University of Wisconsin Neutronics Center of Excellence

Neutronics, Shielding, and Activation Analyses

The three closely coupled activities include:

In the area of radiation shielding, we developed an optimization methodology and a cost-effective shielding concept that have been adopted internationally by numerous European and Japanese fusion designs. Our recent activation analysis placed UW as the leading U.S. institute for radwaste management assessments. These activities drew the attention of our colleagues in Europe and Japan, requesting collaboration with UW in this unique area of research.

Recognizing the importance of the accurate estimation of the tritium breeding ratio (TBR), we developed in the late 1980s a simple scheme to estimate the overall TBR based on 1-D analysis. We defined a new term called the neutron coverage fraction (NCF), representing the blanket area fraction weighted by the neutron wall loading distribution. In other words, it is the fraction of neutrons incident on any FW segment. The overall TBR can then be estimated by combining the NCF with the 1-D local TBR value. We applied this methodology to many designs and confirmed our estimate with 3-D analysis. Comparing the results showed excellent agreement between the simple 1-D, quick method and the time-consuming 3-D analysis.

Flowchart of modeling process

Publications

Results: 1 to 40 of 202 order by: Num Author Title Date Size Length
1   2  3  4  5  6 

retrieve PDF Acceleration Techniques for the Direct Use of CAD-Based Geometry in Fusion Neutronics Analysis; P.P.H. Wilson, T.J. Tautges, J.A. Kraftcheck, B.M. Smith, D.L. Henderson, October 2009 [presented at the 9th International Symposium on Fusion Nuclear Technology (ISFNT-9), 11-16 October 2009, Dalian, China]. (29 pages, 1.4 MB)

retrieve PDF Direct Coupling of 3-D Neutronics with CAD Models Applied to Fusion Systems; M.E. Sawan, P.P.H. Wilson, T. Tautges, L. El-Guebaly, D. Henderson, T. Bohm, B. Kiedrowski, A. Ibrahim, B. Smith, R. Slaybaugh, September 2009 [presented at the 18th Topical Meeting on the Technology of Fusion Energy (TOFE-2008), 28 September-2 October 2008, San Francisco CA]. (36 pages, 3.0 MB)

retrieve PDF Radiation Shielding Requirements for Magnets in Fusion Reactors; Mohamed Sawan, September 2009 [presented at the 4th Japanese-Mediterranean Workshop on Applied Electromagnetic Engineering for Magnetic, Superconducting and Nano Materials (JAPMED'4), 17-20 September 2005, Cairo, Egypt]. (15 pages, 1.5 MB)

UWFDM-1368   Assessment of Using the Surface Source Approach in 3-D Neutronics of Fusion Systems; T.D. Bohm, B. Smith, M.E. Sawan, P.P.H. Wilson, August 2009]. (22 pages, 3.8 MB)

retrieve PDF Scoping Neutronics Analysis in Support of FDF Design Evolution; Mohamed Sawan, August 2009 [presented at the Fusion Nuclear Science and Technology (FNST) meeting, 18-20 August 2009, UCLA, Los Angeles CA]. (17 pages, 265 kB)

retrieve PDF ARIES-DB Design Issues and Activation of Divertor W Alloys; L. El-Guebaly, A. Robinson, D. Henderson, August 2009 [presented at the ARIES-Pathways Project Meeting, 26-27 August 2009, Georgia Tech, Atlanta GA]. (23 pages, 838 kB)

UWFDM-1372   Need for Online Adjustment of Tritium Bred in Blanket and Implications for ARIES Power Plants; L.A. El-Guebaly, S. Malang, and the ARIES Team, July 2009 [Proceedings of 3rd IAEA Technical Meeting on First Generation of Fusion Power Plants: Design and Technology, July 13-15, 2009, Vienna, Austria. To be published by IAEA.]. (9 pages, 261 kB)

retrieve PDF Need for Online Adjustment of Tritium Bred in Blanket and Implications for ARIES Power Plants; L.A. El-Guebaly and S. Malang, July 2009 [presented at the 3rd IAEA Technical Meeting on First Generation of Fusion Power Plants - Design and Technology, 13-15 July 2009, Vienna, Austria]. (22 pages, 1.2 MB)

