{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2024:VKVBGCMXHTHXWRXQWOFUOKZEIF","short_pith_number":"pith:VKVBGCMX","schema_version":"1.0","canonical_sha256":"aaaa1309973ccf7b46f0b38b472b244150284dc770a510c40780c0561de89adb","source":{"kind":"arxiv","id":"2404.06312","version":1},"attestation_state":"computed","paper":{"title":"Compensating slice emittance growth in high brightness photoinjectors using sacrificial charge","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.acc-ph","authors_text":"A. C. Bartnik, A. Fukasawa, G. Lawler, J. B. Rosenzweig, J. M. Maxson, M. Kaemingk, N. Majernik, W. H. Li","submitted_at":"2024-04-09T13:45:59Z","abstract_excerpt":"Achieving maximum electron beam brightness in photoinjectors requires detailed control of the 3D bunch shape and precise tuning of the beam focusing. Even in state-of-the-art designs, slice emittance growth due to nonlinear space charge forces and partial nonlaminarity often remains non-negligible. In this work we introduce a new means to linearize the transverse slice phase space: a sacrificial portion of the bunch's own charge distribution, formed into a wavebroken shock front by highly nonlinear space charge forces within the gun, whose downstream purpose is to dynamically linearize the des"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2404.06312","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.acc-ph","submitted_at":"2024-04-09T13:45:59Z","cross_cats_sorted":[],"title_canon_sha256":"c41e8a0ebfa0528d420fc8f69ce9edc6ada547e55f6004a2e87a82ff9574d7d5","abstract_canon_sha256":"56e0ad25679d5019738990243bcac0aaac47f7695fe39f41eccf923845f06cb4"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T08:06:07.505506Z","signature_b64":"ymwGEnrk+x85Sk/hr5JomCytWHewrD/NcAaM7hZix1AbdeaaBCCGv5BHiw+2DOghKpCRxRPYOf0H1irn3IUqBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"aaaa1309973ccf7b46f0b38b472b244150284dc770a510c40780c0561de89adb","last_reissued_at":"2026-07-05T08:06:07.505084Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T08:06:07.505084Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Compensating slice emittance growth in high brightness photoinjectors using sacrificial charge","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.acc-ph","authors_text":"A. C. Bartnik, A. Fukasawa, G. Lawler, J. B. Rosenzweig, J. M. Maxson, M. Kaemingk, N. Majernik, W. H. Li","submitted_at":"2024-04-09T13:45:59Z","abstract_excerpt":"Achieving maximum electron beam brightness in photoinjectors requires detailed control of the 3D bunch shape and precise tuning of the beam focusing. Even in state-of-the-art designs, slice emittance growth due to nonlinear space charge forces and partial nonlaminarity often remains non-negligible. In this work we introduce a new means to linearize the transverse slice phase space: a sacrificial portion of the bunch's own charge distribution, formed into a wavebroken shock front by highly nonlinear space charge forces within the gun, whose downstream purpose is to dynamically linearize the des"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2404.06312","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2404.06312/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2404.06312","created_at":"2026-07-05T08:06:07.505138+00:00"},{"alias_kind":"arxiv_version","alias_value":"2404.06312v1","created_at":"2026-07-05T08:06:07.505138+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2404.06312","created_at":"2026-07-05T08:06:07.505138+00:00"},{"alias_kind":"pith_short_12","alias_value":"VKVBGCMXHTHX","created_at":"2026-07-05T08:06:07.505138+00:00"},{"alias_kind":"pith_short_16","alias_value":"VKVBGCMXHTHXWRXQ","created_at":"2026-07-05T08:06:07.505138+00:00"},{"alias_kind":"pith_short_8","alias_value":"VKVBGCMX","created_at":"2026-07-05T08:06:07.505138+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/VKVBGCMXHTHXWRXQWOFUOKZEIF","json":"https://pith.science/pith/VKVBGCMXHTHXWRXQWOFUOKZEIF.json","graph_json":"https://pith.science/api/pith-number/VKVBGCMXHTHXWRXQWOFUOKZEIF/graph.json","events_json":"https://pith.science/api/pith-number/VKVBGCMXHTHXWRXQWOFUOKZEIF/events.json","paper":"https://pith.science/paper/VKVBGCMX"},"agent_actions":{"view_html":"https://pith.science/pith/VKVBGCMXHTHXWRXQWOFUOKZEIF","download_json":"https://pith.science/pith/VKVBGCMXHTHXWRXQWOFUOKZEIF.json","view_paper":"https://pith.science/paper/VKVBGCMX","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2404.06312&json=true","fetch_graph":"https://pith.science/api/pith-number/VKVBGCMXHTHXWRXQWOFUOKZEIF/graph.json","fetch_events":"https://pith.science/api/pith-number/VKVBGCMXHTHXWRXQWOFUOKZEIF/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/VKVBGCMXHTHXWRXQWOFUOKZEIF/action/timestamp_anchor","attest_storage":"https://pith.science/pith/VKVBGCMXHTHXWRXQWOFUOKZEIF/action/storage_attestation","attest_author":"https://pith.science/pith/VKVBGCMXHTHXWRXQWOFUOKZEIF/action/author_attestation","sign_citation":"https://pith.science/pith/VKVBGCMXHTHXWRXQWOFUOKZEIF/action/citation_signature","submit_replication":"https://pith.science/pith/VKVBGCMXHTHXWRXQWOFUOKZEIF/action/replication_record"}},"created_at":"2026-07-05T08:06:07.505138+00:00","updated_at":"2026-07-05T08:06:07.505138+00:00"}