Programs

Erik Brubaker

Erik Brubaker

Bio

Erik Brubaker is a staff physicist working on radiation and nuclear detection systems for nuclear non-proliferation applications. His research is focused on fission-energy neutron detection and imaging. He has experience in data reduction and analysis, calibration techniques, and image reconstruction methods, as well as a particular interest in approaches to arms control treaty verification.

Erik has served as principal investigator on a number of research projects. These include development of a high-efficiency single-volume fast neutron imaging spectrometer, using high-resolution photodetectors based on microchannel plates; development, characterization, and testing of a high-sensitivity neutron scatter camera for fast neutron detection and imaging; arms control application studies using a fast neutron coded aperture imaging system; demonstration of fast neutron and gamma imaging using time-encoding techniques; demonstration of bubble masks for adaptive encoding in time-modulated imaging; a study of an He-3 alternative using Li-6 with alkali halide scintillators for thermal neutron detection and gamma discrimination; and investigation of the neutron response anisotropy of crystalline organic scintillators.

Erik joined the radiation detection group at Sandia California in 2008 after beginning his career in experimental particle physics, including a postdoctoral research appointment at the University of Chicago/Enrico Fermi Institute. He has a BA in physics from Lawrence University (Appleton, WI) and a Ph.D. in particle physics from U.C. Berkeley.

Selected Publications

Radiation detection publications and proceedings

P. Schuster and E. Brubaker, "Investigating the anisotropic scintillation response in anthracene through neutron, gamma-ray, and muon measurements," arXiv:1511.00081 [physics.ins-det] (accepted to IEEE Trans.\ Nucl.\ Sci.).

C. J. MacGahan, M. A. Kupinski, N. R. Hilton, E. M. Brubaker and W. C. Johnson, "Development of an ideal observer that incorporates nuisance parameters and processes list-mode data," J. Opt. Soc. Am. A 33, 689-697 (2016). [doi:10.1364/JOSAA.33.000689].

J. Brennan, E. Brubaker, M. Gerling, P. Marleau, K. McMillan, A. Nowack, N. Renard-Le Galloudec, M. Sweany, "Demonstration of two-dimensional time-encoded imaging of fast neutrons," Nucl. Instrum. Meth. A 802, 76 (2015). [doi:10.1016/j.nima.2015.08.076].

E. Brubaker, "A Maximum Likelihood Expectation Maximization Iterative Image Reconstruction Technique for Mask/Anti-mask Coded Aperture Data," In 2013 IEEE Nuclear Science Symposium Conference Record. IEEE, 2013.

J. Brennan, E. Brubaker, A. Nowack, J. Steele, M. Sweany, D. Throckmorton, "Bubble Masks for Time- Encoded Imaging of Fast Neutrons," In 2013 IEEE Nuclear Science Symposium Conference Record. IEEE, 2013.

E. Brubaker, D. Dibble, and P. Yang, "Thermal neutron detection using alkali halide scintillators with 6Li and pulse shape discrimination," Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), IEEE, 2011, pp.2006-2009, 23-29 Oct. 2011. [doi:10.1109/NSSMIC.2011.6154408].

J. Brennan, E. Brubaker, M. Gerling, P. Marleau, A. Nowack, and P. Schuster. "Time-Encoded Imaging of Energetic Radiation." edited by M. Fiederle, A. Burger, L. Franks, and R. B. James, 885203, 2013. [doi:10.1117/12.2027674].

Brennan, J., E. Brubaker, R. Cooper, M. Gerling, C. Greenberg, P. Marleau, N. Mascarenhas, and S. Mrowka. "Measurement of the Fast Neutron Energy Spectrum of an 241Am-Be Source Using a Neutron Scatter Camera." IEEE Transactions on Nuclear Science 58, no. 5 (October 2011): 2426-2430. [doi:10.1109/TNS.2011.2163192].

Brubaker, E., J. Brennan, N. Hilton, P. Marleau, and J. Steele. "Calibration and simulation of a coded aperture neutron imaging system." 2009 IEEE Nuclear Science Symposium Conference Record (NSS/MIC). IEEE, 2009. [doi:10.1109/NSSMIC.2009.5401564].

HEP publications

T. Aaltonen et al. (CDF Collaboration), "First Direct Bound on the Total Width of the Top Quark in p-pbar Collisions at sqrt(s) = 1.96 TeV," Phys. Rev. Lett. 102, 042001 (2009). [doi:10.1103/PhysRevLett.102.042001].

A. Abulencia et al. (CDF collaboration), "Precision Top-Quark Mass Measurement in the Lepton+Jets Topology in p-pbar Collisions at sqrt(s) = 1.96 TeV." Phys. Rev. Lett. 96, 022004 (2006). [doi:10.1103/PhysRevLett.96.022004].

Patents

P. Marleau, E. Brubaker, S. Kiff. 2013. Time encoded radiation imaging. U.S. Patent 8,866,100, filed August 26, 2013, and issued October 21, 2014.