CV
Research experience, education, publications, and service.
Contact Information
| Name | Peiyuan Chen |
| Professional Title | Research Assistant, PandaX Collaboration |
| 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
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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.
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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.
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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
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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.
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2024 - 2024 Atlanta, USA
Visiting Undergraduate Student
Georgia Institute of Technology
Physics
Publications
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2026 Performance Study and Circuit Simulation for R12699-406-M4 Photomultiplier Tube Base
IEEE Transactions on Nuclear Science 73(6), 2511-2519
Published; co-first author with Houqi Huang.
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2026 Measurement of Solar pp Neutrino Flux with the New PandaX-4T Data
arXiv:2607.02405
PandaX Collaboration paper; author list is ordered alphabetically.
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2024 Bi-Interlayer Strategy for Modulating NiCoP-Based Heterostructure toward High-Performance Aqueous Energy Storage Devices
Advanced Materials
Co-author; contributed to experiments and simulations.
Manuscripts and Thesis
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Coupled PMT Electron-Transport and Base-Circuit Modeling for Saturation and Suppression Correction in Liquid-Xenon Detector Data
Working title; manuscript in preparation.
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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
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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.
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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.
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55-Channel R11410 Array and Position Reconstruction
Hardware, DAQ, calibration, optical simulation, and reconstruction; approximately 0.66 mm spatial resolution in array performance tests.
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Rigid-Flex PMT Base Evaluation
Thermal, connectivity, noise, attenuation, and crosstalk tests informing layout improvements.
Awards
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2026 First Prize, Annual Review of Nuclear and Particle Science Video Contest
Annual Reviews.
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2023 National First Prize, China Undergraduate Physics Experiment Competition (CUPEC)
Ranked 1st in comprehensive experimental problem D.
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2025 High-Level Academic Competition Achievement Scholarship, Jilin University
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2023 Student of the Year (Group Member), Shanghai Jiao Tong University
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2021 13th Place, China Undergraduate Physics Tournament
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2021 Grand Prize, Northeast Division Undergraduate Physics Tournament
Patents
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Small Wind Tunnel Device Used in Laboratory
Chinese patent CN215414302U. Contributed to design, fabrication, and testing.
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Method of Measuring Wind Speed Using a Constant Flow Thermal Anemometer
Chinese patent CN113466487B. Contributed to design, fabrication, and testing.
Skills
Languages
Leadership & Service
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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.
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2022 - 2022 Changchun, China
Chairman & Referee
JLUPT
- Organized and judged university physics tournament