Notes on verification

Corroborated by Wikipedia, CERN, and an arXiv technical report showing 'beam dump' is an established accelerator-engineering term reused by analogy for fixed-target experiments; however, no single source explicitly states the etymological derivation as a historical fact, so it's inferred from consistent usage rather than a direct etymological citation. [tier=silver indep_score=0.925 clusters=2 claim_tier=notable]