RESUMO
The MARS code is under continuous development and has recently undergone substantial improvements that further increase its reliability and predictive power in numerous shielding, accelerator, detector and space applications. The major developments and new features of the MARS15 (2004) version described in this paper concern an extended list of elementary particles and arbitrary heavy ions and their interaction cross sections, inclusive and exclusive nuclear event generators, module for modelling particle electromagnetic interactions, enhanced geometry and histogramming options, improved MAD-MARS Beam Line Builder, enhanced graphical user interface and an MPI-based parallelisation of the code.
Assuntos
Modelos Estatísticos , Método de Monte Carlo , Proteção Radiológica/métodos , Radiometria/métodos , Design de Software , Validação de Programas de Computador , Software , Algoritmos , Simulação por Computador , Desenho Assistido por Computador , Doses de Radiação , Proteção Radiológica/instrumentação , Espalhamento de Radiação , Interface Usuário-ComputadorRESUMO
In order to meet the challenges of new accelerator and space projects and further improve modelling of radiation effects in microscopic objects, heavy-ion interaction and transport physics have been recently incorporated into the MARS15 Monte Carlo code. A brief description of new modules is given in comparison with experimental data.
Assuntos
Íons Pesados , Modelos Estatísticos , Método de Monte Carlo , Proteção Radiológica/métodos , Radiometria/métodos , Validação de Programas de Computador , Software , Algoritmos , Simulação por Computador , Desenho Assistido por Computador , Doses de Radiação , Proteção Radiológica/instrumentação , Espalhamento de Radiação , Design de Software , Interface Usuário-ComputadorRESUMO
The CEM2k and LAQGSM codes have been recently developed at Los Alamos National Laboratory to simulate nuclear reactions for a number of applications. We have benchmarked our codes against most available data measured at incident particle energies from 10 MeV to 800 GeV and have compared our results with predictions of other current models used by the nuclear community. Here, we present a brief description of our codes and show some illustrative results that testify that CEM2k and LAQGSM can be used as reliable event generators for space-radiation-shielding, cosmic-ray (CR) propagation, and other astrophysical applications. Finally, we show an example of combining of our calculated cross-sections with experimental data from our LANL T-16 compilation to produce evaluated files. Such evaluated files were successfully used in the model of particle propagation in the Galaxy GALPROP to better constrain the size of the CR halo.
