Welcome to FARIS
FARIS, the Fusion Analysis and Reactor Integration Simulator, follows a fusion plant from 3D neutron transport to thirty years of operation. It shows how a blanket and shield design changes tritium breeding, magnet exposure, component replacements and net electricity year by year, and how sure those numbers are.
This handbook covers FARIS 0.1.0.
This release is a demo
FARIS 0.1.0 is a deliberately narrow demonstration, complete for one study: an ARC-inspired tokamak in four arrangements, from transport to thirty years of operation with uncertainty. The full product widens the geometry and adds activation and peak magnet fluence. Where FARIS is going lists what comes next.
Research screening only
FARIS results are not a licensing, safety or design basis. Every number is labelled as calculated, authored, literature, conditional or not evaluated. Reading the numbers explains each label. The statement is in the bottom bar of every step and in every export.
What the demo studies
One compact D-T tokamak, ARC-inspired, with 525 MW of fusion power, in four arrangements:
- Two blanket/shield allocations inside the same radial build.
- For each allocation, a finite outboard service port, and a matched port-free control.
The study asks one question: what changes when you move thickness from the neutron shield to the breeding blanket?
| Part | What you get |
|---|---|
| Transport | Coupled neutron/photon OpenMC results: tritium production, heating, flux spectra, a 3D flux map, and fast-neutron flux on three regions of the magnet, each with its Monte Carlo standard error. |
| Operation | A 30-year history that recalculates in about a second as you move sliders: tritium inventory, fuel-limited stops, planned outages, replacements and net electricity. |
| Uncertainty | Hundreds of histories on transport rates sampled from the recorded covariance. Every output gets a median, a 90 % range and event probabilities. |
| Compare | The four arrangements side by side with two-sigma flags, a paired comparison of the ensembles, and a seven-point allocation sweep. |
| Evidence | Avila Core receipts, a .faris file that holds the whole study, and export to a PDF brief, CSV tables and charts. |
Start here
Download and verify the Linux package, then take the tour. You do not need OpenMC, nuclear data or a network connection to explore the recorded study.
Then read one chapter for each step of the workspace: Design, Simulate, Operate, Compare and Evidence. Read Reading the numbers and Scope and limits before you quote any result.
Find help
Use the search button or press / to search this handbook. Troubleshooting covers the messages the app shows. Report reproducible problems through GitHub issues, with your version and the message you saw.