{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:INUXIYEUF5HCK6Z5MPW5JDEPW3","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":"3b052258d1f0bc1a9db8c91c23f918b288d62e776036746e95233086d1f51770","cross_cats_sorted":["nucl-ex"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ins-det","submitted_at":"2022-12-01T00:00:15Z","title_canon_sha256":"c5c540dca55bf6f5603b8162b2407d46a572c025fc6cb7fa86c8fe83fb3c2b81"},"schema_version":"1.0","source":{"id":"2212.04958","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2212.04958","created_at":"2026-07-05T06:06:07Z"},{"alias_kind":"arxiv_version","alias_value":"2212.04958v2","created_at":"2026-07-05T06:06:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2212.04958","created_at":"2026-07-05T06:06:07Z"},{"alias_kind":"pith_short_12","alias_value":"INUXIYEUF5HC","created_at":"2026-07-05T06:06:07Z"},{"alias_kind":"pith_short_16","alias_value":"INUXIYEUF5HCK6Z5","created_at":"2026-07-05T06:06:07Z"},{"alias_kind":"pith_short_8","alias_value":"INUXIYEU","created_at":"2026-07-05T06:06:07Z"}],"graph_snapshots":[{"event_id":"sha256:fd3e639f828ff0cf8af2f5d5bf4c94828aec24d565121a821378e5c8ad9a8b7a","target":"graph","created_at":"2026-07-05T06:06:07Z","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/2212.04958/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Searches for the permanent electric dipole moment of the neutron (nEDM) provide strong constraints on theories beyond the Standard Model of particle physics.\n  The TUCAN collaboration is constructing a source for ultracold neutrons (UCN) and an apparatus to search for the nEDM at TRIUMF, Vancouver, Canada.\n  In this work, we estimate that the spallation-driven UCN source based on a superfluid helium converter will provide $(1.38\\pm0.02) \\times 10^7$ polarized UCN at a density of $217\\pm3$~UCN/cm$^3$ to a room-temperature EDM experiment per fill.\n  With $(1.51\\pm0.02) \\times 10^6$ neutrons dete","authors_text":"Ruediger Picker, Ryohei Matsumiya, Sean Vanbergen, Shinsuke Kawasaki, Steve Sidhu, Takahiro Okamura, Wolfgang Schreyer","cross_cats":["nucl-ex"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ins-det","submitted_at":"2022-12-01T00:00:15Z","title":"Estimated performance of the TRIUMF ultracold neutron source and electric dipole moment apparatus"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2212.04958","kind":"arxiv","version":2},"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":"sha256:2f0f7777aa08234c06c7fe4a74da00dded68fd9e7aed8454661ccd6dba2ac025","target":"record","created_at":"2026-07-05T06:06:07Z","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":"3b052258d1f0bc1a9db8c91c23f918b288d62e776036746e95233086d1f51770","cross_cats_sorted":["nucl-ex"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ins-det","submitted_at":"2022-12-01T00:00:15Z","title_canon_sha256":"c5c540dca55bf6f5603b8162b2407d46a572c025fc6cb7fa86c8fe83fb3c2b81"},"schema_version":"1.0","source":{"id":"2212.04958","kind":"arxiv","version":2}},"canonical_sha256":"43697460942f4e257b3d63edd48c8fb6f3b6124bed4f3dbfc2c39262052fc6b0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"43697460942f4e257b3d63edd48c8fb6f3b6124bed4f3dbfc2c39262052fc6b0","first_computed_at":"2026-07-05T06:06:07.699899Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:06:07.699899Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4P1pXhSfN7eJPPsMr1m0IYvdY2DhfUOmQBUClhHmRCEv4c3HW02LbQmqJmSiKHcQdXbNYvVhynKgBPcm8CcXCw==","signature_status":"signed_v1","signed_at":"2026-07-05T06:06:07.700378Z","signed_message":"canonical_sha256_bytes"},"source_id":"2212.04958","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2f0f7777aa08234c06c7fe4a74da00dded68fd9e7aed8454661ccd6dba2ac025","sha256:fd3e639f828ff0cf8af2f5d5bf4c94828aec24d565121a821378e5c8ad9a8b7a"],"state_sha256":"c422095d415093cb2f22b72b28517f74356eca29bc8e0c079c01e493cd69ff1d"}