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Engineering & Subsystems

Heat-Flux Handling

Managing the intense heat loads on plasma-facing components.

Engineering & SubsystemsUpdated 2026-08-11
First-wall load
1.97 MW/m2

The divertor and first wall must survive concentrated heat loads without failing. HYPERION's first wall is rated for 1.97 MW/m2, and its divertor relies on a high radiated fraction to spread the load — a named performance gate.

The burner's linear geometry and low neutron fraction give it far gentler heat-handling requirements.

Common questions

What is the heat-flux handling problem?

Concentrated exhaust power can exceed what any surface survives, so the divertor and first wall must be actively cooled and, where possible, shielded by radiating the power away before it lands.

What sets the limit?

Material and cooling limits on the plasma-facing components. Managing peak heat flux — largely by raising the radiated fraction — is one of HYPERION's named performance gates.

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Content reviewed August 2026 · design-and-simulation stage