Peiyuan Chen

I am a research assistant with the PandaX Collaboration at the Tsung-Dao Lee Institute, Shanghai Jiao Tong University. I received my B.S. in Physics from Jilin University in June 2026 and was a visiting undergraduate student at Georgia Tech in 2024.

My work connects detector hardware with the signals used in rare-event searches. I develop PMT acquisition systems, characterize photosensor response, and use bench measurements, circuit simulation, and waveform analysis to study calibration and reconstruction in liquid-xenon detectors. My research spans the full chain from high-voltage and readout integration to detector-data correction and PMT-array position reconstruction.

Download CV · Email · Research projects

Selected Research

• PMT acquisition and characterization: Led development and maintenance of a 192-channel test platform with 500 MS/s digitization and over 1,000 MB/s readout bandwidth. Characterized more than 160 R11410 and 500 R12699 PMTs.
• Large-signal response and waveform correction: Combine measured response curves, base-circuit simulation, and a custom 2.5D diagnostic electron-transport model. Under the same event selection, waveform correction reduced the difference between multi-site and single-site reconstructed energy peak positions by 85%.
• PMT arrays and position reconstruction: Led hardware, DAQ, calibration, Geant4 optical simulation, and reconstruction for a 55-channel R11410 array; achieved approximately 0.66 mm overall spatial resolution in array performance tests.
• R12699 base performance: Co-first author of the resulting IEEE Transactions on Nuclear Science paper on PMT-base performance and circuit simulation.

Research Interests

• Dark matter detection and rare-event searches
• Liquid-xenon detectors, PMT instrumentation, and readout electronics
• Detector calibration, nonlinear waveform response, and position reconstruction