MCKIT: MCNP model and results processing utilities

The mckit package provides a programming framework and command line tools to manipulate complex MCNP models. When a model is rather complex and its description occupies thousands of text lines it becomes hard to modify it and integrate several model manually. The package automates integration process.

Table of contents

• MCKIT: MCNP model and results processing utilities
  • Usage
    • Command line interface
    • Library
  • Installation
  • Versioning
  • Contributors

Usage

Command line interface

Usage: mckit [OPTIONS] COMMAND [ARGS]...

  Tools to process MCNP models and results

Options:
  --override / --no-override
  --version                   Show the version and exit.
  -v, --verbose               Log debugging info to stderr.  [default: False]
  -q, --quiet                 Suppress info to stderr.  [default: False]
  --logfile / --no-logfile    Log to file.  [default: True]
  --profile_mem               Profile peak memory use.  [default: False]
  --help                      Show this message and exit.

Commands:
  check      Read MCNP model(s) and show statistics and clashes.
  compose    Merge universes and envelopes into MCNP model using merge...
  concat     Concat text files.
  decompose  Separate an MCNP model to envelopes and filling universes
  split      Splits MCNP model to text portions (opposite to concat)
  transform  Transform MCNP model(s) with one of specified transformation.

Library

The library allows subtraction and merging models, renaming objects (cells, surfaces, compositions, universes), simplification of cell expressions (removing redundant surfaces), homogenization, computation of cell volumes and material masses, and more.

LOG.info("Loading c-model envelopes")
envelopes = load_model(str(CMODEL_ROOT / "c-model.universes/envelopes.i"))

cells_to_fill = [11, 14, 75]
cells_to_fill_indexes = [c - 1 for c in cells_to_fill]

LOG.info("Attaching bounding boxes to c-model envelopes %s", cells_to_fill)
attach_bounding_boxes(
    [envelopes[i] for i in cells_to_fill_indexes], tolerance=5.0, chunk_size=1
)
LOG.info("Backing up original envelopes")
envelopes_original = envelopes.copy()

antenna_envelop.rename(start_cell=200000, start_surf=200000)

LOG.info("Subtracting antenna envelop from c-model envelopes %s", cells_to_fill)
envelopes = subtract_model_from_model(
    envelopes, antenna_envelop, cells_filter=lambda c: c in cells_to_fill
)
LOG.info("Adding antenna envelop to c-model envelopes")
envelopes.add_cells(antenna_envelop, name_rule="clash")
envelopes_path = "envelopes+antenna-envelop.i"
envelopes.save(envelopes_path)
LOG.info("The model of HFSR in envelopes is saved to %s", envelopes_path)

Installation

Installing from pypi:

pip3 install mckit

Installing from github.com:

pip3 install git+https://github.com/MC-kit/mckit.git

Versioning

This software follows Semantic Versioning

Contributors

• Roman Rodionov
• Dmitri Portnov