{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:47KYZN7L5SMJPGZPM7NOD7J776","short_pith_number":"pith:47KYZN7L","canonical_record":{"source":{"id":"1904.11192","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2019-04-25T07:49:29Z","cross_cats_sorted":["physics.plasm-ph"],"title_canon_sha256":"65fab906a4367bee543a6e650cfd9ffaa51ccdac272d44f82931b864873cb172","abstract_canon_sha256":"3bbc61efbb291c463bf0cd3ede44d93733cbaa8b552a1965d915f76db66f285d"},"schema_version":"1.0"},"canonical_sha256":"e7d58cb7ebec98979b2f67dae1fd3fff902b757006fc249c8ebf03c7970a0cf6","source":{"kind":"arxiv","id":"1904.11192","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.11192","created_at":"2026-05-17T23:42:19Z"},{"alias_kind":"arxiv_version","alias_value":"1904.11192v1","created_at":"2026-05-17T23:42:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.11192","created_at":"2026-05-17T23:42:19Z"},{"alias_kind":"pith_short_12","alias_value":"47KYZN7L5SMJ","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_16","alias_value":"47KYZN7L5SMJPGZP","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_8","alias_value":"47KYZN7L","created_at":"2026-05-18T12:33:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:47KYZN7L5SMJPGZPM7NOD7J776","target":"record","payload":{"canonical_record":{"source":{"id":"1904.11192","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2019-04-25T07:49:29Z","cross_cats_sorted":["physics.plasm-ph"],"title_canon_sha256":"65fab906a4367bee543a6e650cfd9ffaa51ccdac272d44f82931b864873cb172","abstract_canon_sha256":"3bbc61efbb291c463bf0cd3ede44d93733cbaa8b552a1965d915f76db66f285d"},"schema_version":"1.0"},"canonical_sha256":"e7d58cb7ebec98979b2f67dae1fd3fff902b757006fc249c8ebf03c7970a0cf6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:42:19.642983Z","signature_b64":"ymmTi8/ZMfECZmaQCCVA41rabPMTDj/Ag0wCYRxUkyrbWIfrA8WfXT1K6U+rRh7pVnLar+rSGvg1MWzevRYjCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e7d58cb7ebec98979b2f67dae1fd3fff902b757006fc249c8ebf03c7970a0cf6","last_reissued_at":"2026-05-17T23:42:19.642559Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:42:19.642559Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1904.11192","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:42:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"821kehwGEqYSgDJwFkei/MWR6oRfhq6/QmOMil8fbb3/g9+xh+imppaJKqGdn1Vd6vsACtlvhyTRIxvlMqvyCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T22:01:02.240267Z"},"content_sha256":"fd6edcd554638d174ee5cb200b68543293654bce8f0feedbccb150a4a6308de4","schema_version":"1.0","event_id":"sha256:fd6edcd554638d174ee5cb200b68543293654bce8f0feedbccb150a4a6308de4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:47KYZN7L5SMJPGZPM7NOD7J776","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Phase space dynamics of a plasma wakefield dechirper for energy spread reduction","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.plasm-ph"],"primary_cat":"physics.acc-ph","authors_text":"B. Peng, C. H. Pai, C. Joshi, C. J. Zhang, J. F. Hua, J. Zhang, S. Liu, W. B. Mori, W. Lu, X. N. Ning, Y. C. Du, Y. Fang, Y. P. Wu, Z. Nie, Z. Zhou","submitted_at":"2019-04-25T07:49:29Z","abstract_excerpt":"Plasma-based accelerators have made impressive progress in recent years. However, the beam energy spread obtained in these accelerators is still at ~ 1 % level, nearly one order of magnitude larger than what is needed for challenging applications like coherent light sources or colliders. In plasma accelerators, the beam energy spread is mainly dominated by its energy chirp (longitudinally correlated energy spread). Here we demonstrate that when an initially chirped electron beam from a linac with a proper current profile is sent through a low-density plasma structure, the self wake of the beam"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.11192","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:42:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AeLGUY4Vz4nhQ1pbIN6wHjBs7LlZdC4rh9cyVbtH5kEkDT0mW2M9kyYpV4jMTWiU996lTGpKkcRMK49qMyj2BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T22:01:02.240974Z"},"content_sha256":"50f39ef47f2adb24823535e0102ffccf60de19c9ced0bd8be425303d017f3e9b","schema_version":"1.0","event_id":"sha256:50f39ef47f2adb24823535e0102ffccf60de19c9ced0bd8be425303d017f3e9b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/47KYZN7L5SMJPGZPM7NOD7J776/bundle.json","state_url":"https://pith.science/pith/47KYZN7L5SMJPGZPM7NOD7J776/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/47KYZN7L5SMJPGZPM7NOD7J776/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-31T22:01:02Z","links":{"resolver":"https://pith.science/pith/47KYZN7L5SMJPGZPM7NOD7J776","bundle":"https://pith.science/pith/47KYZN7L5SMJPGZPM7NOD7J776/bundle.json","state":"https://pith.science/pith/47KYZN7L5SMJPGZPM7NOD7J776/state.json","well_known_bundle":"https://pith.science/.well-known/pith/47KYZN7L5SMJPGZPM7NOD7J776/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:47KYZN7L5SMJPGZPM7NOD7J776","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":"3bbc61efbb291c463bf0cd3ede44d93733cbaa8b552a1965d915f76db66f285d","cross_cats_sorted":["physics.plasm-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2019-04-25T07:49:29Z","title_canon_sha256":"65fab906a4367bee543a6e650cfd9ffaa51ccdac272d44f82931b864873cb172"},"schema_version":"1.0","source":{"id":"1904.11192","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.11192","created_at":"2026-05-17T23:42:19Z"},{"alias_kind":"arxiv_version","alias_value":"1904.11192v1","created_at":"2026-05-17T23:42:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.11192","created_at":"2026-05-17T23:42:19Z"},{"alias_kind":"pith_short_12","alias_value":"47KYZN7L5SMJ","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_16","alias_value":"47KYZN7L5SMJPGZP","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_8","alias_value":"47KYZN7L","created_at":"2026-05-18T12:33:10Z"}],"graph_snapshots":[{"event_id":"sha256:50f39ef47f2adb24823535e0102ffccf60de19c9ced0bd8be425303d017f3e9b","target":"graph","created_at":"2026-05-17T23:42:19Z","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":"Plasma-based accelerators have made impressive progress in recent years. However, the beam energy spread obtained in these accelerators is still at ~ 1 % level, nearly one order of magnitude larger than what is needed for challenging applications like coherent light sources or colliders. In plasma accelerators, the beam energy spread is mainly dominated by its energy chirp (longitudinally correlated energy spread). Here we demonstrate that when an initially chirped electron beam from a linac with a proper current profile is sent through a low-density plasma structure, the self wake of the beam","authors_text":"B. Peng, C. H. Pai, C. Joshi, C. J. Zhang, J. F. Hua, J. Zhang, S. Liu, W. B. Mori, W. Lu, X. N. Ning, Y. C. Du, Y. Fang, Y. P. Wu, Z. Nie, Z. Zhou","cross_cats":["physics.plasm-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2019-04-25T07:49:29Z","title":"Phase space dynamics of a plasma wakefield dechirper for energy spread reduction"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.11192","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:fd6edcd554638d174ee5cb200b68543293654bce8f0feedbccb150a4a6308de4","target":"record","created_at":"2026-05-17T23:42:19Z","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":"3bbc61efbb291c463bf0cd3ede44d93733cbaa8b552a1965d915f76db66f285d","cross_cats_sorted":["physics.plasm-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2019-04-25T07:49:29Z","title_canon_sha256":"65fab906a4367bee543a6e650cfd9ffaa51ccdac272d44f82931b864873cb172"},"schema_version":"1.0","source":{"id":"1904.11192","kind":"arxiv","version":1}},"canonical_sha256":"e7d58cb7ebec98979b2f67dae1fd3fff902b757006fc249c8ebf03c7970a0cf6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e7d58cb7ebec98979b2f67dae1fd3fff902b757006fc249c8ebf03c7970a0cf6","first_computed_at":"2026-05-17T23:42:19.642559Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:42:19.642559Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ymmTi8/ZMfECZmaQCCVA41rabPMTDj/Ag0wCYRxUkyrbWIfrA8WfXT1K6U+rRh7pVnLar+rSGvg1MWzevRYjCQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:42:19.642983Z","signed_message":"canonical_sha256_bytes"},"source_id":"1904.11192","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fd6edcd554638d174ee5cb200b68543293654bce8f0feedbccb150a4a6308de4","sha256:50f39ef47f2adb24823535e0102ffccf60de19c9ced0bd8be425303d017f3e9b"],"state_sha256":"4ad41043d73784539b0ccbac16a158d2331728e5286af9a1333307329e73e045"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VwnwH40qZWX9QFO3SCfBaVWJPOp9dQf5szVs/+FtQ0lrJa9Xx8ArQAgBSxLX3lunaV79raLPxDOn/OE7UBuqAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T22:01:02.245811Z","bundle_sha256":"b6675f9150868b46337fa6340f8f02d790851f02dff4b5f73a445853c731f09d"}}