CV

Research experience, education, publications, and service.

Contact Information

Name Peiyuan Chen
Professional Title Research Assistant, PandaX Collaboration
Email orionchen314@gmail.com

Professional Summary

Detector instrumentation researcher working on PMT acquisition, characterization, waveform correction, and position reconstruction for liquid-xenon rare-event experiments.

Research Experience

  • 2024 - Present

    Shanghai, China

    Research Assistant
    PandaX Collaboration, TDLI, Shanghai Jiao Tong University
    • Led development and maintenance of a 192-channel universal PMT signal acquisition platform, integrating high voltage, signal readout and separation, 500 MS/s waveform digitization, over 1,000 MB/s readout bandwidth, and storage; operated stably for more than 500 days.
    • Established waveform-processing workflows and a performance database for dark count, gain, and afterpulse evaluation; characterized more than 160 R11410 and 500 R12699 PMTs at ambient and low temperatures.
    • Evaluated rigid-flex PMT bases and informed trace-spacing and ground-isolation improvements. Noise and attenuation fell to about 1/5 and 1/3 of their original levels; average crosstalk fell from 15–20% to about 1%, and maximum crosstalk from 28% to below 3%.
    • Measured nonlinear PMT response over approximately 1–100,000 PE per channel and pulse separations of 5–100 μs; co-first author of the R12699 base study in IEEE Transactions on Nuclear Science.
    • Developed a coupled base-circuit and custom 2.5D electron-transport diagnostic model for saturation and suppression.
    • Applied waveform corrections to detector data; using the same event selection before and after correction, reduced the difference between multi-site and single-site reconstructed energy peak positions by 85%.
    • Led hardware, DAQ, calibration, Geant4 optical simulation, and reconstruction analysis for a 55-channel R11410 array; achieved approximately 0.66 mm overall spatial resolution in array performance tests.
  • 2024 - 2024

    Atlanta, USA

    Research Intern (Trinity PeV Neutrino Observatory)
    Georgia Institute of Technology
    • Designed and fabricated detector connection components for the Trinity PeV Neutrino Observatory.
  • 2022 - 2022

    Shanghai, China

    Research Assistant
    PandaX Collaboration
    • Designed a calibration device for the PandaX-III high-pressure gaseous-xenon TPC with Micromegas readout; reduced thickness while maintaining mechanical strength and leak-tightness, achieving sub-millimeter position precision.

Education

  • 2020 - 2026

    Changchun, China

    Bachelor of Science
    Jilin University
    Physics
    • Rank in major: 8/29.
    • B.S. thesis: Development and Testing of R12699 and R11410 PMT Arrays: A Comparative Study of Position-Reconstruction Algorithms. Outstanding Undergraduate Thesis Award, Jilin University.
  • 2024 - 2024

    Atlanta, USA

    Visiting Undergraduate Student
    Georgia Institute of Technology
    Physics

Publications

Manuscripts and Thesis

  • Coupled PMT Electron-Transport and Base-Circuit Modeling for Saturation and Suppression Correction in Liquid-Xenon Detector Data

    Working title; manuscript in preparation.

  • 2026
    Development and Testing of R12699 and R11410 PMT Arrays: A Comparative Study of Position-Reconstruction Algorithms

    B.S. thesis, Jilin University; Outstanding Undergraduate Thesis Award.

Projects

  • 192-Channel PMT Acquisition and Characterization

    500 MS/s digitization; over 1,000 MB/s readout bandwidth; more than 160 R11410 and 500 R12699 PMTs characterized.

  • PMT Waveform Correction

    Measured response and diagnostic modeling applied to detector data; 85% reduction in MS–SS reconstructed energy peak separation under the same event selection.

  • 55-Channel R11410 Array and Position Reconstruction

    Hardware, DAQ, calibration, optical simulation, and reconstruction; approximately 0.66 mm spatial resolution in array performance tests.

  • Rigid-Flex PMT Base Evaluation

    Thermal, connectivity, noise, attenuation, and crosstalk tests informing layout improvements.

Awards

  • 2026
    First Prize, Annual Review of Nuclear and Particle Science Video Contest

    Annual Reviews.

  • 2023
    National First Prize, China Undergraduate Physics Experiment Competition (CUPEC)

    Ranked 1st in comprehensive experimental problem D.

  • 2025
    High-Level Academic Competition Achievement Scholarship, Jilin University
  • 2023
    Student of the Year (Group Member), Shanghai Jiao Tong University
  • 2021
    13th Place, China Undergraduate Physics Tournament
  • 2021
    Grand Prize, Northeast Division Undergraduate Physics Tournament

Patents

  • Small Wind Tunnel Device Used in Laboratory

    Chinese patent CN215414302U. Contributed to design, fabrication, and testing.

  • Method of Measuring Wind Speed Using a Constant Flow Thermal Anemometer

    Chinese patent CN113466487B. Contributed to design, fabrication, and testing.

Skills

Programming & Data: Python, C++, MATLAB, ROOT, Geant4, Git, LaTeX
Experimental: PMT characterization, detector readout, DAQ systems, circuit design, vacuum systems
Computation: Monte Carlo simulation, finite element analysis, machine learning for reconstruction

Languages

Chinese : Native
English : Fluent

Leadership & Service

  • 2021 - 2023

    Changchun, China

    Founder & Chairman
    CUPT Community, Jilin University
    • Founded and led an approximately 30-member CUPT community with a five-member executive committee.
    • Delivered five training sessions for audiences of 20–100 on instrument use, experimental design, uncertainty analysis, and data analysis; trainees from that cohort won a national first prize.
  • 2022 - 2022

    Changchun, China

    Chairman & Referee
    JLUPT
    • Organized and judged university physics tournament