Presentation is loading. Please wait.

Presentation is loading. Please wait.

ARIES Pathways Project 05/29/08

Published byEmil Richardson Modified over 6 years ago

Similar presentations

Presentation on theme: "ARIES Pathways Project 05/29/08"— Presentation transcript:

1 ARIES Pathways Project 05/29/08
A Study of the Effects of Source Sampling Methods on ARIES-RS NWL Profiles R.N. Slaybaugh, E.P. Marriott, P.P.H. Wilson, L. El-Guebaly Contributors: C. Kessel (PPPL), X. Wang (UCSD) ARIES Pathways Project 05/29/08

2 Impact of Source Sampling on NWL Profile
Outline Introduction Past NWL Work (in 1996) with approximate neutron source distribution Present Work with exact neutron source distribution Comparison with DAGMC Results Recommendations Publications ARIES Pathways Project 05/29/08 Impact of Source Sampling on NWL Profile

3 Impact of Source Sampling on NWL Profile
Introduction interim final Using 3-D MCNP code, El-Guebaly* determined neutron wall loading (NWL) distribution for interim design Final design was later determined Comparison of interim and final design cross sections Parameter Interim (Jan ‘96) Final (Aug ‘96) Power MW 2167 MW Major Radius 5.12 m 5.52 m Minor Radius 1.28 m 1.38 m Magnetic Shift 55 cm 33 cm Peak NWL (midplane) 5.3 MW/m2 5.6 MW/m2 (from ACS) *El-Guebaly, L.A., The ARIES Team. “Overview of ARIES-RS neutronics and radiation shielding: key issues and main conclusions.” Fusion Engineering and Design 38. (1997) : ARIES Pathways Project 05/29/08 Impact of Source Sampling on NWL Profile

4 Impact of Source Sampling on NWL Profile
Introduction We reexamined the NWL for ARIES-RS Different source sampling methods were used Effect on NWL distribution is analyzed FW segmented vertically (every cm) to improve accuracy ARIES-RS cross section view with structural detail ARIES-RS cross section view with wall segmenting and 3 source regions shown ARIES Pathways Project 05/29/08 Impact of Source Sampling on NWL Profile

5 Past Work Used standard MCNP source definition
3 regions were created in the plasma zone They were weighted to represent the actual source distribution, provided by C. Bathke Each region was sampled uniformly Angular distribution was isotropic NWL results from 1997 report ARIES Pathways Project 05/29/08 Impact of Source Sampling on NWL Profile

6 Impact of Source Sampling on NWL Profile
Present Work For interim ARIES-RS design, NWL was computed using 3 source distributions: one uniformly sampled region (basic) 3 uniformly sampled regions (this is what was done before) Sampling of actual source distribution provided by C. Kessel These results will be compared to assess the accuracy of each method. ARIES Pathways Project 05/29/08 Impact of Source Sampling on NWL Profile

7 Impact of Source Sampling on NWL Profile
Present Work (cont.) Plasma parameters provided by C. Kessel Provided on R-Z grid in standard output format from plasma physics simulation Generate a source density distribution on R-Z grid, S(R,Z) Source probability density function (PDF) derived by volume weighting PDF = 2πR*dR*dZ*S(R,Z) Cumulative distribution function is created by summing over R and Z ARIES Pathways Project 05/29/08 Impact of Source Sampling on NWL Profile

8 Impact of Source Sampling on NWL Profile
Present Work (cont.) Source mesh cell is selected by: Linear search through Z from distribution function Linear search through R from distribution function Toroidal angle is sampled randomly from a uniform distribution The source mesh cell is then sampled uniformly in volume; the size is obtained from the R-Z grid The source is emitted isotropically ARIES Pathways Project 05/29/08 Impact of Source Sampling on NWL Profile

9 Comparison of Inboard NWL results by source, native geometry
ARIES Pathways Project 05/29/08 Impact of Source Sampling on NWL Profile

10 Comparison of Outboard NWL results by source, native geometry
ARIES Pathways Project 05/29/08 Impact of Source Sampling on NWL Profile

11 Comparison of Divertor NWL results by source, native geometry
ARIES Pathways Project 05/29/08 Impact of Source Sampling on NWL Profile

12 Comparison to DAGMCNPX
Calculations repeated with DAGMCNPX Previous results used “native” MCNP geometry DAGMCNPX was developed at UW and performs transport directly on the CAD geometry file The results from the native and DAGMCNPX geometries will be compared ARIES Pathways Project 05/29/08 Impact of Source Sampling on NWL Profile

13 Impact of Source Sampling on NWL Profile
Results Comparison of DAGMC and native geometry for Inboard NWL , actual source ARIES Pathways Project 05/29/08 Impact of Source Sampling on NWL Profile