UWFDM-1364   3-D Assessment of Neutron Streaming through Inboard Assembly Gaps of ARIES Tokamak Power Plant; T.D. Bohm, L.A. El-Guebaly and the ARIES Team, June 2009]. (16 pages, 2.6 MB)

UWFDM-1363   Application of CAD-Neutronics Coupling to Geometrically Complex Fusion Systems; M.E. Sawan, P.P.H. Wilson, T. Tautges, L.A. El-Guebaly, D.L. Henderson, T.D. Bohm, E.P. Marriott, B. Kiedrowski, B. Smith, A. Ibrahim, R. Slaybaugh, May 2009 [prepared for the 23rd Symposium on Fusion Engineering (SOFE), May 31-June 5, 2009, San Diego CA]. (8 pages, 2.8 MB)

UWFDM-1360   Neutronics Performance Parameters for the US Dual Coolant Lead Lithium ITER Test Blanket Module; M.E. Sawan, E.P. Marriott, M. Dagher, May 2009 [prepared for the 23rd Symposium on Fusion Engineering (SOFE), May 31-June 5, 2009, San Diego CA]. (6 pages, 1.7 MB)

retrieve PDF Neutronics Performance Parameters for the US Dual Coolant Lead Lithium ITER Test Blanket Module; M.E. Sawan, E.P. Marriott, M. Dagher, May 2009 [presented at the 23rd Symposium on Fusion Engineering (SOFE), May 31-June 5, 2009, San Diego CA]. (1 page, 2.7 MB)

retrieve PDF Application of CAD Neutronics Coupling to Geometrically Complex Fusion Systems; M.E. Sawan, P. Wilson, T. Tautges, L. El-Guebaly, D. Henderson, T. Bohm, E. Marriott, B. Kiedrowski, B. Smith, A. Ibrahim, R. Slaybaugh, May 2009 [presented at the 23rd Symposium on Fusion Engineering (SOFE-2009), 31 May-5 June 2009, San Diego CA]. (38 pages, 3.0 MB)

UWFDM-1343   Analysis of Mesh-Based Neutron Source Models for Better Coupling of Plasma Physics and Neutronics; R.N. Slaybaugh, P.P.H. Wilson, L.A. El-Guebaly, E.P. Marriott, January 2009 [ published in Fusion Engineering and Design 84, Issues 7-11 (June 2009) 1774-1778]. (17 pages, 860 kB)

retrieve PDF HAPL Concrete Shielding Requirements; M.E. Sawan, October 2008 [presented at the 19th High Average Power Laser Program Workshop, 22-23 October 2008, University of Wisconsin, Madison WI]. (12 pages, 2.9 MB)

retrieve PDF Neutronics Parameters for Preferred Chamber Configuration with Magnetic Intervention; Mohamed Sawan, Edward Marriott, Carol Aplin, Rene Raffray, October 2008 [presented at the 19th High Average Power Laser Program Workshop, 22-23 October 2008, University of Wisconsin, Madison WI]. (12 pages, 466 kB)

UWFDM-1347   Nuclear Assessment of Shielding Configuration Options for Final Optics of HAPL Laser Fusion Power Plant; M. Sawan, A. Ibrahim, T. Bohm, P. Wilson, September 2008 [presented at the 18th ANS Topical Meeting on Fusion Energy, 28 September-2 October 2008, San Francisco CA].

