{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2021:5WEG3DZEDTV3OWAG3I3S2DIYMG","short_pith_number":"pith:5WEG3DZE","schema_version":"1.0","canonical_sha256":"ed886d8f241cebb75806da372d0d1861ac3ee1cb668cb1a20556b5ebb8e68640","source":{"kind":"arxiv","id":"2107.07226","version":1},"attestation_state":"computed","paper":{"title":"Proton Radiography in Background Magnetic Fields","license":"http://creativecommons.org/licenses/by-sa/4.0/","headline":"","cross_cats":["physics.ins-det"],"primary_cat":"physics.plasm-ph","authors_text":"Christopher Arran, Christopher P. Ridgers, Nigel C. Woolsey","submitted_at":"2021-07-15T10:05:11Z","abstract_excerpt":"Proton radiography has proved increasingly successful as a diagnostic for electric and magnetic fields in high energy density physics experiments. Most experiments use target-normal-sheath-acceleration sources with a wide energy range in the proton beam, as the velocity spread can help differentiate between electric and magnetic fields and provide time histories in a single shot. However, in magnetised plasma experiments with strong background fields, the broadband proton spectrum leads to velocity-spread-dependent displacement of the beam and significant blurring of the radiograph. We describ"},"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":"2107.07226","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"physics.plasm-ph","submitted_at":"2021-07-15T10:05:11Z","cross_cats_sorted":["physics.ins-det"],"title_canon_sha256":"ac384d010d86f15bb37a2b43491058b866029c20998e9d3a649ca45d0f6fd0f0","abstract_canon_sha256":"04d97077c58bd2419c9238620ef348af00c70cf2556d00fbd371fbbcbc23bfb7"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:58:12.072634Z","signature_b64":"K8Z5T6j1or362zz1DUB1roU7+B98gx+EKC8m+GoooUaSQRdw9mUw7ayMWt5Da08NA870I2csQmW+w3+CMZ+RAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ed886d8f241cebb75806da372d0d1861ac3ee1cb668cb1a20556b5ebb8e68640","last_reissued_at":"2026-07-05T02:58:12.072274Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:58:12.072274Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Proton Radiography in Background Magnetic Fields","license":"http://creativecommons.org/licenses/by-sa/4.0/","headline":"","cross_cats":["physics.ins-det"],"primary_cat":"physics.plasm-ph","authors_text":"Christopher Arran, Christopher P. Ridgers, Nigel C. Woolsey","submitted_at":"2021-07-15T10:05:11Z","abstract_excerpt":"Proton radiography has proved increasingly successful as a diagnostic for electric and magnetic fields in high energy density physics experiments. Most experiments use target-normal-sheath-acceleration sources with a wide energy range in the proton beam, as the velocity spread can help differentiate between electric and magnetic fields and provide time histories in a single shot. However, in magnetised plasma experiments with strong background fields, the broadband proton spectrum leads to velocity-spread-dependent displacement of the beam and significant blurring of the radiograph. We describ"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2107.07226","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/2107.07226/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":"2107.07226","created_at":"2026-07-05T02:58:12.072341+00:00"},{"alias_kind":"arxiv_version","alias_value":"2107.07226v1","created_at":"2026-07-05T02:58:12.072341+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2107.07226","created_at":"2026-07-05T02:58:12.072341+00:00"},{"alias_kind":"pith_short_12","alias_value":"5WEG3DZEDTV3","created_at":"2026-07-05T02:58:12.072341+00:00"},{"alias_kind":"pith_short_16","alias_value":"5WEG3DZEDTV3OWAG","created_at":"2026-07-05T02:58:12.072341+00:00"},{"alias_kind":"pith_short_8","alias_value":"5WEG3DZE","created_at":"2026-07-05T02:58:12.072341+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/5WEG3DZEDTV3OWAG3I3S2DIYMG","json":"https://pith.science/pith/5WEG3DZEDTV3OWAG3I3S2DIYMG.json","graph_json":"https://pith.science/api/pith-number/5WEG3DZEDTV3OWAG3I3S2DIYMG/graph.json","events_json":"https://pith.science/api/pith-number/5WEG3DZEDTV3OWAG3I3S2DIYMG/events.json","paper":"https://pith.science/paper/5WEG3DZE"},"agent_actions":{"view_html":"https://pith.science/pith/5WEG3DZEDTV3OWAG3I3S2DIYMG","download_json":"https://pith.science/pith/5WEG3DZEDTV3OWAG3I3S2DIYMG.json","view_paper":"https://pith.science/paper/5WEG3DZE","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2107.07226&json=true","fetch_graph":"https://pith.science/api/pith-number/5WEG3DZEDTV3OWAG3I3S2DIYMG/graph.json","fetch_events":"https://pith.science/api/pith-number/5WEG3DZEDTV3OWAG3I3S2DIYMG/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/5WEG3DZEDTV3OWAG3I3S2DIYMG/action/timestamp_anchor","attest_storage":"https://pith.science/pith/5WEG3DZEDTV3OWAG3I3S2DIYMG/action/storage_attestation","attest_author":"https://pith.science/pith/5WEG3DZEDTV3OWAG3I3S2DIYMG/action/author_attestation","sign_citation":"https://pith.science/pith/5WEG3DZEDTV3OWAG3I3S2DIYMG/action/citation_signature","submit_replication":"https://pith.science/pith/5WEG3DZEDTV3OWAG3I3S2DIYMG/action/replication_record"}},"created_at":"2026-07-05T02:58:12.072341+00:00","updated_at":"2026-07-05T02:58:12.072341+00:00"}