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).

Overview

Modules and Function

RXSP vs. NYOY

Feature

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

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

• Covariance 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