{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:FSB7OWUGOQEOGFWQ5D5AE6MFLU","short_pith_number":"pith:FSB7OWUG","canonical_record":{"source":{"id":"1806.07318","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.acc-ph","submitted_at":"2018-06-19T15:51:23Z","cross_cats_sorted":[],"title_canon_sha256":"c7d0284f996946f6c82e406bf003a64b2c1ade20fd985e5f0b7b1281eb633de6","abstract_canon_sha256":"f8eb3816895a5320ca3f556174b1f466cd2181829cf2e9b5b397640b2a66c4d3"},"schema_version":"1.0"},"canonical_sha256":"2c83f75a867408e316d0e8fa0279855d06062c3d0659d1b5702326aa2f1a7096","source":{"kind":"arxiv","id":"1806.07318","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1806.07318","created_at":"2026-07-05T00:03:29Z"},{"alias_kind":"arxiv_version","alias_value":"1806.07318v2","created_at":"2026-07-05T00:03:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1806.07318","created_at":"2026-07-05T00:03:29Z"},{"alias_kind":"pith_short_12","alias_value":"FSB7OWUGOQEO","created_at":"2026-07-05T00:03:29Z"},{"alias_kind":"pith_short_16","alias_value":"FSB7OWUGOQEOGFWQ","created_at":"2026-07-05T00:03:29Z"},{"alias_kind":"pith_short_8","alias_value":"FSB7OWUG","created_at":"2026-07-05T00:03:29Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:FSB7OWUGOQEOGFWQ5D5AE6MFLU","target":"record","payload":{"canonical_record":{"source":{"id":"1806.07318","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.acc-ph","submitted_at":"2018-06-19T15:51:23Z","cross_cats_sorted":[],"title_canon_sha256":"c7d0284f996946f6c82e406bf003a64b2c1ade20fd985e5f0b7b1281eb633de6","abstract_canon_sha256":"f8eb3816895a5320ca3f556174b1f466cd2181829cf2e9b5b397640b2a66c4d3"},"schema_version":"1.0"},"canonical_sha256":"2c83f75a867408e316d0e8fa0279855d06062c3d0659d1b5702326aa2f1a7096","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:03:29.687168Z","signature_b64":"xPLAolxEUOvN7EwEmXIfZGeEQ5QdyyWmGEO/9jxv1NaIM0qVQBF1RP2X/SuCQt3aNlpg7mjoxCZfm76oenwTDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2c83f75a867408e316d0e8fa0279855d06062c3d0659d1b5702326aa2f1a7096","last_reissued_at":"2026-07-05T00:03:29.686687Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:03:29.686687Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1806.07318","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":"2026-07-05T00:03:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9SYt4c/aePuJJxTwaOIimGO95xqeRynb6OMryV1bICP/PC/ZbYYj/lbnYNoshbJ9ipOkjTsrj7M+N3aU7a8IAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-16T10:52:55.765350Z"},"content_sha256":"59eb9b7ee7712cd6a857a6267d3551c7ad6f823ed938b2b2b76e59014210dd06","schema_version":"1.0","event_id":"sha256:59eb9b7ee7712cd6a857a6267d3551c7ad6f823ed938b2b2b76e59014210dd06"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:FSB7OWUGOQEOGFWQ5D5AE6MFLU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Emittance reduction with variable bending magnet strengths: Analytical optics considerations and application to the Compact Linear Collider damping ring design","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.acc-ph","authors_text":"F. Antoniou, S. Papadopoulou, Y. Papaphilippou","submitted_at":"2018-06-19T15:51:23Z","abstract_excerpt":"One of the main challenges of the lattice design of synchrotrons, used as light sources or damping rings (DRs), is the minimization of the emittance. The optimal lattice configurations for achieving the absolute minimum emittance are the theoretical minimum emittance (TME) cells. This paper elaborates the optimization strategy in order to further reduce the betatron emittance of a TME cell by using dipoles whose magnetic field varies longitudinally. Based on analytical results, the magnet design for the fabrication of variable bends with the optimal characteristics is discussed. In order to ha"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1806.07318","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1806.07318/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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T00:03:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VC2deXS2gY89Ch+URbnYINYLJlbBXjo2QdXnfi7jQ2eIzxAD3XqZy0e/0b9WDnCVcSsn+dj0z0KfPoMBd4bTAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-16T10:52:55.765742Z"},"content_sha256":"701c4a6a1faaf313c4de21d8d173491af1a6257a7c0de8acce506f32c1c50656","schema_version":"1.0","event_id":"sha256:701c4a6a1faaf313c4de21d8d173491af1a6257a7c0de8acce506f32c1c50656"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FSB7OWUGOQEOGFWQ5D5AE6MFLU/bundle.json","state_url":"https