{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:2246DKQQG4LB6UTKPADBVL3KOU","short_pith_number":"pith:2246DKQQ","canonical_record":{"source":{"id":"1704.00798","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2017-04-03T20:29:40Z","cross_cats_sorted":[],"title_canon_sha256":"2c208f4b5e81b8ff0e33b55b75fef13c58509235d1df249d7701d60e43ef35bc","abstract_canon_sha256":"83cd1ee76d17d17e47f5d4eea58e70a9d12acf8aa27d3f69f92c5631227a5a77"},"schema_version":"1.0"},"canonical_sha256":"d6b9e1aa1037161f526a78061aaf6a7507cbdf302c742a256dcaff7576edfb08","source":{"kind":"arxiv","id":"1704.00798","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1704.00798","created_at":"2026-05-18T00:38:55Z"},{"alias_kind":"arxiv_version","alias_value":"1704.00798v2","created_at":"2026-05-18T00:38:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1704.00798","created_at":"2026-05-18T00:38:55Z"},{"alias_kind":"pith_short_12","alias_value":"2246DKQQG4LB","created_at":"2026-05-18T12:30:55Z"},{"alias_kind":"pith_short_16","alias_value":"2246DKQQG4LB6UTK","created_at":"2026-05-18T12:30:55Z"},{"alias_kind":"pith_short_8","alias_value":"2246DKQQ","created_at":"2026-05-18T12:30:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:2246DKQQG4LB6UTKPADBVL3KOU","target":"record","payload":{"canonical_record":{"source":{"id":"1704.00798","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2017-04-03T20:29:40Z","cross_cats_sorted":[],"title_canon_sha256":"2c208f4b5e81b8ff0e33b55b75fef13c58509235d1df249d7701d60e43ef35bc","abstract_canon_sha256":"83cd1ee76d17d17e47f5d4eea58e70a9d12acf8aa27d3f69f92c5631227a5a77"},"schema_version":"1.0"},"canonical_sha256":"d6b9e1aa1037161f526a78061aaf6a7507cbdf302c742a256dcaff7576edfb08","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:38:55.919643Z","signature_b64":"imZzHDgwi/jZiNvUzVN0jvNABGjeqnZF3M7Vg6So74DHghkIsYtz3/WUb42QV1+tItJiO0/oBdf8NXAMTQz3Bg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d6b9e1aa1037161f526a78061aaf6a7507cbdf302c742a256dcaff7576edfb08","last_reissued_at":"2026-05-18T00:38:55.918993Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:38:55.918993Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1704.00798","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:38:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6nrW8oILj47sBaf8sec62b4PRcTLJNcWZsWTrPaRzcUjHDGp/mwnzt7knQM3r0Q5l/SpPq8YG3rNEqUb7h1eDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T16:12:54.018751Z"},"content_sha256":"64cab319532d9b78eb00d44f589718a799563664407fde7ff45bc55ffd03f690","schema_version":"1.0","event_id":"sha256:64cab319532d9b78eb00d44f589718a799563664407fde7ff45bc55ffd03f690"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:2246DKQQG4LB6UTKPADBVL3KOU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A FODO racetrack ring design and optimization for nuSTORM","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.acc-ph","authors_text":"Alan Bross, Ao Liu, David Neuffer","submitted_at":"2017-04-03T20:29:40Z","abstract_excerpt":"The goal of nuSTORM is to provide well-defined neutrino beams for precise measurements of neutrino cross-sections and oscillations. The nuSTORM decay ring is a compact racetrack storage ring with a circumference of ~480 m that incorporates large aperture (60 cm diameter) magnets. There are many challenges in the design. In order to incorporate the Orbit Combination Section (OCS), used for injecting the pion beam into the ring, a dispersion suppressor is needed adjacent to the OCS. Concurrently, in order to maximize the number of useful muon decays, strong bending dipoles are needed in the arcs"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.00798","kind":"arxiv","version":2},"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":"2026-05-18T00:38:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JIFhmT8wUtmF16eAq4444kQ8kJkFuxIHh92Thdm8OTQ9xxEXCG2rCvt7eE5JbdOshn7TucwSGJwyRpDq6Mg8CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T16:12:54.019125Z"},"content_sha256":"d75edba1c36a2cad2bb5507953a4b2ad2766553b3bfc1a3d61f6e13588c229be","schema_version":"1.0","event_id":"sha256:d75edba1c36a2cad2bb5507953a4b2ad2766553b3bfc1a3d61f6e13588c229be"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2246DKQQG4LB6UTKPADBVL3KOU/bundle.json","state_url":"https