OWEN
Open Workflow for Engineered Neutronics
Text editor and 3D viewer for MCNP, OpenMC, Serpent, and SCONE files.
Multi-tab editor
Syntax highlighting, minimap, block selection, word wrap
3D and 2D preview
Rotate, zoom, pan, cross-sections
Lattice Builder
Visual grid editor for pin maps
Templates
Pin cells, assemblies, quarter-core, BWR bundles
v1.0.0 • Windows 10/11 • ~330 MB
Released March 2026 • A DynamicMC Product | ReactorMC
Security & Privacy
OWEN does not collect or transmit any data. No telemetry, analytics, or network calls. Your input files stay on your machine.
Downloads are hosted on GitHub Releases with signed tags. Verify integrity using the SHA-256 checksums published on each release page.
Air-gapped use: Download the installer on a connected machine, verify the checksum, then transfer via USB or approved media. OWEN runs fully offline after installation.
If your organization handles sensitive or export-controlled nuclear data, follow your internal policies for software approval.
View releases and checksums → Verify script (PowerShell) Security policy