Benjamin John Tobias



  • Masters of Science in Electrical and Computer Engineering
    University of California at Davis
    Design and Implementation of an Electron Cyclotron Emission Imaging Diagnostic for the TEXTOR Tokamak
    September 2009
  • Bachelor of Science in Electrical Engineering
    Arizona State University
    May 2007
  • Associate of Applied Science in Electronic Systems Technology
    Community College of the Air Force
    RAF Mildenhall, Suffolk, UK
    February 2003

Professional Experience

  • Wideband, Satellite Communications, and Telemetry Journeyman
    422 Air Base Squadron, 100th Air Refueling Wing, United States Air Forces Europe
    RAF Croughton, Northamptonshire, UK
    Senior Airman, E-4, AFSC 2E151
    July 2001 to 2004


  • University of California at Davis Plasma Diagnostics Group
    Graduate Student Researcher
    June 2007 to present

Research Interests

  • Microwave and Millimeter wave diagnostics for magnetically confined fusion plasmas, including radiometry, reflectometry, and interferometry.
  • Magnetohydrodynamic (MHD) phenomena and turbulence in fusion plasmas.
  • Plasma heating and current drive.
  • Development of millimeter wave and sub-THz frequency sources, amplifiers, mixers, etc.
  • Antennas, optics, and quasi-optical frequency filters.

Research Activities

Development of Electron Cyclotron Emission Imaging (ECEI) and Microwave Imaging Reflectometer (MIR) diagnostics and numerical data evaluation techniques for the study of MHD and microturbulence observed as temperature and density fluctuations in tokamak plasmas.

Selected Publications

  • B. Tobias, X. Kong, T. Liang, A. Spear, C.W. Domier, I.G.J. Classen, J.E. Boom, M.J. van de Pol, R. Jaspers, A.J.H. Donné, H.K. Park, T. Munsat, and N.C. Luhmann Jr., Advancements in electron cyclotron emission imaging demonstrated by the TEXTOR ECEI diagnostic upgrade, Review of Scientific Instruments 80, 093502 (2009)
  • B. Tobias, C.W. Domier, A.J.H. Donné, R. Jaspers, X. Kong, T. Liang, M. Smith, R. Nazikian, H.K. Park and N.C. Luhmann, Jr., A New and Highly Flexible Dual Array Electron Cyclotron Emission Imaging Diagnostic for DIII-D, in proceedings of the Asia-Pacific Microwave Conference 2009, December 7-10, Singapore
  • B. Tobias, C.W. Domier, A.J.H. Donné, R. Jaspers, X. Kong, T. Liang, H.K. Park, and N.C. Luhmann, Jr., Dual Array ECE Imaging on the DIII-D Tokamak, in proceedings of the 34th International Conference on Infrared, Millimeter and Terahertz Waves, 21-25 September, 2009, Busan, Republic of South Korea
  • G.S. Yun, W. Lee, M.J. Choi, J. Kim, H.K. Park, B. Tobias, C.W. Domier, T. Liang, X. Kong, N.C. Luhmann, Jr., ECE Imaging for KSTAR, in proceedings of the 19th International Toki Conference on Advanced Physics in Plasma and Fusion Research, December 8-11, 2009, Gifu, Japan
  • T. Munsat, C.W. Domier, X. Kong, T. Liang, N.C. Luhmann, Jr., B. Tobias, W. Lee, H.K. Park, G. Yun, I.G.J. Classen, A.J.H. Donné, Electron Cyclotron Emission Imaging in Tokamak Plasmas, Applied Optics, accepted for publication December 2009