{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:3C3BCXRC53N6GVVF7MSNTYKDA4","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":"6f1e04e97b452badb3a0e66d71ca03e84d0c1a8bc668ef62147a5b927dd8c6e5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2016-05-09T14:06:45Z","title_canon_sha256":"6b65748384ecac8806922c645d3bc6779a7dc0ccc5eade77b6641fdf747a3fab"},"schema_version":"1.0","source":{"id":"1605.02594","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1605.02594","created_at":"2026-05-18T01:15:16Z"},{"alias_kind":"arxiv_version","alias_value":"1605.02594v1","created_at":"2026-05-18T01:15:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1605.02594","created_at":"2026-05-18T01:15:16Z"},{"alias_kind":"pith_short_12","alias_value":"3C3BCXRC53N6","created_at":"2026-05-18T12:29:55Z"},{"alias_kind":"pith_short_16","alias_value":"3C3BCXRC53N6GVVF","created_at":"2026-05-18T12:29:55Z"},{"alias_kind":"pith_short_8","alias_value":"3C3BCXRC","created_at":"2026-05-18T12:29:55Z"}],"graph_snapshots":[{"event_id":"sha256:27b342b46036e7781e16ac2c8da1df432cb0f73ef54b15dc426a1f280660222f","target":"graph","created_at":"2026-05-18T01:15:16Z","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":"Application of electron cooling at ion energies above a few GeV has been limited due to reduction of electron cooling efficiency with energy and difficulty in producing and accelerating a high-current high-quality electron beam. A high-current storage-ring electron cooler offers a solution to both of these problems by maintaining high cooling beam quality through naturally-occurring synchrotron radiation damping of the electron beam. However, the range of ion energies where storage-ring electron cooling can be used has been limited by low electron beam damping rates at low ion energies and hig","authors_text":"D. Douglas, F. Lin, G. Krafft, J. Guo, R.P. Johnson, V.S. Morozov, Y.S. Derbenev, Y. Zhang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2016-05-09T14:06:45Z","title":"Storage-ring Electron Cooler for Relativistic Ion Beams"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1605.02594","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":"sha256:35766c8fa07abb8e332d3d77bc9328d5cd94be5942f0b61f73b3095d5e7b6005","target":"record","created_at":"2026-05-18T01:15:16Z","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":"6f1e04e97b452badb3a0e66d71ca03e84d0c1a8bc668ef62147a5b927dd8c6e5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2016-05-09T14:06:45Z","title_canon_sha256":"6b65748384ecac8806922c645d3bc6779a7dc0ccc5eade77b6641fdf747a3fab"},"schema_version":"1.0","source":{"id":"1605.02594","kind":"arxiv","version":1}},"canonical_sha256":"d8b6115e22eedbe356a5fb24d9e1430717a769927b009ac192deb1a23e305a33","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d8b6115e22eedbe356a5fb24d9e1430717a769927b009ac192deb1a23e305a33","first_computed_at":"2026-05-18T01:15:16.063194Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:15:16.063194Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qd/Vn1vHPx25GrdCXmvDfQGfKvnG47te6CliKYbQQ0eq6FAcDK54F/lxZnA98fzC6NzKt1EMXsne0Pri//1mAw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:15:16.063931Z","signed_message":"canonical_sha256_bytes"},"source_id":"1605.02594","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:35766c8fa07abb8e332d3d77bc9328d5cd94be5942f0b61f73b3095d5e7b6005","sha256:27b342b46036e7781e16ac2c8da1df432cb0f73ef54b15dc426a1f280660222f"],"state_sha256":"3289395407ef1d677e4c0818a983773cfff21ad29157eb9b8539b7b134121980"}