• Moses Chung (정모세)

  • Associate Professor
  • Intense Beam and Accelerator Physics
  • Current Research Interests

    Several large-scale accelerator facilities are operational or under construction in Korea, such as the Korea Multi-purpose Accelerator Complex (KOMAC) in Gyeongju, the Synchrotron Light Source (PLS-II) and the X-ray Free Electron Laser (PAL-XFEL) in Pohang, the Rare Isotope Science Project (RISP) in Daejeon, and the Korea Heavy Ion Medical Accelerator (KHIMA) in Gijang  (plus a new 4th Generation Storage Ring is being planned in Cheongju). By using advanced beam physics models and simulation tools, cutting-edge beam diagnostics, and sophisticated beam manipulation techniques, we aim to optimize and improve the performance of those accelerators. Furthermore, we will try to develop transformational technologies for the next-generation high-intensity accelerators such as the International Fusion Materials Irradiation Facility (IFMIF), Accelerator Driven System (ADS), and Heavy Ion Fusion (HIF). Applications of the accelerators to laboratory astrophysics and cancer therapy will also be actively pursued.

    본 연구실에서는 새로운 빔 물리 모형 및 수치해석 코드, 첨단 빔 진단 및 제어 장치를 활용하여, 국내외에 운영 또는 건설 중인 대형 가속기의 구축, 최적화 및 성능향상에 기여하고, 나아가 지금보다  가속 효율이  10~100 배 높은 첨단 고강도 가속기 개발에 필요한 물리적-기술적 난제에 도전한다. 이러한 첨단 가속기는 핵융합 재료 연구, 핵폐기물 처리, 우주의 신비 탐구, 암 치료 등 인류가 당면한 여러 문제를 해결하는 데 필수적인 첨단기술이다.

    Research Interest

    • Beam physics with intense self-fields and strong coupling
    • Advanced beam diagnostics and manipulations
    • Beam-plasma interactions and advanced accelerators (Wakefields/Muon)
    • Plasma and beam physics using ion and electron traps
    • High-intensity accelerator R&D for future nuclear energy (Nuclear Data, IFMIF, ADS, and HIF)

    Research Groups at UNIST

    • Ion Traps / Beam Manipulations
    • Beam-Driven Wakefields / Advanced Accelerators
    • High-Intensity Accelerator Physics / Beam Diagnostics
  • Biographical Sketch


    • 2008: Ph. D. Plasma Physics, Princeton University
      – Advisor: Prof. Ronald C. Davidson
      – Thesis: “Studies of charged particle beam dynamics on the Paul trap simulator experiment pure ion plasma”
    • 1996: M. S. Nuclear Engineering (Nuclear Fusion Major), Seoul National University
    • 1994: B. S. Nuclear Engineering, Seoul National University


    • 2014~: Ulsan National Institute of Science and Technology (UNIST)
    • 2012~2014: Peoples Fellow / Associate Scientist, Accelerator Physics Center, Fermi National Accelerator Laboratory
    • 2010~2012: Assistant Professor, Handong Global University at Pohang
    • 2008~2010: Postdoc, Accelerator Physics Center, Fermi National Accelerator Laboratory
    • 2001~2008: Research Assistant, Princeton Plasma Physics Laboratory


    • 2012: Peoples Fellowship, Fermi National Accelerator Laboratory
  • Selected Publications

    [10] The MICE Collaboration (including M. Chung), “Demonstration of cooling by the Muon Ionization Cooling Experiment”, Nature 578, 53 (2020).
    [9] The AWAKE Collaboration (including M. Chung), “Acceleration of electrons in the plasma wakefield of a proton bunch”, Nature 561, 363 (2018).
    [8] M. Chung, H. Qin, R. C. Davidson, L. Groening, and C. Xiao, “Generalized Kapchinskij-Vladimirskij Distribution and Beam Matrix for Phase-Space Manipulations of High-Intensity Beams”, Physical Review Letters 117, 224801 (2016).
    [7] L. Groening, M. Maier, C. Xiao, L. Dahl, P. Gerhard, S. Mickat, H. Vormann, M. Vossberg, and M. Chung, “Experimental Proof of Adjustable Single-Knob Ion Beam Emittance Partitioning”, Physical Review Letters 113, 264802 (2014).
    [6] S. G. Arutunian, A. E. Avetisyan, M. A. Davtyan, G. S. Harutyunyan, I. E. Vasiniuk, M. Chung, and V. Scarpine, “Large Aperture Vibrating Wire Monitor with Two Mechanically Coupled Wires for Beam Halo Measurements”, Physical Review Accelerators and Beams 17, 032802 (2014).
    [5] M. Chung et al., “Pressurized H2 RF Cavities in Ionizing Beams and Magnetic Fields”, Physical Review Letters 111, 184802 (2013).
    [4] H. Qin, R. C. Davidson, M. Chung, and J. W. Burby, “Generalized Courant-Snyder Theory for Charged Particle Dynamics in General Focusing Lattices”, Physical Review Letters 111, 104801 (2013).
    [3] M. Chung, E. P. Gilson, R. C. Davidson, P. C. Efthimion, and R. Majeski, “Use of a Linear Paul Trap to Study Random-Noise Induced Beam Degradation in High-Intensity Accelerators”, Physical Review Letters 102, 145003 (2009).
    [2] H. Qin, M. Chung, and R. C. Davidson, “Generalized Kapchinskij-Vladimirskij Distribution and Envelope Equation for High-Intensity Beams in a Coupled Transverse Focusing Lattice”, Physical Review Letters 103, 224802 (2009).
    [1] M. Chung, E. P. Gilson, M. Dorf, R. C. Davidson, P. C. Efthimion, and R. Majeski, “Experiments on Transverse Compression of a Long Charge Bunch in a Linear Paul Trap”, Physical Review Accelerators and Beams 10, 064202 (2007).