retrieve PDF Nuclear Assessment of Shielding Configuration Options for Final Optics of HAPL Laser Fusion Power Plant; M. Sawan, A. Ibrahim, T. Bohm, P. Wilson, September 2008 [presented at the 18th ANS Topical Meeting on Fusion Energy, 28 September-2 October 2008, San Francisco CA]. (1 page, 1.4 MB)

retrieve PDF Toward the Ultimate Goal of Tritium Self-Sufficiency: Technical Issues and Requirements Imposed on Fusion Power; L. El-Guebaly and S. Malang, September 2008 [presented at the 18th ANS Topical Meeting on Fusion Energy, 28 September-2 October 2008, San Francisco CA]. (18 pages, 981 kB)

retrieve PDF Three Dimensional Analysis of Radiation Streaming Through ARIES-CS He-Access Pipes; A. Ibrahim, D.L. Henderson, L.A. El-Guebaly, P.P.H. Wilson, and M.E. Sawan, September 2008 [presented at the 18th ANS Topical Meeting on Fusion Energy, 28 September-2 October 2008, San Francisco CA]. (23 pages, 3.0 MB)

retrieve PDF Neutronics as Part of an Integrated Modeling Approach--A CAD-Based Domain Representation; Paul P.H. Wilson, August 2008 [presented at the Fusion Nuclear Science and Technology (FNST) meeting, 12-14 August 2008, UCLA, Los Angeles CA]. (22 pages, 3.5 MB)

retrieve PDF Updated DCLL TBM Neutronics Analysis; Mohamed Sawan, August 2008 [presented at the Fusion Nuclear Science and Technology (FNST) meeting, 12-14 August 2008, UCLA, Los Angeles CA]. (32 pages, 5.7 MB)

UWFDM-1338   Contributon Theory for Shielding Analysis; Marat Seydaliev and D.L. Henderson, July 2008]. (29 pages, 1.2 MB)

UWFDM-1330   Toward the Ultimate Goal of Tritium Self-Sufficiency: Technical Issues and Requirements Imposed on ARIES Fusion Power Plants; L.A. El-Guebaly and S. Malang, April 2008 (revised August 2008)  [submitted to Fusion Engineering and Design]. (32 pages, 2.0 MB)

UWFDM-1332   Time-Dependent Integral Neutron Transport for Inertial Confinement Fusion; C.S. Aplin and D.L. Henderson, August 2007]. (59 pages, 1.6 MB)

UWFDM-1302   Analysis of Engineering Issues Facing the In-Zinerator Z-Pinch Fusion Device Using MCNP; R. Grady, P. Phruksarojanakun, P.P.H. Wilson, L.A. El-Guebaly, B. Cipiti, August 2007]. (20 pages, 1.1 MB)

UWFDM-1328   Three Dimensional Neutronics Analysis of the ITER First Wall/Shield Module 13; B. Smith, P.P.H. Wilson, M.E. Sawan, June 2007 [presented at the 22nd IEEE/NPSS Symposium on Fusion Engineering, 17-21 June 2007, Albuquerque NM]. (7 pages, 2.9 MB)

UWFDM-1327   Neutronics Analysis of a Molten Salt Blanket for the HAPL Laser Fusion Power Plant with Magnetic Intervention; M.E. Sawan, C.S. Aplin, G. Sviatoslavsky, A.R. Raffray, June 2007 [presented at the 22nd IEEE/NPSS Symposium on Fusion Engineering, 17-21 June 2007, Albuquerque NM]. (8 pages, 726 kB)

UWFDM-1326   Neutronics Assessment of the ITER First Wall/Shield Modules; M.E. Sawan, B. Smith, P. Wilson, June 2007 [presented at the 22nd IEEE/NPSS Symposium on Fusion Engineering, 17-21 June 2007, Albuquerque NM]. (9 pages, 3.2 MB)

retrieve PDF 3-D Neutronics Analysis of the ITER First Wall/Shield Module 13; B. Smith, P.P.H. Wilson, M.E. Sawan, June 2007 [presented at the 22nd IEEE/NPSS Symposium on Fusion Engineering, 17-21 June 2007, Albuquerque NM]. (1 page, 5.8 MB)

