# Publications

### Journal Publications

- A. Haghighat, K. Royston, and W. Walters, "MRT Methodologies for Real-time Simulation of Nonproliferation and Safeguards Problems,"
*Annals of Nuclear Energy*, 2015. - K. Royston, A. Haghighat, W. Walters, C. Yi, G. Sjoden, "Determination of Current at a Detector Window Using a Hybrid Adjoint Function Methodology,"
*Progress in Nuclear Science and Technology*, Vol. 4, pp. 528, 2014. - W. Walters, A. Haghighat, K. Royston, C. Yi, G. Sjoden, "A Response Function Methodology to Calculate Induced Fission Neutron Flux Distribution in an Active Interrogation System,"
*Progress in Nuclear Science and Technology*, Vol. 4, pp. 533, 2014. - A. Haghighat, K. Royston, G. Sjoden, C. Yi, M. Huang, "Unique Formulations in TITAN and PENTRAN for Medical Physics Applications,"
*Progress in Nuclear Science and Technology*, Vol. 4, pp. 883, 2014. - K. Royston, A. Haghighat, W. Walters, C. Yi, G. Sjoden, "Determination of Current at a Detector Window Using a Hybrid Adjoint Function Methodology,"
*Progress in Nuclear Science and Technology*, 2013,*submitted* - W. Walters, A. Haghighat, K. Royston, C. Yi, G. Sjoden, "A Response Function Methodology to Calculate Induced Fission Neutron Flux Distribution in an Active Interrogation System,"
*Progress in Nuclear Science and Technology*, 2013,*submitted* - W. Walters, A. Haghighat, Y. Ham, S Sitaraman, "Development of INPCT-S for Inspection of Spent Fuel Pool",
*Journal of ASTM International*, Volume 9 Issue 4 (2012) - K. Royston, A. Haghighat, C. Yi, "Comparison of TITAN Hybrid Deterministic Transport Code and MCNP5 for Simulation of SPECT,"
*Progress in Nuclear Science and Technology*, Vol. 2, pp. 201, 2011.

