{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:G4WME7ZYNYDNYXFXEGDCMX7YGL","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"eca5f834b97a7cac66611383202a6a19b0ff04f9e71a76ccb0c88c5d9514527d","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2025-04-21T22:02:23Z","title_canon_sha256":"a3a18bfd55ee34e1744cb779dc0a8c74a336ec9d0b21d1b881f88a84e8df243c"},"schema_version":"1.0","source":{"id":"2504.15464","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2504.15464","created_at":"2026-07-05T11:50:35Z"},{"alias_kind":"arxiv_version","alias_value":"2504.15464v3","created_at":"2026-07-05T11:50:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2504.15464","created_at":"2026-07-05T11:50:35Z"},{"alias_kind":"pith_short_12","alias_value":"G4WME7ZYNYDN","created_at":"2026-07-05T11:50:35Z"},{"alias_kind":"pith_short_16","alias_value":"G4WME7ZYNYDNYXFX","created_at":"2026-07-05T11:50:35Z"},{"alias_kind":"pith_short_8","alias_value":"G4WME7ZY","created_at":"2026-07-05T11:50:35Z"}],"graph_snapshots":[{"event_id":"sha256:64114835db2ce349cacc9a31eff21800734db8898ffd258248b8fd493eaddf3a","target":"graph","created_at":"2026-07-05T11:50:35Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2504.15464/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Rare event searches such as neutrinoless double beta decay and Weakly Interacting Massive Particle detection require ultra-low background detectors. Radon contamination is a significant challenge for these experiments, which employ highly sensitive radon assay techniques to identify and select low-emission materials. This work presents the development of ultra-sensitive electrostatic chamber (ESC) instruments designed to measure radon emanation in a recirculating gas loop, for future lower background experiments. Unlike traditional methods that separate emanation and detection steps, this syst","authors_text":"A. Amy, A. Atencio, A. Bolotnikov, A. Dragone, A. Emara, A. Gorham, A. Iverson, A. Karelin, A. Kuchenkov, A. Larson, A. Lennarz, A. Nolan, A. Odian, A. Perna, A. Piepke, A. Pocar, B. Burnell, B. Eckert, B. Foust, B. G. Lenardo, B. Mong, C. A. Hardy, C. Licciardi, C. Malbrunot, C. T. Overman, D. Cesmecioglu, D. Chernyak, D. C. Moore, D. Gallacher, D. Keblbeck, D. Ray, D. S. Leonard, E. Angelico, E. Brown, E. Caden, E. Hein, E. P. Bernard, E. Raguzin, E. van Bruggen, F. Reti\\'ere, F. Spadoni, G. F. Cao, G. Giacomini, G. Gratta, G. Li, G. Richardson, G. S. Ortega, H. B. Yang, H. Lewis, H. Peltz Smalley, H. Rasiwala, H. Wang, H. Xu, I. J. Arnquist, I. Kotov, J. Bane, J. Breslin, J. C. Nzobadila Ondze, J. D. Holt, J. L. Orrell, J. Masbou, J. P. Brodsky, J. Zhao, K. G. Leach, K. Leung, K. Ni, K. S. Kumar, L. Darroch, L. J. Wen, L. Pagani, L. Q. Cao, L. Si, L. Yang, M. B. Latif, M. Chiu, M. Elbeltagi, M. Heffner, M. J. Dolinski, M. L. di Vacri, M. Marquis, M. Medina-Peregrina, M. Vidal, M. Walent, M. Watts, M. Wehrfritz, M. Worcester, M. Yu, nEXO Collaboration: A. Anker, N. Fatemighomi, N. Gallice, N. Rocco, O. A. Tyuka, O. Zeldovich, P. A. Breur, P. Acharya, P. C. Rowson, Q. D. Wang, R. Collister, R. DeVoe, R. Gornea, R. H. M. Tsang, R. Lindsay, R. MacLellan, R. Rai, R. Ross, R. Saldanha, S. Bron, S. C. Nowicki, S. Hedges, S. Majidi, S. Mngonyama, S. Rescia, S. Sangiorgio, S. Sekula, S. Thibado, S. Triambak, S. Viel, S. Wilde, T. Bhatta, T. Brunner, T. Daniels, T. Shetty, T. Totev, U. Wichoski, V. Belov, V. Radeka, V. Stekhanov, W. Fairbank, W. Gillis, W. Wei, X. E. Ngwadla, X. Li, X. L. Sun, X. M. Wu, X. S. Jiang, Y. D. Guan, Y. G. Wang, Y. S. Fu, Y. Y. Ding, Z. Li","cross_cats":["hep-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2025-04-21T22:02:23Z","title":"Ultra-sensitive radon assay using an electrostatic chamber in a recirculating system"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2504.15464","kind":"arxiv","version":3},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:f8274f1f0a0cbe8f61094aee6e500830e19fd0c8ee4b2560f4f5bd1cb9f1f962","target":"record","created_at":"2026-07-05T11:50:35Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"eca5f834b97a7cac66611383202a6a19b0ff04f9e71a76ccb0c88c5d9514527d","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2025-04-21T22:02:23Z","title_canon_sha256":"a3a18bfd55ee34e1744cb779dc0a8c74a336ec9d0b21d1b881f88a84e8df243c"},"schema_version":"1.0","source":{"id":"2504.15464","kind":"arxiv","version":3}},"canonical_sha256":"372cc27f386e06dc5cb72186265ff832cc1dc2a976ce999cc6f9df11a8847ce0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"372cc27f386e06dc5cb72186265ff832cc1dc2a976ce999cc6f9df11a8847ce0","first_computed_at":"2026-07-05T11:50:35.577851Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:50:35.577851Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"e9gHjqRvOGt28vFsBdDM+NvIo+aEDBpt06ObaFuQnEdQiQClJYvGL0pwGSxPlCa6WmxfifA/GjK6RKkOF5jCBg==","signature_status":"signed_v1","signed_at":"2026-07-05T11:50:35.578422Z","signed_message":"canonical_sha256_bytes"},"source_id":"2504.15464","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f8274f1f0a0cbe8f61094aee6e500830e19fd0c8ee4b2560f4f5bd1cb9f1f962","sha256:64114835db2ce349cacc9a31eff21800734db8898ffd258248b8fd493eaddf3a"],"state_sha256":"f02cee42eeb2e568398a75110f6b97ce4ff2f7621fe4ceb7d07d856bfd60dc81"}