retrieve PDF Neutronics Assessment of the ITER First Wall/Shield Modules; M. Sawan, B. Smith, P. Wilson, June 2007 [presented at the 22nd IEEE/NPSS Symposium on Fusion Engineering (SOFE07), 17-21 June 2007, Albuquerque NM]. (27 pages, 3.7 MB)

retrieve PDF Innovative 3-D Neutronics Analyses Directly Coupled with CAD Models of Geometrically Complex Fusion Systems; M. Sawan, P. Wilson, T. Tautges, L. El-Guebaly, D. Henderson, T. Bohm, G. Sviatoslavsky, B. Kiedrowski, A. Ibrahim, B. Smith, R. Slaybaugh, June 2007 [presented at the 13th International Conference on Emerging Nuclear Energy Systems, ICENES2007, 3-8 June 2007, Istanbul, Turkey]. (24 pages, 5.7 MB)

retrieve PDF Innovations in 3-D Neutronics Analysis for Fusion Energy Systems; P.P.H. Wilson, March 2007 [presented at the U.W. Plasma Seminar]. (31 pages, 1.5 MB)

retrieve PDF Shielding Requirements for Flibe/SiC Blanket with Magnetic Intervention; M.E. Sawan, January 2007 [presented at the HAPL Magnetic Intervention Chamber Core Meeting, 30-31 January 2007, University of California San Diego, La Jolla, CA]. (11 pages, 875 kB)

UWFDM-1297   Initial Engineering Assessment of Actinide Transmutation in Z-Pinch Power Plant; L. El-Guebaly, B. Cipiti, P.H. Wilson, P. Phruksarojanakun, R. Grady, I. Sviatoslavsky, December 2006 (revised June 2007)]. (22 pages, 851 kB)

retrieve PDF Status of the ITER Project and Neutronics Activities; Mohamed Sawan, November 2006 [presented at the Cross Section Evaluation Working Group (CSEWG) Meeting, 6-7 November 2006, Brookhaven National Laboratory, Long Island NY]. (23 pages, 6.5 MB)

UWFDM-1311   Neutronics Analysis of a Self-Cooled Blanket for a Laser Fusion Plant with Magnetic Diversion; M.E. Sawan, C.S. Aplin, G. Sviatoslavsky, I.N. Sviatoslavsky, A.R. Raffray, November 2006 [presented at the 17th ANS Topical Meeting on Fusion Energy, 13-15 November 2006, Albuquerque NM; published in Fusion Science and Technology, 52/4 (November 2007) 771-775]. (8 pages, 642 kB)

UWFDM-1308   Activation and Waste Stream Analysis for RTL of Z-Pinch Power Plant; L. El-Guebaly, P. Wilson, M. Sawan, November 2006 [presented at the 17th ANS Topical Meeting on Fusion Energy, 13-15 November 2006, Albuquerque NM]. (7 pages, 945 kB)

retrieve PDF Three-Dimensional Neutronics Analysis of ARIES-CS Using CAD-Based Tools; P. Wilson, B. Kiedrowski, L. El-Guebaly, G. Sviatoslavsky, J. Lyon, X. Wang, R. Slaybaugh, A. Ibrahim, and the ARIES Team, November 2006 [presented at the 17th ANS Topical Meeting on Fusion Energy, 13-15 November 2006, Albuquerque NM]. (21 pages, 609 kB)

retrieve PDF Innovations in 3-Dimensional Neutronics Analysis for Fusion Systems; P. Wilson, T. Tautges, M. Sawan, L. El-Guebaly, D. Henderson, G. Sviatoslavsky, B. Kiedrowski, A. Ibrahim, B. Smith, R. Slaybaugh, November 2006 [presented at the 17th ANS Topical Meeting on Fusion Energy, 13-15 November 2006, Albuquerque NM]. (27 pages, 4.2 MB)

Results: 1 to 40 of 202 order by: Num Author Title Date Size Length
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