ReactorMC

Educate · Reference · Create

Learn MCNP, OpenMC, SERPENT & SCONE — free Monte Carlo tutorials for nuclear engineering, reactor physics, and radiation transport.

Start learning Open NRDP Get the tools
tutorial pages
100+
tutorial pages
Monte Carlo codes
4
Monte Carlo codes
PNNL materials
411
PNNL materials
reactor database
52
reactor database
editor products
3
editor products

TUTORIALS

Monte Carlo education hub

100+ pages of structured lessons from first input to full reactor models — written for engineers, with every example verified.

MCNP27 pagesOpenMC22 pagesSERPENT21 pagesSCONE22 pagesFundamentals9 pagesRosetta Stoneinteractive
Start learning

// NRDP

Nuclear reference data portal

Evaluated cross sections, material cards, and reactor parameters — copy-paste ready for all four codes.

ALLEN σ(E) explorerDopplerMaterials library411 PNNLReactor analysis52 reactorsPeriodic table118 elementsLibrary referenceZAID + MTEngineering calculatorsN, fractions, k_effCommunity libraryBEAVRS decks
Open the portal
BELVOIR DYNAMICS

Software division of ReactorMC

GROVES, OWEN, and NICHOLS — plus browser demos for cross-code conversion and 3D geometry preview. MCNP workspace validation in OWEN and GROVES. Fully offline desktop option for air-gapped workflows.

GROVESv1.3.6 · desktopOWENv1.0.2 · VS CodeNICHOLSv1.0.0 · Sublime/N++Cross-code converterMCNP↔OpenMC · browser3D geometry previewlattice demo · browser
Explore the division Converter Visualizer

New here? Start with this path

Four steps from zero to a running reactor model — each one links straight into the site.

01

Learn the physics

Monte Carlo fundamentals: transport, tallies, statistics, and variance reduction.

02

Pick your code

MCNP, OpenMC, SERPENT, or SCONE? Compare licensing, workflow, and strengths.

03

Run a pin cell

Build your first criticality model with a worked PWR pin-cell example.

04

Equip your editor

Add syntax highlighting, validation, and lattice builders with GROVES, OWEN, or NICHOLS.

Pin cell in OpenMC →Pin cell in SERPENT →Pin cell in SCONE →17×17 assembly →

Latest additions

Recently shipped across the tutorial, data, and software sides of ReactorMC.

NRDP

NRDP terminal revamp

The whole reference portal rebuilt on a dark reference-terminal theme with a unified hub.

NRDP

PNNL compendium — 411 materials

Full PNNL-15870 Rev. 2 with generated MCNP, OpenMC, Serpent & SCONE cards.

Software

NICHOLS v1.0.0

Sublime Text & Notepad++ packages: syntaxes, completions, and 4 color schemes.

NRDP

ALLEN Doppler Studio

Multi-temperature resonance broadening with self-shielding and resonance integrals.

Software

OWEN 3D preview (browser)

Paste deck input, orbit a pin lattice, slice planes, and fullscreen — client-side.

Software

Cross-code converter

MCNP↔OpenMC stable in the browser, OWEN v1.0.2, and GROVES v1.3.6 — Rosetta diff in the IDE.