Photo of William Walters

William Walters

Assistant Professor

Affiliation(s):

  • Nuclear Engineering

232 Hallowell Building

wjw24@psu.edu

814-867-4329

Research Areas:

Nuclear Power; Nuclear Science

 
 

 

Education

  • BASc, Engineering Physics (Mechanical Option), University of British Columbia, 2007
  • MS, Nuclear Engineering Science, University of Florida, 2009
  • Ph D, Nuclear Engineering, Virginia Tech, 2015

Publications

Journal Articles

  • Tyler Topham, Adam Rau and William Walters, 2019, "An Iterative Fission Matrix Scheme for Calculating Steady-State Power and Critical Control Rod Position in a TRIGA Reactor", Annals of Nuclear Energy
  • Donghao He and William Walters, 2019, "A Local Fission Matrix Correction Method for Heterogeneous Whole Core Transport with RAPID", Annals of Nuclear Energy, 134, pp. 263-272
  • William Walters, Nathan Roskoff and Alireza Haghighat, 2018, "The RAPID Fission Matrix Approach to Reactor Core Criticality Calculations", Nuclear Science and Engineering, 192, (1)
  • Kieran M Tierney, Johanna J Heymans, Graham P Muir, Gordon T Cook, Joe Buszowski, Jeroen Steenbeek, William Walters, Villy Christensen, Gillian MacKinnon, John A Howe and Sheng Xu, 2018, "Modelling Marine Trophic Transfer of Radiocarbon (14C) from a Nuclear Facility", Environmental Modelling and Software, 102, pp. 138-154
  • William Walters and Villy Christensen, 2018, "Ecotracer: analyzing concentration of contaminants and radioisotopes in an aquatic spatial-dynamic food web model", Journal of Environmental Radioactivity, 181, pp. 118 - 127
  • William Walters and Alireza Haghighat, 2017, "The adaptive collision source method for discrete ordinates radiation transport", Annals of Nuclear Energy, 105, pp. 45-58
  • William Walters and Alireza Haghighat, 2016, "ACS algorithm in discrete ordinates for pressure vessel dosimetry", European Physical Journal Web of Conferences, 106, pp. 03006
  • Nathan Roskoff, William Walters and Alireza Haghighat, 2016, "Application of the Subgroup Decomposition Method (SDM) for Reactor Simulation", EPJ Web of Conferences, 106, pp. 03008
  • A. Haghighat, K. Royston and William Walters, 2016, "MRT methodologies for real-time simulation of nonproliferation and safeguards problems", Annals of Nuclear Energy, 87, pp. 61-67
  • William Walters, A. Haghighat, K. Royston, C. Yi and G. Sjoden, 2014, "A response function methodology to calculate induced fission neutron flux distribution in an active interrogation system", Progress in Nuclear Science and Technology, 4, pp. 533-537
  • Katherine Royston, Alireza Haghighat, William Walters, Ce Yi and Glenn Sjoden, 2014, "Determination of current at a detector window using a hybrid adjoint function methodology", Progress in Nuclear Science and Technology, 4, pp. 528-532
  • William Walters, A. Haghighat, Y. Ham and S. Sitaraman, 2012, "Development of INSPCT-S for inspection of spent fuel pool", Journal of ASTM International, 9, (4), pp. 1-11
  • Carl Walters, Villy Christensen, William Walters and Kenneth Rose, 2010, "Representation of multistanza life histories in Ecospace models for spatial organization of ecosystem trophic interaction patterns", Bulletin of Marine Science, 86, (2), pp. 439–459

