{"paper":{"title":"Environmental $\\gamma$-Ray Flux in Hall C at LNGS and Its Correlation with Radon Activity","license":"http://creativecommons.org/licenses/by/4.0/","headline":"Environmental gamma-ray flux in Hall C at LNGS averages 0.46 cm^{-2} s^{-1} between 57 and 2800 keV and correlates directly with radon levels.","cross_cats":[],"primary_cat":"physics.ins-det","authors_text":"C. Ghiano, D. Cano-Ott, G. Vera D\\'iaz, G. Zuzel, J. Plaza del Olmo, L. Luzzi, M. Laubenstein, P. Agnes, R. Santorelli, T. Mroz, V. Pesudo Fortes","submitted_at":"2026-05-11T00:32:20Z","abstract_excerpt":"We report a comprehensive measurement of the environmental $\\gamma$-ray flux in Hall C of the Gran Sasso National Laboratory. A spatial mapping of the radiation was carried out using a high-purity germanium detector mounted on a movable cart and deployed at eight locations within the hall. The detector response function and full-energy-peak efficiencies were determined through Geant4 simulations validated with calibrated $\\gamma$-ray sources, with particular attention devoted to the efficiency modeling and associated systematic uncertainties. In the energy range of 57-2800 keV, the average $\\g"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"In the energy range of 57-2800 keV, the average γ-ray flux is measured to be (0.46 ± 0.06_stat ± 0.03_syst) cm^{-2} s^{-1}. A clear correlation is observed between the environmental γ-ray rate and the ambient radon concentration, consistent with the short-lived daughters of 222Rn.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The Geant4 simulations correctly model the full-energy-peak efficiencies and detector response for the actual environmental gamma spectrum at all eight locations; any mismatch would directly scale the reported flux.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"The average environmental gamma-ray flux in Hall C at LNGS is 0.46 cm^{-2} s^{-1} (57-2800 keV) and correlates with ambient radon concentration.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"Environmental gamma-ray flux in Hall C at LNGS averages 0.46 cm^{-2} s^{-1} between 57 and 2800 keV and correlates directly with radon levels.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"eedc7d9b6057e10610f26e1d26d3e953f0bc8768a1aef83f829912b7a3128b6b"},"source":{"id":"2605.09835","kind":"arxiv","version":2},"verdict":{"id":"b514f1af-acb4-482c-a0b4-21c2e2d00c64","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-12T04:12:41.194921Z","strongest_claim":"In the energy range of 57-2800 keV, the average γ-ray flux is measured to be (0.46 ± 0.06_stat ± 0.03_syst) cm^{-2} s^{-1}. A clear correlation is observed between the environmental γ-ray rate and the ambient radon concentration, consistent with the short-lived daughters of 222Rn.","one_line_summary":"The average environmental gamma-ray flux in Hall C at LNGS is 0.46 cm^{-2} s^{-1} (57-2800 keV) and correlates with ambient radon concentration.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The Geant4 simulations correctly model the full-energy-peak efficiencies and detector response for the actual environmental gamma spectrum at all eight locations; any mismatch would directly scale the reported flux.","pith_extraction_headline":"Environmental gamma-ray flux in Hall C at LNGS averages 0.46 cm^{-2} s^{-1} between 57 and 2800 keV and correlates directly with radon levels."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2605.09835/integrity.json","findings":[],"available":true,"detectors_run":[{"name":"claim_evidence","ran_at":"2026-05-20T07:02:01.353621Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"ai_meta_artifact","ran_at":"2026-05-19T16:35:05.868485Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"doi_title_agreement","ran_at":"2026-05-19T12:31:17.577911Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"doi_compliance","ran_at":"2026-05-19T09:53:23.769772Z","status":"completed","version":"1.0.0","findings_count":0}],"snapshot_sha256":"8bdfdb88c2363bc7a51f7f6ba450af2030739e932c25f08b11603af3fb8b3506"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":2,"snapshot_sha256":"d545ff408e8ea2cdc2329906bde00da5d4802dbf6ac8a19d74e9de1aab3b9410"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}