Columbia Undergraduates Attend Annual Meeting of the APS Division of Plasma Physics

Jessica Li (SEAS '18) and Tony Qian (CC '18) presented their research at the 59th Annual Meeting of the APS Division of Plasma Physics, held October 23 - 27, 2017 in Milwaukee, Wisconsin.


Jessica Li (pictured above) presented her research conducted during the summer at the Princeton Plasma Physics Laboratory as part of the Science Undergraduate Laboratory Internship (SULI) program [http://www.pppl.gov/education/science-education/programs/suli]. Her research explored the application of high-temperature superconductors (HTS) for next step fusion reactors. Because HTS coils are much more vulnerable to damage during quench events, Jessica used analytic models in FORTRAN and MATLAB to calculate the magnetic fields and resultant forces for various solenoid-like configurations of both high- and low-temperature superconducting coils. Using simulations, she helped to identify optimal designs for both stability and quench protection.

Tony Qian (pictured above) presented his research measuring the frequency-wavenumber power spectrum of plasma turbulence by applying the method of Jack Capon (Ph.D. Electrical Engineering, SEAS 1959) to simultaneous multi-point measurement of plasma entropy modes using an antenna array. Unlike previously reported measurements in which ensemble correlation between two probes detected only the dominant wavenumber, Capon's "maximum likelihood method" uses all available probes to produce a frequency-wavenumber spectrum, showing the existence of modes propagating in both electron and ion magnetic drift directions.

Several Columbia University students and physicists participated in this year’s APS-DPP Meeting, which is the world’s largest and most prestigious meeting of plasma physicists. In addition to Jessica Li and Tony Qian, Dr. Francesca Turco delivered an invited lecture titled "Understanding the stability of the low torque ITER Baseline Scenario in DIII-D.” Dr. Jeff Levesque presented his research titled " Scrape-off-layer currents during MHD activity and disruptions in HBT-EP.” Additionally, graduate students Mel Abler, John Brooks, Spence DeSanto, and Ian Stewart presented research on understanding plasma turbulence cascades and the control and dynamics of the tokamak instabilities. 

Additional information about this year’s APS Division of Plasma Physics Meeting can be found online: http://www.aps.org/units/dpp/meetings/annual/


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