H. RXSP

Download  Intro_RXSP

Introduction

The accuracy of the nuclear cross section data is a prerequisite for the accuracy of reactor neutron transport calculations, i.e. MC method. RXSP is a nuclear Cross Section Processing code  being originally developed by REAL group, Department of Engineering Physics, Tsinghua University, which is mainly intended to reactor analysis.  The current version is RXSP-Beta 2.0 released in August,2013 domestically in China Mainland. The Beta3.0 version is being developed jointly by UNIST and Tsinghua University(per the agreement of Prof. Lee and Prof. WANG).

Modules and Functions
Functional Modules

Functional Modules


RXSP vs. NYOY

Features
  • a. Support all resonance parameters
  • b. Fast Doppler broadening
  • c. Fast P-Table Generation
  • d. P-Table Interpolation 
  • e. S(a,b) Interpolation
  • f. OpenMP parallel 
Validation

Cross Sections Library Processing


Validation of Criticality Benchmark Suites

Total view of differences of k-effective of 132 benchmarks


Neutron Spectrum of four cases:

                                                                                                                                                     Case 1: heu-met-fast-001-case-a

                                                                                                                                                     Case 2: ieu-met-fast-002

                                                                                                                                                     Case 3 : leu-sol-therm-007-case-14

                                                                                                                                                     Case 4 : pu-met-fast-001 



Simulation time
Extension
  • Coveriance data processing
    • Multi-group covariance 
    • Continuous-energy covariance
    • Implicit uncertainty from resonance parameters
  • Automation sequence for random sampling UQ
    • Random sampling/ Latin Hypercube Sampling
    • Automatic generation of perturbed cross section libraries  
Flow chart of uncertainty quantification

Flow chart of covariance data processing



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