### Conference Proceedings

- W. Walters, N. Roskoff, and A. Haghighat, "A Fission Matrix Approach to Calculate Pin-wise 3D Fission Density Distribution,"
*Proc. M&C 2015*, Nashville, Tennessee, April 19-23, 2015. - W. Walters, N. Roskoff, and A. Haghighat, "Use of the Fission Matrix Method for Solution of the Eigenvalue Problem in a Spent Fuel Pool,"
*Proc. PHYSOR 2014*, Kyoto, Japan, Sep. 28-Oct 3, 2014. - N. Roskoff, W. Walters, A. Haghighat, C. Yi, and G. Sjoden, "Implementation and Verification of the SDM in the TITAN 3-D Sn Transport Code,"
*Proc. PHYSOR 2014*, Kyoto, Japan, Sep. 28-Oct 3, 2014. - N. Roskoff, W. Walters, and A. Haghighat, "Application of the subgroup decomposition method (SDM) for reactor simulation,"
*Proc. 15th ISRD*, Aix en Provence, France, May 18-23, 2014. - W. Walters and A. Haghighat, "ACS Algorithm in Discrete Ordinates for Pressure Vessel Dosimetry,"
*Proc. 15th ISRD*, Aix en Provence, France, May 18-23, 2014. - K. Royston and A. Haghighat, "Preliminary Results of a New Deterministic Iterative Image Reconstruction Algorithm,"
*Proc. ANS RPSD 2014*, Knoxville, TN, September 14-18, 2014. - A. Haghighat, K. Royston, C. Yi, "Application of the TITAN Hybrid Deterministic Transport Code to Medical Physics,"
*Proc. ANS RPSD 2014*, Knoxville, TN, September 14-18, 2014,*invited*. - K. Royston, A. Haghighat, C. Yi, "Application of TITAN for Simulation of Particle Streaming in a Duct,"
*Proc. 15th ISRD*, Aix en Provence, France, May 18-23, 2014. - A. Haghighat, K. Royston, W. Walters, "Development of Methodologies for Ex-core Detector Modeling for SMRs,"
*Proc. ASME 2014 Small Modular Reactors Symposium*, Washington, DC, April 15-17, 2014. - B. Upadhyaya, A. Haghighat, C. Atchley, N. Roskoff, "Curriculum Development on Nuclear Reactor Instrumentation and Controls (I&C),"
*Proc. ANS 2014*, Washington, DC, Nov. 10-14, 2013. - K. Royston and A. Haghighat, "Performance of the New WCOS Technique for the TITAN SPECT Formulation,"
*Proc. SNA+MC 2013*, Paris, France, Oct. 27-31, 2013. - W. Walters and A. Haghighat, "Performance of the Adaptive Collision Source (ACS) Method for Discrete Ordinates in Parallel Environments,"
*Proc. SNA+MC 2013*, Paris, France, October 27-31, 2013. - K. Royston, W. Walters, A. Haghighat, C. Yi, and G. Sjoden, "Development of Active Interrogation for Monitoring Special-Nuclear-Materials (AIMS) Hybrid Tool,"
*Proc. ANS 2013 Annual Meeting*, Atlanta, Georgia, June 16-20, 2013. - K. Royston, W. Walters, A. Haghighat, C. Yi, and G. Sjoden, "Development and Application of a Hybrid Transport Methodology for Active Interrogation Systems,"
*Proc. M&C 2013*, Sun Valley, ID, May 5-9, 2013. - W. Walters and A Haghighat, "Development of the Adaptive Collision Source (ACS) Method for Discrete Ordinates,"
*Proc. M&C 2013*, Sun Valley, Idaho, May 5-9, 2013 - K. Royston and A. Haghighat, "Development of a Collimator Representation in the TITAN Transport Code for SPECT Simulation,"
*Proc. 2012 IEEE NSS-MIC*, Anaheim, CA, Oct. 29-Nov. 3, 2012. - S. Sitaraman, Y. Ham, W. Walters, A. Haghighat, O. Peixoto, "In-Situ Verification of Spent Fuel at Atucha-I Nuclear Power Plant,
*Proc. INMM 52nd Annual Meeting*, Palm Desert, CA, July 17-21, 2011 - K. Royston, A. Haghighat, C. Yi, A. Cebula, D. Gilland, "Validation of a New Hybrid Deterministic Transport Code for SPECT Simulation,"
*Proc. 2010 IEEE NSS-MIC*, Knoxville, TN, Oct. 30-Nov. 6, 2010. - W. Walters, A Haghighat, M. Wenner, Y. Ham, S. Sitaraman, "A Methodology for Determination of Detector Response for Inspection of a Spent Fuel Pool",
*Proc. PHYSOR 2010 Int. Conf. on Advances in Reactor Physics*, Pittsburgh, PA, May 9-14 2010 - K. Royston, A. Haghighat, C. Yi, "Verification of a Hybrid Adjoint Methodology in TITAN for Single Photon Emission Computed Tomography,"
*Proc. PHYSOR 2010*, Pittsburgh, PA, May 9-14, 2010. - W. Walters, A. Haghighat, M. Wenner, Y. Ham, S. Sitaraman, "Calculation of Sub-critical Multiplication Using a Simplified Fission Matrix Method",
*Trans. ANS Winter Meeting*, Washington, DC, November 15-19 2009 - W. Walters, A. Haghighat, M. Wenner, Y. Ham, S. Sitaraman, "Methodology and Determination of Field of View of Neutron and Gamma Detectors in the Atucha Spent Fuel Storage Pool",
*Proc. INMM 50th Annual Meeting*, Tucson, AZ, July 12-16, 2009 - K. Keller, C. Yi, A. Haghighat, "Analysis of SPECT Imaging Simulation Using the TITAN Transport Code,"
*Proc. M&C 2009*, Saratoga Springs, NY, May 3-7, 2009.