://pith.science/pith/FSB7OWUGOQEOGFWQ5D5AE6MFLU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FSB7OWUGOQEOGFWQ5D5AE6MFLU/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":"2026-07-16T10:52:55Z","links":{"resolver":"https://pith.science/pith/FSB7OWUGOQEOGFWQ5D5AE6MFLU","bundle":"https://pith.science/pith/FSB7OWUGOQEOGFWQ5D5AE6MFLU/bundle.json","state":"https://pith.science/pith/FSB7OWUGOQEOGFWQ5D5AE6MFLU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FSB7OWUGOQEOGFWQ5D5AE6MFLU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:FSB7OWUGOQEOGFWQ5D5AE6MFLU","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":"f8eb3816895a5320ca3f556174b1f466cd2181829cf2e9b5b397640b2a66c4d3","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.acc-ph","submitted_at":"2018-06-19T15:51:23Z","title_canon_sha256":"c7d0284f996946f6c82e406bf003a64b2c1ade20fd985e5f0b7b1281eb633de6"},"schema_version":"1.0","source":{"id":"1806.07318","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1806.07318","created_at":"2026-07-05T00:03:29Z"},{"alias_kind":"arxiv_version","alias_value":"1806.07318v2","created_at":"2026-07-05T00:03:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1806.07318","created_at":"2026-07-05T00:03:29Z"},{"alias_kind":"pith_short_12","alias_value":"FSB7OWUGOQEO","created_at":"2026-07-05T00:03:29Z"},{"alias_kind":"pith_short_16","alias_value":"FSB7OWUGOQEOGFWQ","created_at":"2026-07-05T00:03:29Z"},{"alias_kind":"pith_short_8","alias_value":"FSB7OWUG","created_at":"2026-07-05T00:03:29Z"}],"graph_snapshots":[{"event_id":"sha256:701c4a6a1faaf313c4de21d8d173491af1a6257a7c0de8acce506f32c1c50656","target":"graph","created_at":"2026-07-05T00:03:29Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/1806.07318/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"One of the main challenges of the lattice design of synchrotrons, used as light sources or damping rings (DRs), is the minimization of the emittance. The optimal lattice configurations for achieving the absolute minimum emittance are the theoretical minimum emittance (TME) cells. This paper elaborates the optimization strategy in order to further reduce the betatron emittance of a TME cell by using dipoles whose magnetic field varies longitudinally. Based on analytical results, the magnet design for the fabrication of variable bends with the optimal characteristics is discussed. In order to ha","authors_text":"F. Antoniou, S. Papadopoulou, Y. Papaphilippou","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.acc-ph","submitted_at":"2018-06-19T15:51:23Z","title":"Emittance reduction with variable bending magnet strengths: Analytical optics considerations and application to the Compact Linear Collider damping ring design"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1806.07318","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":"sha256:59eb9b7ee7712cd6a857a6267d3551c7ad6f823ed938b2b2b76e59014210dd06","target":"record","created_at":"2026-07-05T00:03:29Z","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":"f8eb3816895a5320ca3f556174b1f466cd2181829cf2e9b5b397640b2a66c4d3","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.acc-ph","submitted_at":"2018-06-19T15:51:23Z","title_canon_sha256":"c7d0284f996946f6c82e406bf003a64b2c1ade20fd985e5f0b7b1281eb633de6"},"schema_version":"1.0","source":{"id":"1806.07318","kind":"arxiv","version":2}},"canonical_sha256":"2c83f75a867408e316d0e8fa0279855d06062c3d0659d1b5702326aa2f1a7096","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2c83f75a867408e316d0e8fa0279855d06062c3d0659d1b5702326aa2f1a7096","first_computed_at":"2026-07-05T00:03:29.686687Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:03:29.686687Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xPLAolxEUOvN7EwEmXIfZGeEQ5QdyyWmGEO/9jxv1NaIM0qVQBF1RP2X/SuCQt3aNlpg7mjoxCZfm76oenwTDg==","signature_status":"signed_v1","signed_at":"2026-07-05T00:03:29.687168Z","signed_message":"canonical_sha256_bytes"},"source_id":"1806.07318","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:59eb9b7ee7712cd6a857a6267d3551c7ad6f823ed938b2b2b76e59014210dd06","sha256:701c4a6a1faaf313c4de21d8d173491af1a6257a7c0de8acce506f32c1c50656"],"state_sha256":"d9b5986bca34978278b102961cd5614596f6f5de9f455a6de406e33d72d564e7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ph+EhS/EAC5FEx44ia2FLDgQPWdEjs3fC7zXsD4QWBaROUGlNUoFpa2heAbaoBs50fD9D2OeO4Mj0BO/WsuOCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-16T10:52:55.767924Z","bundle_sha256":"682d2c895011b37d06592ad16ab47bcabff959f3cda2738f7bae427d2143cc99"}}