://pith.science/pith/2246DKQQG4LB6UTKPADBVL3KOU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2246DKQQG4LB6UTKPADBVL3KOU/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":"2026-05-29T16:12:54Z","links":{"resolver":"https://pith.science/pith/2246DKQQG4LB6UTKPADBVL3KOU","bundle":"https://pith.science/pith/2246DKQQG4LB6UTKPADBVL3KOU/bundle.json","state":"https://pith.science/pith/2246DKQQG4LB6UTKPADBVL3KOU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2246DKQQG4LB6UTKPADBVL3KOU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:2246DKQQG4LB6UTKPADBVL3KOU","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":"83cd1ee76d17d17e47f5d4eea58e70a9d12acf8aa27d3f69f92c5631227a5a77","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2017-04-03T20:29:40Z","title_canon_sha256":"2c208f4b5e81b8ff0e33b55b75fef13c58509235d1df249d7701d60e43ef35bc"},"schema_version":"1.0","source":{"id":"1704.00798","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1704.00798","created_at":"2026-05-18T00:38:55Z"},{"alias_kind":"arxiv_version","alias_value":"1704.00798v2","created_at":"2026-05-18T00:38:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1704.00798","created_at":"2026-05-18T00:38:55Z"},{"alias_kind":"pith_short_12","alias_value":"2246DKQQG4LB","created_at":"2026-05-18T12:30:55Z"},{"alias_kind":"pith_short_16","alias_value":"2246DKQQG4LB6UTK","created_at":"2026-05-18T12:30:55Z"},{"alias_kind":"pith_short_8","alias_value":"2246DKQQ","created_at":"2026-05-18T12:30:55Z"}],"graph_snapshots":[{"event_id":"sha256:d75edba1c36a2cad2bb5507953a4b2ad2766553b3bfc1a3d61f6e13588c229be","target":"graph","created_at":"2026-05-18T00:38:55Z","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 goal of nuSTORM is to provide well-defined neutrino beams for precise measurements of neutrino cross-sections and oscillations. The nuSTORM decay ring is a compact racetrack storage ring with a circumference of ~480 m that incorporates large aperture (60 cm diameter) magnets. There are many challenges in the design. In order to incorporate the Orbit Combination Section (OCS), used for injecting the pion beam into the ring, a dispersion suppressor is needed adjacent to the OCS. Concurrently, in order to maximize the number of useful muon decays, strong bending dipoles are needed in the arcs","authors_text":"Alan Bross, Ao Liu, David Neuffer","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2017-04-03T20:29:40Z","title":"A FODO racetrack ring design and optimization for nuSTORM"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.00798","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":"sha256:64cab319532d9b78eb00d44f589718a799563664407fde7ff45bc55ffd03f690","target":"record","created_at":"2026-05-18T00:38:55Z","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":"83cd1ee76d17d17e47f5d4eea58e70a9d12acf8aa27d3f69f92c5631227a5a77","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2017-04-03T20:29:40Z","title_canon_sha256":"2c208f4b5e81b8ff0e33b55b75fef13c58509235d1df249d7701d60e43ef35bc"},"schema_version":"1.0","source":{"id":"1704.00798","kind":"arxiv","version":2}},"canonical_sha256":"d6b9e1aa1037161f526a78061aaf6a7507cbdf302c742a256dcaff7576edfb08","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d6b9e1aa1037161f526a78061aaf6a7507cbdf302c742a256dcaff7576edfb08","first_computed_at":"2026-05-18T00:38:55.918993Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:38:55.918993Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"imZzHDgwi/jZiNvUzVN0jvNABGjeqnZF3M7Vg6So74DHghkIsYtz3/WUb42QV1+tItJiO0/oBdf8NXAMTQz3Bg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:38:55.919643Z","signed_message":"canonical_sha256_bytes"},"source_id":"1704.00798","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:64cab319532d9b78eb00d44f589718a799563664407fde7ff45bc55ffd03f690","sha256:d75edba1c36a2cad2bb5507953a4b2ad2766553b3bfc1a3d61f6e13588c229be"],"state_sha256":"70f9b7b09a77bc25052213bb3b13ce7ca3c2955129e554f6951ac042c3fd7378"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3Tnq/FRa/exDw9GthI1DQxogBoYL2T6GKUwdEvtuLl5nT4BwfEZ8v8t1YTqo74uTYVpP6YgqlF4wTLYIa19BDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-29T16:12:54.021376Z","bundle_sha256":"477be8e658b76eab6f2cbf706db9a3fa7e32a4f4cc27f13b767807c987f5683f"}}