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Technical LibraryGlossary of Fusion & Plasma Terms
Glossary

Residual Gas Analysis

Identifying the gases present in the vacuum.

Glossary of Fusion & Plasma TermsUpdated 2026-08-11

A residual gas analyser (a small mass spectrometer) identifies the species in the vacuum, monitoring purity, leaks and wall conditions. It is a routine vacuum diagnostic.

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Content reviewed August 2026 · design-and-simulation stage