Synopses & Reviews
Synopsis
Table of contents:
Contents .......................................................................................................................................... 4
Introduction ..................................................................................................................................... 8
Section 1: Basic Concepts ............................................................................................................... 8
1.1 Geometry ............................................................................................................................... 8
1.1.1 Simplest possible input file............................................................................................. 8
1.1.2 Running MCNP - Simplest Case ................................................................................... 9
1.1.3 Simple Input File .......................................................................................................... 12
1.1.4 Running and plotting MCNP geometries ..................................................................... 14
1.1.5 Surfaces and Complicated Cells: Intersections and Unions ......................................... 17
1.1.6 Duplicate Cells, Compliments and Translations: LIKE BUT and TRCL .................... 22
1.1.7 Filled Cells: Universes.................................................................................................. 26
1.1.8 Lattice Geometries ........................................................................................................ 32
1.1.9 Fully Specified Lattice Geometries .............................................................................. 40
1.2 Materials and Cross Sections .............................................................................................. 45
1.2.1 Specifying Materials ..................................................................................................... 45
1.2.2 Neutron cross sections .................................................................................................. 46
1.2.3 Low-energy neutron problems - thermal free gas treatment ........................................ 49
1.2.4 Low-energy neutron problem data - S(α,β) thermal treatment .................................... 50
1.2.5 Photon cross sections .................................................................................................... 53
1.2.6 Electron stopping powers for coupled photon and electron problems ......................... 57
1.2.7 Data and models for Ions and Charged Particles .......................................................... 61
1.2.8 Additional data diagnostics and recommendations ...................................................... 62
1.3 Sources ................................................................................................................................ 63
1.3.1 SDEF Fixed Sources ..................................................................................................... 63
1.3.2 SDEF Source Distributions .......................................................................................... 66
1.3.3 SDEF Dependent Distributions: DS ............................................................................. 69
1.3.4 Criticality Sources ........................................................................................................ 71
1.3.5 Surface Source Read and Write (SSR, SSW) ......................................................... 77
1.3.6 Checking sources .................................................................................................... 87
1.4 Output and Tallies ................................................