# Chao Gu

> Software Engineer at Cepton

Location: San Francisco Bay Area, United States
Profile: https://flows.cv/chaogu

## Work Experience
### Software Engineer @ Cepton
Jan 2019 – Present | San Jose, California

### Postdoctoral Associate @ Duke University
Jan 2016 – Jan 2019
• Worked on the data analysis of the JLab PRad Experiment (High Precision Measurement of the Proton Charge Radius).
- • Carried out the analysis of the electric form factors of the proton at very low Q2 region for the first time and extracted the charge radius of the proton with sub-percentage accuracy which is important to clarify the “proton radius puzzle”.
- • Developed a Geant4 simulation package with an independent fast optical model of the calorimeter for accurate detector response.
- • Developed a set of event generators for elastic electron-proton scattering and Moller scattering to get more accurate radiative corrections.

• Worked on the prototype manufacture of a Gas Cherenkov detector for the Solenoidal Large Intensity Device which will be used for JLab 12GeV upgrade. Also studied the behavior of the Hamamatsu multi-anode photo multiplier tube used in this detector in the magnetic field.

• Co-spokesperson of JLab Proposal PR12-17-009 (Precision Deuteron Charge Radius Measurement with Elastic e-d Scattering).
- • Developed a simulation package for this proposal to fine-tune the apparatus setup, study the background rejection and estimate the uncertainty budgets.

### Research Assistant @ University of Virginia
Jan 2009 – Jan 2016
• Played a major role in JLab Experiment E08-027 (A Measurement of the Proton Spin Structure Function g2 and the Longitudinal-Transverse Spin Polarizability).
- • Carried out the first measurement result of the g2 structure function of proton at low Q2 region which had not been provided by other experiments.
- • Developed a fast Monte-Carlo simulation package for spectrometer optics study and radiative correction.
- • Developed a more detailed simulation package based on Geant4 to study the performance of the spectrometer.
- • Developed a new optics model to reconstruct the kinematics in a strong transverse target field based on Runge-Kutta method.
- • Wrote a new decoder of the polarity information of the electron beam to handle the high trigger rate in this experiment which is critical for the spin structure function analysis.
- • Assembled a new scintillating detector to cross check the polarization of the electron beam with proton elastic scattering.

• Prepared analysis and monitoring software for the new APV25 data acquaintance system to readout the Gas Electron Multiplier chambers which will be used in multiple JLab 12GeV upgrade projects.


## Education
### Doctor of Philosophy - PhD in Physics
University of Virginia

### Bachelor of Science - BS in Physics
Peking University


## Contact & Social
- LinkedIn: https://linkedin.com/in/chao-gu-8725166b

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Source: https://flows.cv/chaogu
JSON Resume: https://flows.cv/chaogu/resume.json
Last updated: 2026-04-10