{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:CHTCUEQFVUNOJVM6EEHRG44HHH","short_pith_number":"pith:CHTCUEQF","canonical_record":{"source":{"id":"1712.10221","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2017-12-29T13:31:10Z","cross_cats_sorted":["physics.ins-det"],"title_canon_sha256":"2f56b6a16b7779e8f16b4404e60a9214d5287b22b4224bef9893269497c36159","abstract_canon_sha256":"ba1a30d0aec78b3f9b84463eb220632b5d741482ad39ddaf9a50704a0ed15962"},"schema_version":"1.0"},"canonical_sha256":"11e62a1205ad1ae4d59e210f13738739df0cf8e84d9ecc97f806ae4b2d103059","source":{"kind":"arxiv","id":"1712.10221","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1712.10221","created_at":"2026-05-18T00:27:03Z"},{"alias_kind":"arxiv_version","alias_value":"1712.10221v1","created_at":"2026-05-18T00:27:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1712.10221","created_at":"2026-05-18T00:27:03Z"},{"alias_kind":"pith_short_12","alias_value":"CHTCUEQFVUNO","created_at":"2026-05-18T12:31:10Z"},{"alias_kind":"pith_short_16","alias_value":"CHTCUEQFVUNOJVM6","created_at":"2026-05-18T12:31:10Z"},{"alias_kind":"pith_short_8","alias_value":"CHTCUEQF","created_at":"2026-05-18T12:31:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:CHTCUEQFVUNOJVM6EEHRG44HHH","target":"record","payload":{"canonical_record":{"source":{"id":"1712.10221","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2017-12-29T13:31:10Z","cross_cats_sorted":["physics.ins-det"],"title_canon_sha256":"2f56b6a16b7779e8f16b4404e60a9214d5287b22b4224bef9893269497c36159","abstract_canon_sha256":"ba1a30d0aec78b3f9b84463eb220632b5d741482ad39ddaf9a50704a0ed15962"},"schema_version":"1.0"},"canonical_sha256":"11e62a1205ad1ae4d59e210f13738739df0cf8e84d9ecc97f806ae4b2d103059","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:27:03.660131Z","signature_b64":"HGyqJ76VKNEhUXQpIPfgAR9hyuFuUgiuABRirLpJ4ojwFUwY3cEHC905XVvh5X39OP+4KBh8f6YNFPf2Vm+QAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"11e62a1205ad1ae4d59e210f13738739df0cf8e84d9ecc97f806ae4b2d103059","last_reissued_at":"2026-05-18T00:27:03.659673Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:27:03.659673Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1712.10221","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:27:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tt052+qf6hJeT2jLdmzFFHAB6flbZA32kT3xbf2uQazUb50hbalxdR1jCTNKsJjXwDWegRH11I2FSancX4GgAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T00:32:55.367250Z"},"content_sha256":"3f481677269935bc0e00cac34692929d3b8ac467380eb56e66273cf6c1074605","schema_version":"1.0","event_id":"sha256:3f481677269935bc0e00cac34692929d3b8ac467380eb56e66273cf6c1074605"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:CHTCUEQFVUNOJVM6EEHRG44HHH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Simulation of Physical Parameters for a Photoneutron Source","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.ins-det"],"primary_cat":"physics.comp-ph","authors_text":"Guilin Zhang, Hongwei Wang, Jianlong Han, Jifeng Hu, Jingen Chen, Longxiang Liu, Naxiu Wang, Pu Yang, Xianzhou Cai, Xiaohe Wang, Zuokang Lin","submitted_at":"2017-12-29T13:31:10Z","abstract_excerpt":"A compact photoneutron source (PNS), based on an electron linac was designed and constructed to provide required nuclear data for the design of Thorium Molten Salt Reactor (TMSR). Many local shielding are built to reduce the background of neutron and {\\gamma} rays, making the location of the time of flight (TOF) detector be fixed at 6.2 m place. Under the existing layout, some physical parameters are very difficult to get by the experiments, while can be obtained by the Monte Carlo simulation method. However, for the deep penetration problem of the neutron and {\\gamma} rays transport in the ch"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1712.10221","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:27:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zrS7EwRimEQSDGJlOnnOpnS5XNNaEUKrKSuamDTURM5cgrZjWax08yqBzA3aLdRDIHCnZhIqT7Wn92d+GXRuDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T00:32:55.367651Z"},"content_sha256":"e2ae8437a8b05b0b67d86bd8f4163ae5b098d1aa723c76e3c8af147302e9819d","schema_version":"1.0","event_id":"sha256:e2ae8437a8b05b0b67d86bd8f4163ae5b098d1aa723c76e3c8af147302e9819d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CHTCUEQFVUNOJVM6EEHRG44HHH/bundle.json","state_url":"https://pith.science/pith/CHTCUEQFVUNOJVM6EEHRG44HHH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CHTCUEQFVUNOJVM6EEHRG44HHH/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-31T00:32:55Z","links":{"resolver":"https://pith.science/pith/CHTCUEQFVUNOJVM6EEHRG44HHH","bundle":"https://pith.science/pith/CHTCUEQFVUNOJVM6EEHRG44HHH/bundle.json","state":"https://pith.science/pith/CHTCUEQFVUNOJVM6EEHRG44HHH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CHTCUEQFVUNOJVM6EEHRG44HHH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:CHTCUEQFVUNOJVM6EEHRG44HHH","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":"ba1a30d0aec78b3f9b84463eb220632b5d741482ad39ddaf9a50704a0ed15962","cross_cats_sorted":["physics.ins-det"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2017-12-29T13:31:10Z","title_canon_sha256":"2f56b6a16b7779e8f16b4404e60a9214d5287b22b4224bef9893269497c36159"},"schema_version":"1.0","source":{"id":"1712.10221","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1712.10221","created_at":"2026-05-18T00:27:03Z"},{"alias_kind":"arxiv_version","alias_value":"1712.10221v1","created_at":"2026-05-18T00:27:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1712.10221","created_at":"2026-05-18T00:27:03Z"},{"alias_kind":"pith_short_12","alias_value":"CHTCUEQFVUNO","created_at":"2026-05-18T12:31:10Z"},{"alias_kind":"pith_short_16","alias_value":"CHTCUEQFVUNOJVM6","created_at":"2026-05-18T12:31:10Z"},{"alias_kind":"pith_short_8","alias_value":"CHTCUEQF","created_at":"2026-05-18T12:31:10Z"}],"graph_snapshots":[{"event_id":"sha256:e2ae8437a8b05b0b67d86bd8f4163ae5b098d1aa723c76e3c8af147302e9819d","target":"graph","created_at":"2026-05-18T00:27:03Z","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":"A compact photoneutron source (PNS), based on an electron linac was designed and constructed to provide required nuclear data for the design of Thorium Molten Salt Reactor (TMSR). Many local shielding are built to reduce the background of neutron and {\\gamma} rays, making the location of the time of flight (TOF) detector be fixed at 6.2 m place. Under the existing layout, some physical parameters are very difficult to get by the experiments, while can be obtained by the Monte Carlo simulation method. However, for the deep penetration problem of the neutron and {\\gamma} rays transport in the ch","authors_text":"Guilin Zhang, Hongwei Wang, Jianlong Han, Jifeng Hu, Jingen Chen, Longxiang Liu, Naxiu Wang, Pu Yang, Xianzhou Cai, Xiaohe Wang, Zuokang Lin","cross_cats":["physics.ins-det"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2017-12-29T13:31:10Z","title":"Simulation of Physical Parameters for a Photoneutron Source"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1712.10221","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":"sha256:3f481677269935bc0e00cac34692929d3b8ac467380eb56e66273cf6c1074605","target":"record","created_at":"2026-05-18T00:27:03Z","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":"ba1a30d0aec78b3f9b84463eb220632b5d741482ad39ddaf9a50704a0ed15962","cross_cats_sorted":["physics.ins-det"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2017-12-29T13:31:10Z","title_canon_sha256":"2f56b6a16b7779e8f16b4404e60a9214d5287b22b4224bef9893269497c36159"},"schema_version":"1.0","source":{"id":"1712.10221","kind":"arxiv","version":1}},"canonical_sha256":"11e62a1205ad1ae4d59e210f13738739df0cf8e84d9ecc97f806ae4b2d103059","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"11e62a1205ad1ae4d59e210f13738739df0cf8e84d9ecc97f806ae4b2d103059","first_computed_at":"2026-05-18T00:27:03.659673Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:27:03.659673Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HGyqJ76VKNEhUXQpIPfgAR9hyuFuUgiuABRirLpJ4ojwFUwY3cEHC905XVvh5X39OP+4KBh8f6YNFPf2Vm+QAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:27:03.660131Z","signed_message":"canonical_sha256_bytes"},"source_id":"1712.10221","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3f481677269935bc0e00cac34692929d3b8ac467380eb56e66273cf6c1074605","sha256:e2ae8437a8b05b0b67d86bd8f4163ae5b098d1aa723c76e3c8af147302e9819d"],"state_sha256":"40013158ab63b64cd3cadf403a10a59de6a8eb89d84f82b1b82d9497e9cecaa1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IVst5KBFuoPpWDpjfGeZuovbhaKds3BRUO3XOuqhSpik9rl2LBnxHLFtIT/zszsnz4PTbLnd71nIARLLbSXrCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T00:32:55.371950Z","bundle_sha256":"c71ee01feda4a57eec7effd7232a0748c9975141f967a309183fdeb64a40e9c4"}}