TRIPOLI-4 ® version 9 Shielding for the Shielding Community: Overview, Relevant Benchmarking for Shielding and Licensing Policy

摘要

This is a review paper of the Shielding only version of TRIPOLI-4. TRIPOLI® represents a family of radiation transport codes using the Monte Carlo method (1,2). It has been continuously developed at CEA since the mid 60s. TRIPOLI-4®, being the fourth generation, has been developed starting from the mid 90s in C++. It tracks neutrons from 20 MeV down to 10~(-5)eV, photons, electrons and positrons from 100 MeV to 1 keV, in 3D arbitrary geometries either in TRIPOLI® proprietary format or ROOT(4) format. It reads its continuous energy nuclear data from any evaluation in ENDF format, including but not limited to JEFF-3.1.1 and ENDF/B-Ⅶ.0. It has various simulation modes, fixed-source (with or without fission), criticality, or both of them chained. A variety of tallies are available : averaged flux in a volume (track length and collision estimators), surface flux and current, point flux, reaction rates, deposited energy, dpa, pka, gamma spectroscopy, mesh tallies, tallies for criticality (keff, beta eff, kinetic parameters). It provides the user with embedded response functions from IRDF and EAF as well. Several variance reduction techniques (3), including automated ones, make it particularly suitable to deep penetration problems (implicit capture, Russian roulette, exponential biasing with automatic estimation of the importance map). It may run in parallel, on single multi-core machines as well as heterogeneous networks of stations or massively parallel machines. It comes with productivity tools designed to speed-up the elaboration and verification of the input deck as well as the output analysis: 2D interactive display of geometry ; 2D display of mesh tallies and collision sites ; 3D input deck modeler; compatibility with ROOT tools to post-process TRIPOLI® outputs.