{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:SWGXHPMJPMYXD4MS5XFAU2KALY","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":"9f37ce8c6154aeb5bb5bf69814db847d9feb9488cebb2b5c2302d14a9adf5bf5","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"physics.med-ph","submitted_at":"2024-09-14T19:59:54Z","title_canon_sha256":"33a674da9fa2147a105ae5cd747d63e4cf52641de634c90151dd7fdbc808769e"},"schema_version":"1.0","source":{"id":"2409.09518","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2409.09518","created_at":"2026-07-05T09:27:24Z"},{"alias_kind":"arxiv_version","alias_value":"2409.09518v1","created_at":"2026-07-05T09:27:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2409.09518","created_at":"2026-07-05T09:27:24Z"},{"alias_kind":"pith_short_12","alias_value":"SWGXHPMJPMYX","created_at":"2026-07-05T09:27:24Z"},{"alias_kind":"pith_short_16","alias_value":"SWGXHPMJPMYXD4MS","created_at":"2026-07-05T09:27:24Z"},{"alias_kind":"pith_short_8","alias_value":"SWGXHPMJ","created_at":"2026-07-05T09:27:24Z"}],"graph_snapshots":[{"event_id":"sha256:0805c28e3d4757082e34df73dd12f33905da30822696522b0a88647f1a36a51d","target":"graph","created_at":"2026-07-05T09:27:24Z","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/2409.09518/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Previously, a synchrotron-based horizontal proton beamline (87.2 MeV) was successfully commissioned to deliver radiation doses in FLASH and conventional dose rate modes to small fields and volumes. In this study, we developed a strategy to increase the effective radiation field size using a custom robotic motion platform to automatically shift the positions of biological samples. The beam was first broadened with a thin tungsten scatterer and shaped by customized brass collimators for irradiating cell/organoid cultures in 96-well plates (a 7-mm-diameter circle) or for irradiating mice (1-cm2 s","authors_text":"Albert C. Koong, Dadi Jiang, David R. Grosshans, Fada Guan, Julianna Bronk, Kiminori Iga, Lawrence Bronk, Liang Wang, Ming Yang, Narayan Sahoo, Radhe Mohan, Xiaochun Wang, Xiaorong R. Zhu, Youming Guo, Yuting Li","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"physics.med-ph","submitted_at":"2024-09-14T19:59:54Z","title":"Mimicking large spot-scanning radiation fields for proton FLASH preclinical studies with a robotic motion platform"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2409.09518","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:cfc1ecab8f08097463e3b76121d60038e22c465d8406e8b35ae4ef0d3289cc86","target":"record","created_at":"2026-07-05T09:27:24Z","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":"9f37ce8c6154aeb5bb5bf69814db847d9feb9488cebb2b5c2302d14a9adf5bf5","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"physics.med-ph","submitted_at":"2024-09-14T19:59:54Z","title_canon_sha256":"33a674da9fa2147a105ae5cd747d63e4cf52641de634c90151dd7fdbc808769e"},"schema_version":"1.0","source":{"id":"2409.09518","kind":"arxiv","version":1}},"canonical_sha256":"958d73bd897b3171f192edca0a69405e154609b10e3353433ac4046ea31c4c3f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"958d73bd897b3171f192edca0a69405e154609b10e3353433ac4046ea31c4c3f","first_computed_at":"2026-07-05T09:27:24.896760Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T09:27:24.896760Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"GJFY72OhGL1RKRmxtiuQYzcAv9YEVxCW9C3h/l3Uvk3WyQnbF/WpnZJUR52lkohTmIrcs+vpUfmXKPa9b7yRBw==","signature_status":"signed_v1","signed_at":"2026-07-05T09:27:24.897269Z","signed_message":"canonical_sha256_bytes"},"source_id":"2409.09518","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cfc1ecab8f08097463e3b76121d60038e22c465d8406e8b35ae4ef0d3289cc86","sha256:0805c28e3d4757082e34df73dd12f33905da30822696522b0a88647f1a36a51d"],"state_sha256":"259f55b743d2b41d7e672e3ee6c92907214ed14a966186d2a9530920f1a74105"}