{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:77PMSU4TVKWYSFDHXSVTOI6A6W","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":"d801b8e83f06b9f49d6019d7e03239f5ac9aceeae3bbf9abcea3cf30c073e3e6","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.acc-ph","submitted_at":"2022-10-08T12:07:41Z","title_canon_sha256":"c37376178fb298ef5907faaffe0f51c7ef391a79915f9a68dff8a5818d2d3bb1"},"schema_version":"1.0","source":{"id":"2210.04005","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2210.04005","created_at":"2026-07-05T05:13:57Z"},{"alias_kind":"arxiv_version","alias_value":"2210.04005v2","created_at":"2026-07-05T05:13:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2210.04005","created_at":"2026-07-05T05:13:57Z"},{"alias_kind":"pith_short_12","alias_value":"77PMSU4TVKWY","created_at":"2026-07-05T05:13:57Z"},{"alias_kind":"pith_short_16","alias_value":"77PMSU4TVKWYSFDH","created_at":"2026-07-05T05:13:57Z"},{"alias_kind":"pith_short_8","alias_value":"77PMSU4T","created_at":"2026-07-05T05:13:57Z"}],"graph_snapshots":[{"event_id":"sha256:491706beff32ec405e954e421b24e055fc8ac5828642fac553a0e3f7c2962065","target":"graph","created_at":"2026-07-05T05:13:57Z","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/2210.04005/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"LCLS-II is currently in its commissioning phase at SLAC. It is an X-ray FEL driven by a CW superconducting LINAC. The beam injector plays a crucial role in the overall performance of the accelerator, and is critical to the final electron beam performance parameters. The LCLS-II injector comprises of a 185.7 MHz VHF copper gun cavity, and a 1.3 GHz two-cell L-band copper buncher cavity. The FPGA-based controller employs feedback and Self-Excited Loop logic in order to regulate the cavity fields. It also features several other functionalities, such as live detune computation, active frequency tr","authors_text":"Andrew Benwell, Carlos Serrano, Christos Bakalis, Daniele Filippetto, Daron Chabot, Gang Huang, John Dusatko, Lawrence Doolittle, Sergio Paiagua","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.acc-ph","submitted_at":"2022-10-08T12:07:41Z","title":"The LCLS-II Gun & Buncher LLRF Controller Upgrade"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2210.04005","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:e84f4255cae83c2c948a708cc23f707a930a946393005343b9e0317960590796","target":"record","created_at":"2026-07-05T05:13:57Z","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":"d801b8e83f06b9f49d6019d7e03239f5ac9aceeae3bbf9abcea3cf30c073e3e6","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.acc-ph","submitted_at":"2022-10-08T12:07:41Z","title_canon_sha256":"c37376178fb298ef5907faaffe0f51c7ef391a79915f9a68dff8a5818d2d3bb1"},"schema_version":"1.0","source":{"id":"2210.04005","kind":"arxiv","version":2}},"canonical_sha256":"ffdec95393aaad891467bcab3723c0f5b051d89db2598eac3d5dce914597c17a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ffdec95393aaad891467bcab3723c0f5b051d89db2598eac3d5dce914597c17a","first_computed_at":"2026-07-05T05:13:57.514620Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:13:57.514620Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Nvt01VU5YHVOSoJVTxKUgMl930GPyTBvyoBMXMjKjKySmGp7mMQWOsTuBbG31NvyUjrwwVeVLvsNYKUyx0BuDg==","signature_status":"signed_v1","signed_at":"2026-07-05T05:13:57.515211Z","signed_message":"canonical_sha256_bytes"},"source_id":"2210.04005","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e84f4255cae83c2c948a708cc23f707a930a946393005343b9e0317960590796","sha256:491706beff32ec405e954e421b24e055fc8ac5828642fac553a0e3f7c2962065"],"state_sha256":"c19393278a3d877659e489fdc858114fc193c0712c6d98b298b968b30ecfd186"}