FOAK to NOAK to BOAK

The breeder program is a sequence: first-of-a-kind proves the machine, then nth-of-a-kind and best-of-a-kind units standardize and improve it.

A three-step learning curve

The breeder is built as a short series rather than a one-off. The first-of-a-kind (FOAK) unit proves the physics and the foundry function. Nth-of-a-kind (NOAK) units apply the lessons of the first build. Best-of-a-kind (BOAK) units standardize the design for repeatable manufacture.

FOAK: prove it

FOAK carries the physics risk. Its job is to reach gain, breed tritium, and validate the design point against pre-registered predictions. It is expected to be the slowest to build and the most heavily instrumented, because its purpose is measurement and risk retirement.

NOAK: refine it

NOAK units incorporate what FOAK teaches: assembly steps that took too long, components that underperformed, diagnostics that proved unnecessary or missing. NOAK is where build time and reliability improve while the design point stays essentially fixed.

BOAK: standardize it

BOAK is the settled design intended for repeatable fabrication and predictable output. At this stage the machine is a manufactured product with known lead times and known performance, suited to running as a foundry with high availability.

• FOAK retires physics and integration risk
• NOAK retires build and operability risk
• BOAK locks the standard for a small foundry fleet

The whole sequence remains a plan. FOAK is not yet built. The learning-curve framing describes how the program intends to move from a single demonstrated machine to a small, reproducible foundry fleet without overclaiming at any step.