Los Alamos National Laboratory

Los Alamos National Laboratory

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Andrew Thomas Till

Andrew Till

Email
Phone (505) 665-6673

Capabilities

  • Computational Physics and Applied Mathematics
  • Numerical modeling
  • Coupled multi-physics simulations
  • Partial differential equations
  • Monte Carlo methods
  • High-energy multi-material compressible radiation hydrodynamics
  • Jacobi-Free Newton Krylov Methods
  • Applied Math
  • Deterministic Transport
  • Mimetic finite difference methods for PDEs
  • Monte Carlo N-Particle (MCNP) Transport Code
  • Uncertainty quantification
  • Computer and Computational Sciences
  • High performance computing
  • Nuclear Engineering and Technology
  • Nuclear engineering
  • Reactor design methods and tools
  • Radiation transport code development and applications
  • Nuclear and Particle Physics, Astrophysics, and Cosmology
  • Machine learning

Expertise

  • Computational Physics
  • Numerical Analysis
  • Applied Mathematics
  • Radiation Transport

Education

  • Ph.D. in Nuclear Engineering, Texas A&M University, 2015.
  • M.S. in Nuclear Engineering, Texas A&M University, 2014.
  • B.S.E. in Nuclear Engineering and Radiological Sciences, University of Michigan, 2010.
 

LANL Positions

  • Nicholas C. Metropolis Postdoc Fellow, Computational Physics and Methods Group (CCS-2), 2016 to present
 

Professional Societies

  • Society for Industrial and Applied Mathematics
  • American Nuclear Society
 

Awards

  • Computational Science Graduate Fellow (CSGF), 2012 to 2015.
 

Publications

  1. T.S. Haut, C. Ahrens, A. Jonko, R. Lowrie, and A. T. Till. A New Multigroup Method for Cross-Sections that Vary Rapidly in Energy. Journal of Quantitative Spectroscopy and Radiative Transfer, 2016 (submitted).

  2. A. T. Till, M. Hanus, J. Lou, J. E. Morel, and M. L. Adams. Comparisons of the Finite-Element-with-Discontiguous-Support Method to Continuous-Energy Monte Carlo for Pin-Cell Problems. In The International Conference on the Physics of Reactors (PHYSOR) - Unifying Theory and Experiments in the 21st Century, Sun Valley, ID, USA, May 2016. American Nuclear Society.

  3. A. T. Till, M. L. Adams, and J. E. Morel. The Finite Element with Discontiguous Support Multigroup Method: Application. In The Joint International Conference on Mathematics and Computation (M&C), Supercomputing in Nuclear Applications (SNA), and the Monte Carlo (MC) Method, Nashville, Tennessee, May 2015. American Nuclear Society.

  4. A. T. Till, M. L. Adams, and J. E. Morel. The Finite Element with Discontiguous Support Multigroup Method: Theory. In The Joint International Conference on Mathematics and Computation (M&C), Supercomputing in Nuclear Applications (SNA), and the Monte Carlo (MC) Method, Nashville, Tennessee, May 2015. American Nuclear Society.

  5. M. P. Adams, M. L. Adams, C. N. McGraw, A. T. Till, and T S Bailey. Provably Optimal Parallel Transport Sweeps with Non-Contiguous Partitions. In The Joint International Conference on Mathematics and Computation (M&C), Super-computing in Nuclear Applications (SNA), and the Monte Carlo (MC) Method, Nashville, Tennessee, May 2015. American Nuclear Society.

  6. A. T. Till, M. L. Adams, and J. E. Morel. A Generalized Multigroup Method Based on Finite Elements. In The International Conference on the Physics of Reactors (PHYSOR) - The Role of Reactor Physics toward a Sustainable Future, Kyoto, Japan, Oct. 2014. American Nuclear Society. (Best student paper)

  7. T. A. Brunner, T. V. Kolev, T. S. Bailey, and A. T. Till. Preserving Spherical Symmetry in Axisymmetric Coordinates for Diffusion Problems. In The International Conference on Mathematics and Computational (M&C) Methods applied to Nuclear Science and Engineering, Sun Valley, ID, USA, May 2013.

  8. A. T. Till, M. L. Adams, and J. E. Morel. Application of Nonlinear Krylov Acceleration to Radiative Transfer Problems. In The International Conference on Mathematics and Computational (M&C) Methods applied to Nuclear Science and Engineering, Sun Valley, ID, USA, May 2013.

 

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