039