Research Interests:

    Starting from nuclear and particle physics, my research interest evolved into astroparticle physics in late 1990's, with focus on high energy cosmic rays, muons in cosmic ray showers, and high energy neutrino astronomy. I have worked for about 10 years as a research scientist at Bartol Research Institute and the University of Delaware on high-energy cosmic ray and neutrino astronomy projects SPASE-II/AMANDA/IceCube. I joined South Dakota Mines in 2009 to establish research and education programs in particle and astroparticle physics. Since then my research interest has extended to vetoing cosmic ray induced backgrounds, radiological and airborne contamination control for the detection of extremely rare events such as hypothetical dark matter particles. My involvement in the long-baseline neutrino project LBNE/DUNE started in 2010. My duties in this project were passed over to new faculty members in the department in 2015. I had worked on the direct dark matter search experiment Large Underground Xenon (LUX) experiment and the LUX-ZEPLIN (LZ) project between 2010 and 2020.

    Websites of these research projects are:
  • The IceCube Neutrino Observatory (South Pole, Antarctica): AMANDA/SPASE/RICE South-Pole winter-over scientist 1998-1999, member 2002-2009, IceCube Publication Committee member 2007-2010, associate member 2010-2014, full member and IB member since 2014.
    • Working on the R&D of a new 3-D reconstruction of high energy cosmic rays, prompt signals through muons, signal fluctuation properties, etc.
    • Tackling difficulties in obtaining accurate physics insight from multi-messenger astronomy data that are large in size and have enormous complexity.

  • The Long-Baseline Neutrino Experiment: LBNE, LBNF/DUNE: Member since 2010, Radiological & Cleanliness Convenor 2012-2014, institutional representative 2010-2015.

  • LUX Experiment and LZ Experiment: LUX member & Executive Committee member between 2009-2020; LZ member between 2012-2020, institutional representative 2012-2015.
    • Worked on (1) the data from the LUX veto/shielding system and the coincident events between the veto/shielding system and the two-phase Xenon TPC, (2) airborne contamination control and assay, time dependent properties of dark matter signals in LZ.
    • Resigned from the LUX and LZ Collaboration on May 25, 2020 in order to focus on leading the "RII Track-2 FEC: The IceCube EPSCoR Initiative (IEI) - IceCube and the Data Revolution" project.

Courses Taught Since 2009:

    1. Physics Courses:
            PHYS-183 Elements of Modern Astronomy (3 credits)
            PHYS-211 University Physics I (3 credits)
            PHYS-341/441/541 Thermodynamics (2 credits)
            PHYS-343/443/543 Statistical Physics (2 credits)
            PHYS-433/533 Nuclear and Elementary Particle Physics (3 credits)
            PHYS-451/551 Classical Dynamics (4 credits)
            PHYS-481/581 Mathematical Physics (4 credits, shared)
            PHYS-491-IND Independent Study (of astroparticle physics topics) (2 credits)
            PHYS-733 Exp. Particle Physics: Principles, Data Analysis, and Simulation
                              (3 credits, new course, first implemented by me in 2013)
            PHYS-761 Nuclear and Particle Physics (3 credits)
            PHYS-764 Physics of Neutrinos
                              (3 credits, new course, first implemented by me in 2017)
            PHYS-773 Quantum Mechanics II (3 credits)

    2. Labs and Physics Designs Courses:
            PHYS-111L Introduction to Physics I Laboratory (1 credits)
            PHYS-113L Introduction to Physics II Laboratory (1 credits)
            PHYS-213L University Physics II Laboratory (1 credits)
            PHYS-312 Experimental Physics Design I (2 credits)
            PHYS-314 Experimental Physics Design II (2 credits)
            PHYS-412 Advanced Design Projects I (3 credits)
            PHYS-414 Advanced Design Projects II (4 credits)