Dr. Stephen Vincena, Research Physicist

Office: 1000 Veteran, Room 15-70
Phone: (310) 267-5522

Research Interests:
Experimental propagation of shear Alfvén waves into nonuniform and multi-ion-species plasmas; theoretical analysis of such systems with the use of plasma kinetic theory to model ion-cyclotron damping and electron energiziation via electron Landau damping; resistive drift wave experiments in field-aligned density depletions with quasi-periodic density gradient relaxation via wave-induced cross-field transport; production of high-density plasmas within an ambient magnetoplasma using solid target irradiation by short-pulse lasers, and the subsequent fully self-consistent generation of Alfvén waves, electromagnetic and quasi-electrostatic whistler waves, electron beams and magnetic reconnection.

Ph.D. (Physics), University of California, Los Angeles, 1999
Master of Science (Physics), University of California, Los Angeles, 1992
Bachelor of Science (Physics), California Polytechnic State University, San Luis Obispo, summa cum laude, 1991

Professional Organizations and Service:
Member of the American Physical Society (APS)
Member of the 2010 & 2013 APS Division of Plasma Physics Program Committee
Member of the American Geophysical Union
Co-Special-Session Organizer for the 2012 National Radio Science Meeting, Boulder, CO
Reviewer for Physics of Plasmas, Journal of Geophysical Research, Plasma Physics and Controlled Fusion, Energies, IEEE Transactions on Plasma Science, Planetary and Space Science

Selected Publications:
1. Vincena, S.T., Farmer, W.A., Maggs, J.E., and Morales, G.J., Investigation of an ion-ion Alfvén wave resonator, Phys. Plasmas 20, 012111, 2013.
2. Vincena, S.T., Morales, G.J, and Maggs, J.E., Effect of two ion species on the propagation of shear Alfvén waves of small transverse scale, Phys. Plasmas 17, 052106, 2010.
3. Vincena, S., Gekelman, W., Van Zeeland, M.A., Maggs, J., and Collette, A., Quasielectrostatic whistler wave radiation from the hot electron emission of a laser-produced plasma, Phys. Plasmas 15, 072114, 2008.
4. Vincena S., Gekelman W., and Maggs J., Shear Alfvén wave perpendicular propagation from the kinetic to the inertial regime. Phys. Rev. Lett. 93 (10), 2004.
5. Vincena, S., Gekelman, W., and Maggs, J., Shear Alfvén waves in a magnetic beach and the roles of electron and ion damping, Phys. Plasmas 8 (9), 2001.

Dr. Shreekrishna Tripathi, Associate Research Physicist

Office: 1000 Veteran Avenue
Phone: (310) 206-3071

Research Interests:
Researched on a variety of topics relevant to fusion, laboratory, and solar plasmas. These topics include fast-ion physics relevant to fusion plasmas; laboratory simulation of solar plasma structures; electron and ion beam sources; RF current drive and heating; hot cathode, magnetized arc, RF, and microwave plasma sources; plasma waves; numerical modeling of toroidal plasmas; and plasma antennae.

Ph.D. (Plasma Physics), 2002, Institute for Plasma Research, Gandhinagar, Gujarat, India
Master of Science (Physics), 1995, D. D. U. Gorakhpur University, Gorakhpur, U.P., India
Bachelor of Science, 1992, D. D. U. Gorakhpur University, Gorakhpur, U.P., India

Professional organizations:
American Physical Society, American Geophysical Union

Selected Publications:
1. S. K. P. Tripathi and W. Gekelman, “Laboratory Simulation of Arched Magnetic Flux Rope Eruptions in the Solar Atmosphere,” Physical Review Letters 105, (August 2010), pp. 075005.
2. S. K. P. Tripathi, P. Pribyl, and W. Gekelman, “Development of a radio-frequency ion beam source for fast-ion studies on the large plasma device,” Review of Scientific Instruments 82, (2011), pp. 093501
3. S. K. P. Tripathi, P. M. Bellan, and G. S. Yun, “Observation of Kinetic Plasma Jets in a Coronal-Loop Simulation Experiment,” Physical Review Letters 98, (2007), pp. 135002
4. S. K. P. Tripathi and D. Bora, “Normal modes of bounded whistler produced toroidal plasmas,” Physics of Plasmas 8(3), (March 2001), pp. 697
5. S. K. P. Tripathi and D. Bora, “Current drive by toroidally bounded whistlers,” Nuclear Fusion 42(10), (October 2002), pp. L15
6. J. F. Hansen, S. K. P. Tripathi, and P. M. Bellan, “Co­ and counter­ helicity interaction between two adjacent laboratory prominences,” Physics of Plasmas 11(6), (June 2004), pp. 3177.

