{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:EYU6IVIIC2A6U5U4SXCGLA2C4O","short_pith_number":"pith:EYU6IVII","schema_version":"1.0","canonical_sha256":"2629e455081681ea769c95c4658342e3b90f9644073a9870b8ce2874ce23b0e4","source":{"kind":"arxiv","id":"2606.00907","version":1},"attestation_state":"computed","paper":{"title":"Rossi-alpha Benchmark Validation of a Static Alpha Eigenvalue Capability in OpenMC","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-ex","physics.app-ph","physics.atom-ph"],"primary_cat":"physics.comp-ph","authors_text":"Alessandro Ingegno, Benoit Forget, David Heinrichs, William Zywiec","submitted_at":"2026-05-30T22:06:01Z","abstract_excerpt":"A static alpha eigenvalue capability was implemented in a modified version of the open-source Monte Carlo radiation transport code OpenMC and validated against Rossi-alpha measurements from 21 delayed-critical benchmark experiments and 33 subcritical configurations spanning fast, intermediate, and thermal systems with U-233, HEU, IEU, LEU, and plutonium fuels. The effective delayed neutron fraction was calculated using the k-prompt method, and the prompt neutron lifetime was calculated using the iterated fission probability method, both evaluated within the standard k-eigenvalue power iteratio"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2606.00907","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2026-05-30T22:06:01Z","cross_cats_sorted":["nucl-ex","physics.app-ph","physics.atom-ph"],"title_canon_sha256":"84c03ddb8b14b2325936cfc14b80b8202685a847a7817cbd60503328ac6d45f8","abstract_canon_sha256":"e8c91529d3a59aaaac3797e83d9cad7e97c3f79b77d5398e515c7a16e1ec4cc5"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-02T01:04:09.266174Z","signature_b64":"NMwIWLiyzrIOPonp8GH+NJMJC1SxDd9bvNfcLfmmrsEY1evaYY2ToLLgqFABOBizxXqfJc0tv4qR12HEHgmECw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2629e455081681ea769c95c4658342e3b90f9644073a9870b8ce2874ce23b0e4","last_reissued_at":"2026-06-02T01:04:09.265765Z","signature_status":"signed_v1","first_computed_at":"2026-06-02T01:04:09.265765Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Rossi-alpha Benchmark Validation of a Static Alpha Eigenvalue Capability in OpenMC","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-ex","physics.app-ph","physics.atom-ph"],"primary_cat":"physics.comp-ph","authors_text":"Alessandro Ingegno, Benoit Forget, David Heinrichs, William Zywiec","submitted_at":"2026-05-30T22:06:01Z","abstract_excerpt":"A static alpha eigenvalue capability was implemented in a modified version of the open-source Monte Carlo radiation transport code OpenMC and validated against Rossi-alpha measurements from 21 delayed-critical benchmark experiments and 33 subcritical configurations spanning fast, intermediate, and thermal systems with U-233, HEU, IEU, LEU, and plutonium fuels. The effective delayed neutron fraction was calculated using the k-prompt method, and the prompt neutron lifetime was calculated using the iterated fission probability method, both evaluated within the standard k-eigenvalue power iteratio"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.00907","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2606.00907/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2606.00907","created_at":"2026-06-02T01:04:09.265809+00:00"},{"alias_kind":"arxiv_version","alias_value":"2606.00907v1","created_at":"2026-06-02T01:04:09.265809+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.00907","created_at":"2026-06-02T01:04:09.265809+00:00"},{"alias_kind":"pith_short_12","alias_value":"EYU6IVIIC2A6","created_at":"2026-06-02T01:04:09.265809+00:00"},{"alias_kind":"pith_short_16","alias_value":"EYU6IVIIC2A6U5U4","created_at":"2026-06-02T01:04:09.265809+00:00"},{"alias_kind":"pith_short_8","alias_value":"EYU6IVII","created_at":"2026-06-02T01:04:09.265809+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/EYU6IVIIC2A6U5U4SXCGLA2C4O","json":"https://pith.science/pith/EYU6IVIIC2A6U5U4SXCGLA2C4O.json","graph_json":"https://pith.science/api/pith-number/EYU6IVIIC2A6U5U4SXCGLA2C4O/graph.json","events_json":"https://pith.science/api/pith-number/EYU6IVIIC2A6U5U4SXCGLA2C4O/events.json","paper":"https://pith.science/paper/EYU6IVII"},"agent_actions":{"view_html":"https://pith.science/pith/EYU6IVIIC2A6U5U4SXCGLA2C4O","download_json":"https://pith.science/pith/EYU6IVIIC2A6U5U4SXCGLA2C4O.json","view_paper":"https://pith.science/paper/EYU6IVII","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2606.00907&json=true","fetch_graph":"https://pith.science/api/pith-number/EYU6IVIIC2A6U5U4SXCGLA2C4O/graph.json","fetch_events":"https://pith.science/api/pith-number/EYU6IVIIC2A6U5U4SXCGLA2C4O/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/EYU6IVIIC2A6U5U4SXCGLA2C4O/action/timestamp_anchor","attest_storage":"https://pith.science/pith/EYU6IVIIC2A6U5U4SXCGLA2C4O/action/storage_attestation","attest_author":"https://pith.science/pith/EYU6IVIIC2A6U5U4SXCGLA2C4O/action/author_attestation","sign_citation":"https://pith.science/pith/EYU6IVIIC2A6U5U4SXCGLA2C4O/action/citation_signature","submit_replication":"https://pith.science/pith/EYU6IVIIC2A6U5U4SXCGLA2C4O/action/replication_record"}},"created_at":"2026-06-02T01:04:09.265809+00:00","updated_at":"2026-06-02T01:04:09.265809+00:00"}