14 Impact of Source Sampling on NWL Profile
Results Comparison of DAGMC and native geometry for Outboard NWL , actual source ARIES Pathways Project 05/29/08 Impact of Source Sampling on NWL Profile

15 Impact of Source Sampling on NWL Profile
Results Comparison of DAGMC and native geometry for Divertor NWL , actual source ARIES Pathways Project 05/29/08 Impact of Source Sampling on NWL Profile

16 Native Geometry (actual source)
Results one uniform region 3 uniform regions actual distribution Peak Inboard Γ 3.2 MW/m2 3.8 MW/m2 4.1 MW/m2 Peak Outboard Γ 4.8 MW/m2 5.3 MW/m2 Average* Γ 3.1 MW/m2 Native Geometry (actual source) DAGMC (actual soruce) Peak Inboard Γ 4.1 MW/m2 Peak Outboard Γ 5.3 MW/m2 Average* Γ 3.1 MW/m2 ARIES Pathways Project 05/29/08 * Average Γ = Neutron Power / FW area including divertor Impact of Source Sampling on NWL Profile

17 Impact of Source Sampling on NWL Profile
Results Source Comparison: Outboard and divertor cases: the 3 region source matched the actual quite well Inboard case, the 3 region source was ~8% lower at the midplane shallower curvature, and >10% higher near the top/bottom DAGMC comparison: For the actual source, all results within 4% For 3/45 cases with >1% discrepancy had a statistical error of the same magnitude Ssimilar results for both other source types ARIES Pathways Project 05/29/08 Impact of Source Sampling on NWL Profile

18 Impact of Source Sampling on NWL Profile
Recommendations The 3 region source captures many of the effects of the real source However, due to the slight disagreement for the inboard results (+/- 10%), the actual source should be used DAGMC is also an appropriate choice for these kinds of calculations Sensitivity to actual source resolution should be studied ARIES Pathways Project 05/29/08 Impact of Source Sampling on NWL Profile

19 Impact of Source Sampling on NWL Profile
Publications UW-FDM Report: A Study of Effects of Source Sampling Methods on ARIES-RS NWL Profile. R. N. Slaybaugh, E. P. Marriot, P. P. H. Wilson, L. El-Guebaly SOFT 2008: R.N. Slaybaugh, P.P.H. Wilson, L. El-Guebaly, E.P. Marriott “A Monte Carlo Sampling Method for an Arbitrary Toroidal Source” ARIES Pathways Project 05/29/08 Impact of Source Sampling on NWL Profile

Download ppt "ARIES Pathways Project 05/29/08"

Similar presentations

Stefan Roesler SC-RP/CERN on behalf of the CERN-SLAC RP Collaboration

Stefan Roesler SC-RP/CERN on behalf of the CERN-SLAC RP Collaboration
First Wall Heat Loads Mike Ulrickson November 15, 2014.

First Wall Heat Loads Mike Ulrickson November 15, 2014.
Neutronics Analysis on a Compact Tokamak Fusion Reactor CREST Q. HUANG 1,2, S. ZHENG 2, L. Lu 2, R. HIWATARI 3, Y. ASAOKA 3, K. OKANO 3, Y. OGAWA 1 1 High.

Neutronics Analysis on a Compact Tokamak Fusion Reactor CREST Q. HUANG 1,2, S. ZHENG 2, L. Lu 2, R. HIWATARI 3, Y. ASAOKA 3, K. OKANO 3, Y. OGAWA 1 1 High.
First Wall Thermal Hydraulics Analysis El-Sayed Mogahed Fusion Technology Institute The University of Wisconsin With input from S. Malang, M. Sawan, I.

First Wall Thermal Hydraulics Analysis El-Sayed Mogahed Fusion Technology Institute The University of Wisconsin With input from S. Malang, M. Sawan, I.
Neutron Wall Loading Profile Using CAD/MCNP Interface and (progress report) Mengkuo Wang ARIES Meeting June 16-17, 2004 University of Wisconsin - Madison.

Neutron Wall Loading Profile Using CAD/MCNP Interface and (progress report) Mengkuo Wang ARIES Meeting June 16-17, 2004 University of Wisconsin - Madison.
Neutron Wall Loading Profile Using CAD/MCNP Interface Mengkuo Wang ARIES Meeting Sep 16, 2004 University of Wisconsin - Madison.

Neutron Wall Loading Profile Using CAD/MCNP Interface Mengkuo Wang ARIES Meeting Sep 16, 2004 University of Wisconsin - Madison.
Magnet System Definition L. Bromberg P. Titus MIT Plasma Science and Fusion Center ARIES meeting November 4-5, 2004.

Magnet System Definition L. Bromberg P. Titus MIT Plasma Science and Fusion Center ARIES meeting November 4-5, 2004.
Poloidal Distribution of ARIES-ACT Neutron Wall Loading L. El-Guebaly, A. Jaber, D. Henderson Fusion Technology Institute University of Wisconsin-Madison.

