{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:KWMBBJBTZJCA7C6VYXRA3GMZ6D","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":"63f9671d17ab7ef7880178098c34bb294dbb115863266364fd141c96b75674ef","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2014-02-08T12:25:12Z","title_canon_sha256":"fe8144b2eeb818c7834576565de84f991ba6a189df872093ad869531a61925bf"},"schema_version":"1.0","source":{"id":"1402.1847","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1402.1847","created_at":"2026-05-18T02:42:08Z"},{"alias_kind":"arxiv_version","alias_value":"1402.1847v2","created_at":"2026-05-18T02:42:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1402.1847","created_at":"2026-05-18T02:42:08Z"},{"alias_kind":"pith_short_12","alias_value":"KWMBBJBTZJCA","created_at":"2026-05-18T12:28:35Z"},{"alias_kind":"pith_short_16","alias_value":"KWMBBJBTZJCA7C6V","created_at":"2026-05-18T12:28:35Z"},{"alias_kind":"pith_short_8","alias_value":"KWMBBJBT","created_at":"2026-05-18T12:28:35Z"}],"graph_snapshots":[{"event_id":"sha256:d6819a5e3ad4c6b68faf762c937e28696ea34e7ba389263ae3f88dd342dcdb97","target":"graph","created_at":"2026-05-18T02:42:08Z","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":"Neutron shielding simulations by using GEANT4 and PHITS code are performed. As a neutron source, $^{252}$Cf is considered and the energy distribution of the neutrons emitted from $^{252}$Cf is assumed the Watt fission spectrum. The neutron dose equivalent rates with and without the shield are estimated for shielding materials such as graphite, iron, polyethylene, NS-4-FR and KRAFTON-HB. For the neutron shielding simulations by using GEANT4, high precision (G4HP) model with G4NDL 4.2 based on ENDF-VII data are used. And for PHITS simulations, JENDL-4.0 library are used for the same purpose. It ","authors_text":"Chong Yeal Kim, Doyoon Kim, Jae Won Shin, Sang-In Bak, Seung-Woo Hong","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2014-02-08T12:25:12Z","title":"GEANT4 and PHITS simulations of the shielding of neutrons from $^{252}$Cf source"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1402.1847","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":"sha256:889f054302e132ffae290f405723477ac036a6b0d04e8c8a715f9e375af544c9","target":"record","created_at":"2026-05-18T02:42:08Z","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":"63f9671d17ab7ef7880178098c34bb294dbb115863266364fd141c96b75674ef","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2014-02-08T12:25:12Z","title_canon_sha256":"fe8144b2eeb818c7834576565de84f991ba6a189df872093ad869531a61925bf"},"schema_version":"1.0","source":{"id":"1402.1847","kind":"arxiv","version":2}},"canonical_sha256":"559810a433ca440f8bd5c5e20d9999f0f7bd48db64988c3275aea2f4961cb2e4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"559810a433ca440f8bd5c5e20d9999f0f7bd48db64988c3275aea2f4961cb2e4","first_computed_at":"2026-05-18T02:42:08.099410Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:42:08.099410Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xeU2nXUKpdx9DyKxJQHaqAGiVkvd7YDUXmMIoJev9q5oBRNvFfYuWPM+ejNATYB2TSMyxBPXKGl4berKoH03DA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:42:08.100024Z","signed_message":"canonical_sha256_bytes"},"source_id":"1402.1847","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:889f054302e132ffae290f405723477ac036a6b0d04e8c8a715f9e375af544c9","sha256:d6819a5e3ad4c6b68faf762c937e28696ea34e7ba389263ae3f88dd342dcdb97"],"state_sha256":"7ec646b1ef3cbbb36f6c307979a94fb228c7e1af884b8030e053dd4162e78412"}