Dr. Bart Van Compernolle, Assistant Research Physicist

Office: 1000 Veteran, Rm 15-70
Phone: (310) 206-0360

Deinze, Belgium, October 10, 1978. Permanent U.S. resident

M. S. in Engineering/Applied physics (summa cum laude), Ghent University, 2001
M. S. in Physics, University of California, Los Angeles, 2002
Ph. D. in Physics, University of California, Los Angeles, 200

Areas of specialization:
Experimental plasma physics, plasma diagnostics, plasma sources, plasma waves and wave-particle interactions, RF heating, basic plasma physics experiments related to both space plasmas and tokamak edge physics.

Honors: Francqui Foundation Fellow, 2001-2002
Belgian American Educational Foundation Fellow, 2001-2002
UCLA Physics and Astronomy Graduate Fellow, 2001-2005
Phi Beta Kappa International Award, 2005-2006

Professional Societies:
American Physical Society
Topical group in Plasma Astrophysics of American Physical Society
American Geophysical Union

Positions held:
Postdoctoral researcher, Laboratory for Plasma Physics, Royal Military Academy of Belgium, July 2006 – December 2008
Assistant researcher, Laboratory for Plasma Physics, Royal Military Academy of Belgium, January 2009 – March 2009
Assistant researcher, Basic Plasma Science Facility, University of California, Los Angeles, May 2009 – present

Recent Publications:
1. B. Van Compernolle and W. Gekelman, "Morphology and dynamics of three interacting kink-unstable flux ropes in a laboratory magnetoplasma", Phys. Plasmas 19 (10):102102 (2012).
2. W. Gekelman, E. Lawrence and B. Van Compernolle, "Three dimensional reconnection involving magnetic flux ropes", Astrophysical Journal 753 (2):131 (2012).
3. B. Van Compernolle, S. Tripathi, W. Gekelman, P. Pribyl and P. Colestock, "Ion beam generated modes in the lower hybrid frequency range in a laboratory magnetoplasma", ECA 36F, P-2.167 (2012).
4. S. Zhou, W. W. Heidbrink, H. Boehmer, R. McWilliams, T. A. Carter, S. Vincena, S. K. P. Tripathi and B. Van Compernolle, "Thermal plasma and fast ion transport in electrostatic turbulence in the Large Plasma Device", Phys. Plasmas 19 (5):055904 (2012).
5. B. Van Compernolle, W. Gekelman, P. Pribyl and C. M. Cooper, "Wave and transport studies utilizing dense plasma filaments generated with a lanthanum hexaboride cathode", Phys. Plasmas 18 (12):1235011 (2011), doi:10.1063/1.3671909.
6. W. Gekelman, S. Vincena, B. Van Compernolle, G. J. Morales, J. E. Maggs, P. Pribyl and T. A. Carter, "The many faces of the shear Alfven wave", Phys. Plasmas 18(5):055501 (2011).

Patrick Pribyl, Project Scientist

Office: 1040 Veteran 15-70
Phone: (310) 267-1772

Ph.D, M.S., B.S., Massachusetts Institute of Technology

Professional Societies:
Institute of Electrical and Electronics Engineers
American Association for the Advancement of Science
American Physical Society

Positions Held:
Project Scientist and Principal Development Engineer, UCLA, July 2010 – current
Principal Development Engineer, UCLA November 2001 – July 2010
CEO, Plasma Control Systems LLC, July 2003 – July 2010
Director of Research, Required Technologies, October 1999 – July 2003
Research Scientist, Innovative Research and Technology, October 1998 – October 1999