Tritium transport · Multiphysics · Materials
Fusion

TMAP8.

TMAP8 (Tritium Migration Analysis Program, version 8) is a MOOSE-based open-source application from Idaho National Laboratory for hydrogen-isotope transport in materials and systems: diffusion with trapping and release, surface and interface conditions, and coupled heat transfer, solved as finite-element problems on the MOOSE framework.

Hub integration plannedUpstream exampleSources checked 2026-10-10
Engineering questions it helps answer
  • How much tritium is retained in a plasma-facing component, and how much permeates to the coolant, under cyclic heat and particle loads?
  • How do trapping energies, trap densities and interface solubility jumps change inventory and permeation in a layered metal structure?
  • How does coupled heat conduction change diffusivity and release across a pulsed operating schedule?
Physics scope
  • Hydrogen-isotope diffusion with Arrhenius diffusivity and solubility
  • Trapping and thermal release (detrapping) in one or more trap populations
  • Chemical-potential equilibrium at material interfaces (solubility-ratio jumps)
  • Coupled heat conduction with temperature-dependent properties
  • Transient simulation of pulsed operating schedules

Limitations

A MOOSE-based application that must be built with MOOSE; it has no tagged GitHub releases, so pinning a version means recording a commit. Model fidelity depends on material data (diffusivities, solubilities, trap parameters) that the user must supply, and published demonstrations reproduce papers rather than validating against experiment.

Fusion relevance

Fusion-specific by design: tritium inventory, retention and permeation in fusion materials are its core use, and its published examples include an ITER-like divertor monoblock under pulsed operation. It inherits MOOSE's parallel finite-element machinery and couples to other MOOSE applications.

Upstream examples

Published by the project itself. These are the project's own tutorials, not Morton Labs runs.

Reference workflows on this site
Upstream example

NRIC Virtual Test Bed: tritium in a divertor monoblock during pulsed operation (TMAP8)

How does pulsed tokamak operation change the tritium retained inside an ITER-like tungsten/copper/CuCrZr divertor monoblock and the tritium that permeates through to the coolant tube, when heat conduction and hydrogen-isotope diffusion with trapping are solved together in 2D?

Upstream exampleTMAP8MOOSE
People

Developed by Idaho National Laboratory (operated by Battelle Energy Alliance, LLC). No individual profiles are published for this project yet.

Roles name a specific relationship with evidence. Authorship of a paper is not maintainership, and a listed person is not a Morton Labs partner or endorser.

This entry was written by Morton Labs from public sources and last checked on 2026-10-10. Spotted an error, or want something changed or removed? Email zach@mortonlabs.ai with the page address.

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