Conference Proceedings

  • Benjamin K Harris and William Walters, 2019, "Evaluation of Updated Monte Carlo Models for the Penn State Breazeale Reactor", Transactions of the American Nuclear Society, Washington, DC, Nov. 17-21, 2019.
  • Donghao He and William Walters, 2019, "Investigation of fission matrix homogenization and iterative convergence in RAPID", Transactions of the American Nuclear Society, Washington, DC, Nov. 17-21, 2019
  • Adam Rau and William Walters, 2019, "Fission Matrix Methods for Nuclear Thermal Propulsion Applications", International Conference on Mathematics and Computational Methods applied to Nuclear Science and Engineering (M&C 2019), Portland, OR, Aug. 25-29, 2019
  • Kyle Reed and William Walters, 2019, "Effect of Control Rod Burnup on Control Rod Worth and Fuel Depletion in the Penn State Breazeale Reactor", American Nuclear Society Student Conference 2019, Richmond, VA, April 4-6, 2019
  • Jake Eichenlaub and William Walters, 2019, "A Fission Matrix Approach to Xenon Prediction", American Nuclear Society Student Conference 2019, Richmond, VA, April 4-6, 2019
  • William Walters, 2018, "A Method for Adaptive Stratified Sampling with Angular Source Biasing", Transactions of the American Nuclear Society, Orlando, FL, Nov. 11-15, 2018
  • Tyler J Topham and William Walters, 2018, "Temperature Feedback Using the Fission Matrix for a TRIGA Reactor", Transactions of the American Nuclear Society, Orlando, FL, Nov. 11-15, 2018, 119, pp. 1233-1235
  • Adam Rau*, Donghao He* and William Walters, 2018, "Application of Fission Matrix Correction Method to TRIGA Reactor Core", Transactions of the American Nuclear Society, Phildelphia, PA, June 17-21, 118, pp. 1014-1017
  • Donghao He* and William Walters, 2018, "Application of the Ratio Correction Fission Matrix Method to a 2-D Four Assembly Model", Transactions of the American Nuclear Society, Phildelphia, PA, June 17-21, 118, pp. 917-920
  • Donghao He* and William Walters, 2018, "A new fission matrix correction method to estimate the source distribution in nuclear reactor core", PHYSOR 2018: Reactors Physics paving the way towards more efficient systems, Cancun, Mexico, April 22-26, 2018
  • William Walters and Donghao He, 2018, "A Local Fission Matrix Correction Method for Heterogeneous Whole Core Transport with RAPID", PHYTRA4 - The Fourth International Conference on Physics and Technology of Reactors and Applications, Marrakech, Morocco, September 17-19, pp. 1--13
  • Andrew Bascom*, William Walters and Kenan Unlu, 2017, "Analysis of the New Core-Moderator Assembly and Beam Ports at the Penn State Breazeale Reactor", Transactions of the American Nuclear Society, Washington, D.C., October 29–November 2, 2017, 117
  • William Walters, 2017, "Application of the RAPID Fission Matrix Methodology to 3-D Whole-core Reactor Transport", M&C 2017 - International Conference on Mathematics & Computational Methods Applied to Nuclear Science & Engineering, Jeju, Korea, April 16-20, 2017
  • William Walters and Alireza Haghighat, 2016, "Neutronic analysis of the CHANDLER anti-neutrino detector", Proceedings of the Advances in Nuclear Nonproliferation Technology & Policy Conference (ANTPC), Santa Fe, NM, Sep. 25 - 30, 2016
  • William Walters, Alireza Haghighat, R Bruce Vogelaar and Katherine E Royston, 2016, "Analysis and Burnup Modeling of the GEM*STAR Accelerator-Driven System", Proceedings of the PHYSOR 2016 Conference, Sun Valley, ID, May 1-5, 2016
  • William Walters, N. Roskoff and A. Haghighat, 2015, "A fission matrix approach to calculate pin-wise 3-D fission density distribution", Joint International Conference on Mathematics and Computation (M&C), Supercomputing in Nuclear Applications (SNA) and the Monte Carlo (MC) Method, Nashville, TN, April 19-23, 2015
  • William Walters and A. Haghighat, 2014, "ACS algorithm in discrete ordinates for pressure vessel dosimetry", Proc. 15th International Symposium on Reactor Dosimetry (ISRD), Aix-en-Provence, France, May 18-23, 2015
  • N. Roskoff, William Walters and A. Haghighat, 2014, "Application of the subgroup decomposition method (SDM) for reactor simulation", Proc. 15th International Symposium on Reactor Dosimetry (ISRD), Aix-en-Provence, France, May 18-23, 2015
  • A. Haghighat, K. Royston and William Walters, 2014, "Development of methodologies for ex-core detector modeling for SMRs", Proc. ASME 2014 Small Modular Reactors Symposium, Washington, DC, April 15-17, 2014
  • Nathan Roskoff, William Walters, Alireza Haghighat, Ce Yi and Glenn Sjoden, 2014, "Implementation and verification of the SDM in the TITAN 3-DS N transport code", Proceedings of the International Conference on Physics of Reactors (PHYSOR 2014), Kyoto, Japan, September 28-October 3, 2014
  • William Walters, Katherine E. K. Royston and Alireza Haghighat, 2014, "Theory and Performance of AIMS for Active Interrogation", SNA + MC 2013 - Joint International Conference on Supercomputing in Nuclear Applications + Monte Carlo, EDP Sciences, Paris, France, October 27-31, 2013
  • William Walters, Nathan Roskoff, Katherine K Royston and Alireza Haghighat, 2014, "Use of the fission matrix method for solution of the eigenvalue problem in a spent fuel pool", Proceedings of the International Conference on Physics of Reactors (PHYSOR 2014), Kyoto, Japan, September 28-October 3, 2014
  • William Walters and A. Haghighat, 2013, "Performance of the adaptive collision source (ACS) method for discrete ordinates in parallel environments", SNA + MC 2013 - Joint International Conference on Supercomputing in Nuclear Applications + Monte Carlo, Paris, France, October 27-31, 2013
  • K. Royston, William Walters, A. Haghighat, C. Yi and G. Sjoden, 2013, "Development of active interrogation for monitoring special-nuclear-materials (AIMS) hybrid tool", Transactions of the American Nuclear Society, Atlanta, GA, June 16-20, 2013, 108, pp. 866-870
  • K. Royston, William Walters, A. Haghighat, C. Yi and G. Sjoden, 2013, "Development and application of a hybrid transport methodology for active interrogation systems", International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C 2013), Sun Valley, ID, May 5-9, 2013
  • William Walters and A. Haghighat, 2013, "Development of the adaptive collision source (ACS) method for discrete ordinates", International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C 2013), Sun Valley, ID, May 5-9, 2013
  • Alireza Haghighat, Katherine Royston, William Walters, Ce Yi and Glenn E Sjoden, 2013, "Development of AIMS hybrid tool for active interrogation", Institute of Nuclear Materials Management (INMM) 54th Anuual Meeting, Palm Desert, CA, July 14-18
  • Shivakumar Sitaraman, Y Ham, William Walters, Alireza Haghighat and O Peixoto, 2011, "In-Situ verification of Spent Fuel at the Atucha-I Nuclear Power Plant", Proceedings of the Institute of Nuclear Materials Management (INMM) 52th Annual Meeting, Palm Desert, CA, July 17-21, 2011
  • William Walters, A Haghighat, M Wenner, Sitaraman Shivakumar and Ham Young, 2010, "A methodology for determination of detector response for inspection of a spent fuel pool", PHYSOR 2010: International Conference on Advances in Reactor physics to Power the Nuclear Renaissance, Pittsburgh, PA, May 9-14, 2010
  • William Walters, M Wenner, A Haghighat, S Sitaraman and YS Ham, 2009, "Methodology and Determination of Field of View of Neutron and Gamma Detectors in the Atucha Spent Fuel Storage Pool", Institute of Nuclear Materials Management (INMM) 50th Annual Meeting, Tucson, AZ, July 12-16, 2009, pp. 3241-3250
  • William Walters, Alireza Haghighat, Michael Wenner, Shivakumar Sitaraman and Young Ham, 2009, "Calculation of Sub-critical Multiplication Using a Simplified Fission Matrix Method", Transactions of the American Nuclear Society, Washington, DC, November 15-19, 2009, 101, pp. 447–448

