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Technical Library › Glossary of Fusion & Plasma Terms
Glossary
Aegis / MetroVolt burner · design render
Aegis / MetroVolt burner · design render · © 2026 KFE

Normal Zone

REBCO critical surface — the magnet operating envelope.
REBCO critical surface — the magnet operating envelope. canon 2026-08-27 · © 2026 KFE

The resistive region that appears when a superconductor quenches.

Glossary of Fusion & Plasma TermsUpdated 2026-08-11

A normal zone is the patch of a coil that has lost superconductivity and become resistive during a quench, generating heat that must be managed. Detecting and responding to it is the essence of quench protection.

Related

Quench Propagation →Quench Detection →Hot-Spot Temperature →
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