Poloidal Distribution of ARIES-ACT Neutron Wall Loading L. El-Guebaly, A. Jaber, D. Henderson Fusion Technology Institute University of Wisconsin-Madison.
Proposals for Next Year’s MFE Activities C. Kessel, PPPL ARIES Project Meeting, Sept. 24, 2000.

Proposals for Next Year’s MFE Activities C. Kessel, PPPL ARIES Project Meeting, Sept. 24, 2000.
Development of the New ARIES Tokamak Systems Code Zoran Dragojlovic, Rene Raffray, Farrokh Najmabadi, Charles Kessel, Lester Waganer US-Japan Workshop.

Development of the New ARIES Tokamak Systems Code Zoran Dragojlovic, Rene Raffray, Farrokh Najmabadi, Charles Kessel, Lester Waganer US-Japan Workshop.
Progress on Engineering and Costing Algorithms for ARIES Systems Code Zoran Dragojlovic, Rene Raffray, Chuck Kessel and Leslie Bromberg ARIES Project Meeting.

Progress on Engineering and Costing Algorithms for ARIES Systems Code Zoran Dragojlovic, Rene Raffray, Chuck Kessel and Leslie Bromberg ARIES Project Meeting.
AN UPDATE on DIVERTOR DESIGN and HEAT LOAD ANALYSIS T.K. Mau (UCSD) H. McGuinness (RPI), D. Steiner (RPI) A.R. Raffray (UCSD), X. Wang (UCSD), A. Grossman.

AN UPDATE on DIVERTOR DESIGN and HEAT LOAD ANALYSIS T.K. Mau (UCSD) H. McGuinness (RPI), D. Steiner (RPI) A.R. Raffray (UCSD), X. Wang (UCSD), A. Grossman.
MCNP/CAD Activities and Preliminary 3-D Results Mengkuo Wang, T. Tautges, D. Henderson, and L. El-Guebaly Fusion Technology Institute University of Wisconsin.

MCNP/CAD Activities and Preliminary 3-D Results Mengkuo Wang, T. Tautges, D. Henderson, and L. El-Guebaly Fusion Technology Institute University of Wisconsin.
Status of 3-D Analysis, Neutron Streaming through Penetrations, and LOCA/LOFA Analysis L. El-Guebaly, M. Sawan, P. Wilson, D. Henderson, A. Ibrahim, G.

Status of 3-D Analysis, Neutron Streaming through Penetrations, and LOCA/LOFA Analysis L. El-Guebaly, M. Sawan, P. Wilson, D. Henderson, A. Ibrahim, G.
10/04/2006 3-D Source, Neutron Wall Loading & Radiative Heating for ARIES-CS Paul Wilson Brian Kiedrowski Laila El-Guebaly.

10/04/ D Source, Neutron Wall Loading & Radiative Heating for ARIES-CS Paul Wilson Brian Kiedrowski Laila El-Guebaly.
June19-21, 2000Finalizing the ARIES-AT Blanket and Divertor Designs, ARIES Project Meeting/ARR ARIES-AT Blanket and Divertor Design (The Final Stretch)

June19-21, 2000Finalizing the ARIES-AT Blanket and Divertor Designs, ARIES Project Meeting/ARR ARIES-AT Blanket and Divertor Design (The Final Stretch)
Tissue inhomogeneities in Monte Carlo treatment planning for proton therapy L. Beaulieu 1, M. Bazalova 2,3, C. Furstoss 4, F. Verhaegen 2,5 (1) Centre.

Tissue inhomogeneities in Monte Carlo treatment planning for proton therapy L. Beaulieu 1, M. Bazalova 2,3, C. Furstoss 4, F. Verhaegen 2,5 (1) Centre.
APPLICATION: The first real application of the CAD-MCNP coupling approach is to calculate the neutron wall loading distribution (Γ) in the Z and toroidal.

APPLICATION: The first real application of the CAD-MCNP coupling approach is to calculate the neutron wall loading distribution (Γ) in the Z and toroidal.
March 20-21, 2000ARIES-AT Blanket and Divertor Design, ARIES Project Meeting/ARR Status ARIES-AT Blanket and Divertor Design The ARIES Team Presented.

March 20-21, 2000ARIES-AT Blanket and Divertor Design, ARIES Project Meeting/ARR Status ARIES-AT Blanket and Divertor Design The ARIES Team Presented.
Minimum Radial Standoff: Problem definition and Needed Info L. El-Guebaly Fusion Technology Institute University of Wisconsin - Madison With Input from:

Minimum Radial Standoff: Problem definition and Needed Info L. El-Guebaly Fusion Technology Institute University of Wisconsin - Madison With Input from:

Similar presentations

Ads by Google