{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:B2R7CFPHURSJKWEVJHAE6K7FFV","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":"7c3b6261c54a67d81b6df9b537fd571702986eea39a0c8a03b761346cd63bc40","cross_cats_sorted":["physics.plasm-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2020-07-10T09:05:26Z","title_canon_sha256":"28698571b18631d71b3382b89f67139eeecadd8fb0f0c31f4240b42546a3280a"},"schema_version":"1.0","source":{"id":"2007.05258","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2007.05258","created_at":"2026-07-05T02:09:27Z"},{"alias_kind":"arxiv_version","alias_value":"2007.05258v1","created_at":"2026-07-05T02:09:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2007.05258","created_at":"2026-07-05T02:09:27Z"},{"alias_kind":"pith_short_12","alias_value":"B2R7CFPHURSJ","created_at":"2026-07-05T02:09:27Z"},{"alias_kind":"pith_short_16","alias_value":"B2R7CFPHURSJKWEV","created_at":"2026-07-05T02:09:27Z"},{"alias_kind":"pith_short_8","alias_value":"B2R7CFPH","created_at":"2026-07-05T02:09:27Z"}],"graph_snapshots":[{"event_id":"sha256:049175d367c88f3ce0ed3a72f10b15d8d70c01987c82db817f909c8b7479098f","target":"graph","created_at":"2026-07-05T02:09:27Z","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/2007.05258/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Accelerating particles to high energies with a high-gradient wakefield accelerator may require use of multiple stages. Coupling beams from one stage to another can be difficult due to high divergence and non-negligible energy spreads. We review the challenges, technical requirements and currently proposed methods for solving the staging problem.","authors_text":"C. A. Lindstr{\\o}m","cross_cats":["physics.plasm-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2020-07-10T09:05:26Z","title":"Staging of High-Gradient Wakefield Accelerators"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2007.05258","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":"sha256:78dfc01707721eb94f575598e07f3826f97d333bdb58b563f72f30defdfd75cf","target":"record","created_at":"2026-07-05T02:09:27Z","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":"7c3b6261c54a67d81b6df9b537fd571702986eea39a0c8a03b761346cd63bc40","cross_cats_sorted":["physics.plasm-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2020-07-10T09:05:26Z","title_canon_sha256":"28698571b18631d71b3382b89f67139eeecadd8fb0f0c31f4240b42546a3280a"},"schema_version":"1.0","source":{"id":"2007.05258","kind":"arxiv","version":1}},"canonical_sha256":"0ea3f115e7a46495589549c04f2be52d4124378951bb3bce2336f897e6be2192","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0ea3f115e7a46495589549c04f2be52d4124378951bb3bce2336f897e6be2192","first_computed_at":"2026-07-05T02:09:27.834421Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:09:27.834421Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"8Bd0JIY5lxeQ8cwKPAoD/RTfHLy8/kZ6fsrwMCma5GaaEnbX87M53dQBMMBJaWosxcyBlKihl4/emzTQUrkGDA==","signature_status":"signed_v1","signed_at":"2026-07-05T02:09:27.834817Z","signed_message":"canonical_sha256_bytes"},"source_id":"2007.05258","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:78dfc01707721eb94f575598e07f3826f97d333bdb58b563f72f30defdfd75cf","sha256:049175d367c88f3ce0ed3a72f10b15d8d70c01987c82db817f909c8b7479098f"],"state_sha256":"a2351f8f85942105e2ed45dadc6c532dfcc63d3f42dd81bf1f1a7ccd65b7d498"}