{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:6BZXKCQRKT3D66D3333FEOLVEK","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":"1bfa5276884dd994f25653fc78d4148c4d9c73f72aa8834e1636809281f1c900","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2015-05-22T20:42:32Z","title_canon_sha256":"4bbb352e30196805f39b92bf0e6ac44190ce408721e2ccd42a84af8beaf831f2"},"schema_version":"1.0","source":{"id":"1505.06218","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.06218","created_at":"2026-05-18T01:31:38Z"},{"alias_kind":"arxiv_version","alias_value":"1505.06218v1","created_at":"2026-05-18T01:31:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.06218","created_at":"2026-05-18T01:31:38Z"},{"alias_kind":"pith_short_12","alias_value":"6BZXKCQRKT3D","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_16","alias_value":"6BZXKCQRKT3D66D3","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_8","alias_value":"6BZXKCQR","created_at":"2026-05-18T12:29:07Z"}],"graph_snapshots":[{"event_id":"sha256:c7e75f90b78312b0de17b262bcbe119ea4dbd530975b9a82073c86f09aa07265","target":"graph","created_at":"2026-05-18T01:31:38Z","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":"Collinear high-gradient ${\\cal O} (GV/m)$ beam-driven wakefield methods for charged-particle acceleration could be critical to the realization of compact, cost-efficient, accelerators, e.g., in support of TeV-scale lepton colliders or multiple-user free-electron laser facilities. To make these options viable, the high accelerating fields need to be complemented with large transformer ratios $>2$, a parameter characterizing the efficiency of the energy transfer between a wakefield-exciting \"drive\" bunch to an accelerated \"witness\" bunch. While several potential current distributions have been d","authors_text":"Francois Lemery, Philippe Piot","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2015-05-22T20:42:32Z","title":"Tailored electron bunches with smooth current profiles for enhanced transformer ratios in beam-driven acceleration"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.06218","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":"sha256:73bf8ce0b6725820292815a3fb4de73881b1c73b84b243ee991bca942df30605","target":"record","created_at":"2026-05-18T01:31:38Z","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":"1bfa5276884dd994f25653fc78d4148c4d9c73f72aa8834e1636809281f1c900","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2015-05-22T20:42:32Z","title_canon_sha256":"4bbb352e30196805f39b92bf0e6ac44190ce408721e2ccd42a84af8beaf831f2"},"schema_version":"1.0","source":{"id":"1505.06218","kind":"arxiv","version":1}},"canonical_sha256":"f073750a1154f63f787bdef652397522a22a186de17237cadcea7b83df528acc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f073750a1154f63f787bdef652397522a22a186de17237cadcea7b83df528acc","first_computed_at":"2026-05-18T01:31:38.886562Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:31:38.886562Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"PGFcNw9Vu5vUMNND7JOdS652eEwdX619o/AsfuTrrH0rcSdSNA2hxK8c4BGcz15AaHiK2VH2vAv3JQ6grthMAA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:31:38.887235Z","signed_message":"canonical_sha256_bytes"},"source_id":"1505.06218","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:73bf8ce0b6725820292815a3fb4de73881b1c73b84b243ee991bca942df30605","sha256:c7e75f90b78312b0de17b262bcbe119ea4dbd530975b9a82073c86f09aa07265"],"state_sha256":"1c70c185501b1292ba7019d45ff5790c436105bd7136778f900dc13d7cc8d724"}