Associate Professors
ZHENG Lianmin
Associate Professor

Ph.D.

Tel: 010-62795061

Email: zhenglm2019@mail.tsinghua.edu.cn

Educational Background

2014.09-2019.07 Tsinghua University, Department of Engineering Physics, received the Ph.D. degree of Engineering in Nuclear Science and Technology

2010.08-2014.07 Tsinghua University, Bachelor of Engineering, Department of Engineering Physics, majoring in Engineering Physics.


Work Experience

2024.12-Present Associate Researcher, Department of Engineering Physics, Tsinghua University

2021.08-2024.12 Assistant Researcher, Department of Engineering Physics, Tsinghua University

2019.07-2021.07 Postdoctoral Fellow, Department of Engineering Physics, Tsinghua University


Teaching work

Supervision of 2 master's degree students (in progress)


Research Field

Mainly engaged in research on the generation, manipulation, diagnosis and application of high brightness electron beams, including:

1. development of photocathode rf electron guns, including electromagnetic simulation, thermodynamic simulation, and processing of electron guns;

2. the preparation, measurement and key physical studies of semiconductor photocathode, and the optimization of cathode performance from the three dimensions of lifetime, quantum efficiency, and thermal emittance;

3. research on beam dynamics of high-brightness electron beams, mainly including research on theories, simulation methods and experimental techniques of beam transport, optimization of beam emittance, and advanced beam compression technologies, etc;

4. applied research on high-brightness electron beam, including ultrafast electron diffraction, Thomson scattering sources, free-electron lasers, etc.


Research Situation

2024-2028, Development of Shenzhen Very High Frequency Electron Gun, commissioned by enterprises and institutions, key participant

2024-2027, Development of High Current Intensity Electron Source for SSMB, National Key R&D Program, Project Leader

2024-2026, Development of photocathode DC electron gun and cathode exchange system, entrusted by enterprises and institutions, project leader

2024-2025, Cavity Design of New Electron Accelerator, Entrusted by Enterprise and Public Institution, Project Leader

2023-2026, Research on key technology of high-frequency and time-resolved ultrafast electron diffraction, National Natural Science Foundation of China (NSFC), Project Leader.

2022-2026, Atomic-scale time-resolved high-energy electron diffraction technology for liquid-phase matter, National Key Research and Development Program of China (Frontier Research on Large Science Devices), Principal Participant

2019-2024, Multi-amplitude Dynamic Ultrafast Imaging Technology Research and Development and Principle Verification, National Key R&D Program of China (Frontier Research on Large Science Devices), Sub-theme Leader


Academic Achievements

[1] Xia, Q., Zheng, L., & Du, Y.. Experimental investigation of the feasibility of in situ plasma cleaning in normal-conducting copper cavities. Journal of Vacuum Science & Technology B, 43(2). (2025)

[2] Zheng, Lianmin, et al. "Design, fabrication, and beam commissioning of a 216.667 MHz continuous-wave photocathode very-high-frequency electron gun." Physical Review Accelerators and Beams 26.10 (2023): 103402.

[3] Zheng LM, Du YC, Huang PW. Eliminating uncertainty of thermal emittance measurement in solenoid scans due to rf and solenoid fields overlap. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2022, 1025: 166149.

[4] Chen H, Zheng LM, Huang PW, et al. Analysis of slice transverse emittance evolution in a very-high-frequency gun photoinjector. Physical Review Accelerators and Beams, 2021, 24(12): 124402.

[5] Zheng L M, Shao J H, Wisniewski E E, et al. Rapid thermal emittance and quantum efficiency mapping of a cesium telluride cathode in an rf photoinjector using multiple laser beamlets. Physical Review Accelerators and Beams, 23(5): 052801, 2020.

[6] Zheng L M, Shao J H, Du Y C, et al. Experimental demonstration of the correction of coupled-transverse-dynamics aberration in an rf photoinjector. Physical Review Accelerators and Beams, 22(7): 072805, 2019.

[7] Zheng L M, Shao J H, Du Y C, et al. Overestimation of thermal emittance in solenoid scans due to coupled transverse motion. PHYSICAL REVIEW ACCELERATORS AND BEAMS, 21, 122803, 2018.

[8] Zheng L M, Du Y C, Tang C X, et al. Effects of laser pulse heating of copper photocathodes on high-brightness electron beam production at blowout regime. Chinese Physics C, 2017, 41(6): 067002.

[9] Zheng L M, Du Y C, Zhang Z, et al. Development of S-band photocathode RF guns at Tsinghua University. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 834: 98-107, 2016.

[10] Zheng L M, Du Y, Huang W, et al. Simulation of dark current and dark current-induced background photons in the Thomson scattering X-ray source[J]. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2015, 800: 12-17.


Award honors

First Prize of “Hope Cup” Youth Outstanding Thesis Competition, Accelerator Branch, Chinese Nuclear Society, 2024

First Prize of Beijing Science and Technology Progress Award, 2020 (Rank 9)


    • Address : Department of Engineering Physics, Tsinghua University (Liu Qinglou)
    • Zip code:100084
    • Phone:010-62785727
    • E-mail:gwbgs@mail.tsinghua.edu.cn
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