Neutronics toolbox

A modular toolkit of fast and reliable libraries for neutronics analysis

The full library documentation published here

This is a pre-release version for testing and development, with the API subject to change until a stable 1.0 release. The core structure and libraries are written but it is a matter of finding time to extend all the high-level features and functionality

Command line tools

Several simple and efficient command line tools are written using this core library.

Un-linked tools will be made public when I have time to clean them up.

Command line	Description
mesh2vtk	Convert any meshtal tally to various VTK formats
splitmesh	Split meshtal tallies into individual files
posvol	Inspect and convert binary UKAEA CuV posvol files
mesh2ww	Convert any meshtal tally to a mesh-based global weight windows
decaydata	CLI for all decays data information from the IAEA chart of nuclides
fisdef	Generate source cards of any decay type from FISPACT-II inventories
fisjson	General convenience tools for quickly assessing FISPACT-II inventories
bude	Build-up Density Extrapolation (BUDE) mesh generation
pointextract	Extract voxel results for any point(s) in a mesh

All tools are fully documented with detailed --help messages, including examples for common use cases.

Library overview

The ntools toolkit contains a collection of mostly modular libraries for common fusion neutronics tasks and analysis.

Crate	Description
fispact	Analysis tools for FISPACT-II inventory calculations
iaea	Module for interacting with the IAEA decay data API
mesh	MCNP mesh tally operations and file parsing
posvol	Se/deserialiser for UKAEA CuV posvol binaries
utils	Common utilities and extension traits
weights	Tools for MCNP weight window operations
wwgen	Weight window generation methods for MCNP

The decision was made to split the command line tools and core libraries into separate repositories for better maintainability, scalability, and shorter compile times.

Modular crates

ntools is a collection of utility crates that can be used individually or in combination.

The ntools crates are included as dependencies through feature flags. Specify "full" to include everything.

[dependencies]
ntools = { git = "https://github.com/repositony/ntools.git", features = ["full"] }

It is recommended that users are more selective to avoid compiling unnecessary dependencies.

For example, if only the fispact and iaea crates are needed:

[dependencies]
ntools = { git = "https://github.com/repositony/ntools.git", features = ["fispact", "iaea"] }

Documentation and Tests

To reproduce the full library documentation seen here, specify the "full" feature flag.

cargo doc --workspace --no-deps --features full

To run all tests for all modules, use the --workspace flag.

cargo test --workspace