Abstracts

  • Adam Rau and William Walters, 2019, "Fission Matrix Neutronics Calculations with Temperature Feedback in a Nuclear Thermal Propulsion Core", Nuclear and Emerging Technologies for Space, American Nuclear Society Topical Meeting

Other

  • William Walters, 2015, "Development of the Adaptive Collision Source Method for Discrete Ordinates Radiation Transport"
  • William Walters, 2009, "Development of a Calculation Methodology to Determine Detector Response in a Spent Fuel Pool"

Research Projects

Honors and Awards

Service

Service to Penn State:

  • Committee Work, Committee Member, Penn State Reactor Safeguards Committee, March 2017 - March 2020

Service to External Organizations:

  • Participation in or Service to Professional and Learned Societies, Committee Member, Executive Committee Member, American Nuclear Society Reactor Physics Division, June 2017 - June 2020
  • Participation in or Service to Professional and Learned Societies, Committee Member, American Nuclear Society Reactor Physics Standards Committee, November 2016
  • Participation in or Service to Professional and Learned Societies, Committee Member, American Nuclear Society Standards Committee, Working Group on "ANS 19.3 Steady State Neutronics Methods for Power Reactor Analysis", November 2016
 


 

About

With more than 60 faculty members, 330 graduate students, and 800 undergraduate students, the Department of Mechanical Engineering is innovating today what will impact tomorrow’s solutions to meeting our energy needs, homeland security, biomedical devices, and transportation systems. We offer B.S. degrees in mechanical engineering as well as resident (M.S., Ph.D.) and online (M.S., M.Eng.) graduate degrees in mechanical engineering. See how we’re inspiring change and impacting tomorrow at me.psu.edu.

The Ken and Mary Alice Lindquist Department of Nuclear Engineering at Penn State is one of the top ranked nuclear engineering programs in the United States. A strong focus on experimental research distinguishes us from many other programs. Our actively growing program has 8 faculty members and almost 90 graduate students. In the Radiation Science and Engineering Center, nuclear engineering students can take advantage of the Breazeale Nuclear Reactor, the longest operating university research reactor in the country. Visit nuce.psu.edu for more information.

Department of Mechanical and Nuclear Engineering

137 Reber Building

The Pennsylvania State University

University Park, PA 16802-4400

Phone: 814-865-2519