{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:YOUCUE3DQLL7WGRP3PAZ4QO75K","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":"ccc9514be7f8d186fef2d712554e017754dfbd27cef8274a95264fd953a21060","cross_cats_sorted":["astro-ph.IM","astro-ph.SR","hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2012-01-04T21:50:20Z","title_canon_sha256":"bd3e2c7489c587279c4facf3318094b211160c85cc4be1c1c42fb486578b2000"},"schema_version":"1.0","source":{"id":"1201.1017","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1201.1017","created_at":"2026-05-18T03:00:37Z"},{"alias_kind":"arxiv_version","alias_value":"1201.1017v1","created_at":"2026-05-18T03:00:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1201.1017","created_at":"2026-05-18T03:00:37Z"},{"alias_kind":"pith_short_12","alias_value":"YOUCUE3DQLL7","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_16","alias_value":"YOUCUE3DQLL7WGRP","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_8","alias_value":"YOUCUE3D","created_at":"2026-05-18T12:27:27Z"}],"graph_snapshots":[{"event_id":"sha256:35c030bd09a305829ec8d5e7706c6a9cdd7e1497972f6f22efd0a4705a577c05","target":"graph","created_at":"2026-05-18T03:00:37Z","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"},"paper":{"abstract_excerpt":"The proposed introduction of a soluble gadolinium (Gd) compound into water Cherenkov detectors can result in a high efficiency for the detection of free neutrons capturing on the Gd. The delayed 8 MeV gamma cascades produced by these captures, in coincidence with a prompt positron signal, serve to uniquely identify electron antineutrinos interacting via inverse beta decay. Such coincidence detection can reduce backgrounds, allowing a large Gd-enhanced water Cherenkov detector to make the first observation of supernova relic neutrinos and high precision measurements of Japan's reactor antineutr","authors_text":"Andrew Renshaw","cross_cats":["astro-ph.IM","astro-ph.SR","hep-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2012-01-04T21:50:20Z","title":"Research and Development for a Gadolinium Doped Water Cherenkov Detector"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1201.1017","kind":"arxiv","version":1},"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:f279900ef055970312e122cd143d5463a3574d5b5581ea9b6f32c45db13132e1","target":"record","created_at":"2026-05-18T03:00:37Z","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":"ccc9514be7f8d186fef2d712554e017754dfbd27cef8274a95264fd953a21060","cross_cats_sorted":["astro-ph.IM","astro-ph.SR","hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2012-01-04T21:50:20Z","title_canon_sha256":"bd3e2c7489c587279c4facf3318094b211160c85cc4be1c1c42fb486578b2000"},"schema_version":"1.0","source":{"id":"1201.1017","kind":"arxiv","version":1}},"canonical_sha256":"c3a82a136382d7fb1a2fdbc19e41dfea912ef6bc794074ba0740ac614011d147","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c3a82a136382d7fb1a2fdbc19e41dfea912ef6bc794074ba0740ac614011d147","first_computed_at":"2026-05-18T03:00:37.613093Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:00:37.613093Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"jRBdgcZu9JiHW+xQm8qC/z23ZoBN8AN6uD1HQZZv8u7i6Gkq4M+OD10aVYleKvY6WFAAralxap0O4o7eZXIPCw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:00:37.614026Z","signed_message":"canonical_sha256_bytes"},"source_id":"1201.1017","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f279900ef055970312e122cd143d5463a3574d5b5581ea9b6f32c45db13132e1","sha256:35c030bd09a305829ec8d5e7706c6a9cdd7e1497972f6f22efd0a4705a577c05"],"state_sha256":"2eb46cd3d0047e1f12b96b98174302bf83d09504b9abdaa4d3645b3c63ae8734"}