{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:K26S6XVOATN64I3A63XBCSSAQL","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":"17062f140ea6ceb16bb20f6c3318dd800054dda9a43a0d4a1df0b2e7b68a6bfc","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.acc-ph","submitted_at":"2025-01-22T13:52:29Z","title_canon_sha256":"1cdca763a51e8f56f2c4c22390c051ebf7a1fdf2e2c452bbeeb68d569e995491"},"schema_version":"1.0","source":{"id":"2501.12885","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2501.12885","created_at":"2026-07-05T10:04:00Z"},{"alias_kind":"arxiv_version","alias_value":"2501.12885v1","created_at":"2026-07-05T10:04:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2501.12885","created_at":"2026-07-05T10:04:00Z"},{"alias_kind":"pith_short_12","alias_value":"K26S6XVOATN6","created_at":"2026-07-05T10:04:00Z"},{"alias_kind":"pith_short_16","alias_value":"K26S6XVOATN64I3A","created_at":"2026-07-05T10:04:00Z"},{"alias_kind":"pith_short_8","alias_value":"K26S6XVO","created_at":"2026-07-05T10:04:00Z"}],"graph_snapshots":[{"event_id":"sha256:15590f387acaf04b19995f95edd2ae9f79cbade8259c6b4ebd802788d9c1f217","target":"graph","created_at":"2026-07-05T10:04:00Z","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/2501.12885/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We describe an infrared free electron laser (FEL), proposed as a part of a user facility that also incorporates synchrotron-radiation beamlines for the PETRA IV. The FEL itself addresses the needs of the chemical sciences community for a high-brightness, tunable source covering a broad region of the infrared spectrum - from 5 to 100 mkm. The user facility will allow, for the first time, the integrated and simultaneous use of dedicated infrared FEL and synchrotron-radiation beamlines for pump-probe experiments that will focus on gaining a rigorous molecular-level understanding of combustion and","authors_text":"Evgeny Saldin","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.acc-ph","submitted_at":"2025-01-22T13:52:29Z","title":"Concept of an Infrared FEL for the Chemical Dynamics Research Laboratory at PETRA IV"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2501.12885","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:f0f6af49d77c07d17804d62571c3725a7896b87291dc1794229a4ffe214b99b2","target":"record","created_at":"2026-07-05T10:04:00Z","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":"17062f140ea6ceb16bb20f6c3318dd800054dda9a43a0d4a1df0b2e7b68a6bfc","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.acc-ph","submitted_at":"2025-01-22T13:52:29Z","title_canon_sha256":"1cdca763a51e8f56f2c4c22390c051ebf7a1fdf2e2c452bbeeb68d569e995491"},"schema_version":"1.0","source":{"id":"2501.12885","kind":"arxiv","version":1}},"canonical_sha256":"56bd2f5eae04dbee2360f6ee114a4082d084046090e42db1ceebb6836770d539","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"56bd2f5eae04dbee2360f6ee114a4082d084046090e42db1ceebb6836770d539","first_computed_at":"2026-07-05T10:04:00.060286Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:04:00.060286Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"RQpV2AeZwSZ/22AE0oQGD4QOa3oqk9yJeThEi9Xlk6tIoo6pPutRumXDG+LCymfW/MNgpoRv03N18mpgradUDw==","signature_status":"signed_v1","signed_at":"2026-07-05T10:04:00.060721Z","signed_message":"canonical_sha256_bytes"},"source_id":"2501.12885","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f0f6af49d77c07d17804d62571c3725a7896b87291dc1794229a4ffe214b99b2","sha256:15590f387acaf04b19995f95edd2ae9f79cbade8259c6b4ebd802788d9c1f217"],"state_sha256":"11712184b148d2f1b36b0e57b019137091280c6aede31038002697c01fb151a0"}