Gerard Lawler

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Career Info


I am a PhD physicist currently working on the development of compact particle accelerators. My primary expertise lies at the intersection of simulation, experimental physics, and hardware development. My primary interests are focused on miniaturization and cost reduction of particle accelerators and increasing their availabilty to academia and industry. I have extensive experience in the field including development of accelerators for application such as imaging and medicine. In the past, I focused most on producing high brightness electron beams using high gradient accelerating cavities and high brightness cathodes enabled by cryogenic operation but I have developed additional experience in cryogenics and THz technology. Below are several documents most relevent to give a picture of my interests and experience.

Application Material


  • 2-page Resume
  • Curriculum vitae

    • Selected Publications


    1. G. E. Lawler. 2024. “Improvements to Normal Conducting High Gradient Accelerator Performance at Cryogenic Temperatures” UCLA https://escholarship.org/uc/item/69h7615v#author.

    2. G. Lawler, F. Bosco, M. Carillo, A. Fukasawa, Z. Li, N. Majernik, Y. Sakai, S. Tantawi, O. Williams, M. Yadav, and J. Rosenzweig. 2024. “Improving Cathode Testing with a High-Gradient Cryogenic Normal Conducting RF Photogun.” Instruments 8(1), 14. https://doi.org/10.3390/instruments8010014.

    3. J.B. Rosenzweig, N Majernik, R R Robles, G Andonian, O Camacho, A Fukasawa, A Kogar, et al. 2020. “An Ultra-Compact x-Ray Free-Electron Laser.” New Journal of Physics 22 (9): 093067. https://doi.org/10.1088/1367-2630/abb16c.

    4. G. Lawler, K. Sanwalka, Y. Zhuang, V. Yu, T. Paschen, R. Robles, O. Williams, Y. Sakai, B. Naranjo, and J. Rosenzweig. 2019. “Electron Diagnostics for Extreme High Brightness Nano-Blade Field Emission Cathodes.” Instruments 3 (4). https://doi.org/10.3390/instruments3040057.

    5. J.B. Rosenzweig, A. Cahill, B. Carlsten, G. Castorina, M. Croia, C. Emma, A. Fukusawa, et al. 2018. “Ultra-High Brightness Electron Beams from Very-High Field Cryogenic Radiofrequency Photocathode Sources.” Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 909: 224–28. https://doi.org/https://doi.org/10.1016/j.nima.2018.01.061.