{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:7QS24WY3MA5MVPZCRGHGSC3UIG","short_pith_number":"pith:7QS24WY3","schema_version":"1.0","canonical_sha256":"fc25ae5b1b603acabf22898e690b7441bc597040c1d43e5a1e4ea49d5b513e3f","source":{"kind":"arxiv","id":"1511.07668","version":2},"attestation_state":"computed","paper":{"title":"Experimental comparison of various techniques for spot size measurement of high-energy x-ray source","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.acc-ph","authors_text":"Chenggang Li, Hong Li, Jianjun Deng, Jinming Cheng, Jinshui Shi, Nan Chen, Qin Li, Quanhong Long, Wenhua Dai, Yi Wang","submitted_at":"2015-11-24T12:09:03Z","abstract_excerpt":"In the experiment of flash-radiography, the quality of acquired image strongly depends on the focal size of the x-ray source spot. A variety of techniques based on imaging of pinhole, slit and rollbar are adopted to measure the focal spot size of the Dragon-I linear induction accelerator. The image of pinhole provides a two-dimensional distribution of the x-ray spot, while those of slit and rollbar give a line-spread distribution and an edge-spread distribution, respectively. The spot size characterized by full-width at half-maximum and that characterized by the LANL definition are calculated "},"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":"1511.07668","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2015-11-24T12:09:03Z","cross_cats_sorted":[],"title_canon_sha256":"845e19056e5b60154722343f07fff5d4e99ae399cf7cbeeb6d7a6b92aecf3b54","abstract_canon_sha256":"1eafecb26e96abf6ceac9e49f016ad5e65b339f791177198749157a9039b17de"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:08:12.641587Z","signature_b64":"tjWqUrzUtxHlhrO2UW2A41t12o0yrviXvfNijQWCi9tdx0zyHWJ/X0R1Zuqcp56U6SIpLFxNNDfqxn3pabbgBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fc25ae5b1b603acabf22898e690b7441bc597040c1d43e5a1e4ea49d5b513e3f","last_reissued_at":"2026-05-18T01:08:12.640999Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:08:12.640999Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Experimental comparison of various techniques for spot size measurement of high-energy x-ray source","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.acc-ph","authors_text":"Chenggang Li, Hong Li, Jianjun Deng, Jinming Cheng, Jinshui Shi, Nan Chen, Qin Li, Quanhong Long, Wenhua Dai, Yi Wang","submitted_at":"2015-11-24T12:09:03Z","abstract_excerpt":"In the experiment of flash-radiography, the quality of acquired image strongly depends on the focal size of the x-ray source spot. A variety of techniques based on imaging of pinhole, slit and rollbar are adopted to measure the focal spot size of the Dragon-I linear induction accelerator. The image of pinhole provides a two-dimensional distribution of the x-ray spot, while those of slit and rollbar give a line-spread distribution and an edge-spread distribution, respectively. The spot size characterized by full-width at half-maximum and that characterized by the LANL definition are calculated "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.07668","kind":"arxiv","version":2},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1511.07668","created_at":"2026-05-18T01:08:12.641100+00:00"},{"alias_kind":"arxiv_version","alias_value":"1511.07668v2","created_at":"2026-05-18T01:08:12.641100+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1511.07668","created_at":"2026-05-18T01:08:12.641100+00:00"},{"alias_kind":"pith_short_12","alias_value":"7QS24WY3MA5M","created_at":"2026-05-18T12:29:10.953037+00:00"},{"alias_kind":"pith_short_16","alias_value":"7QS24WY3MA5MVPZC","created_at":"2026-05-18T12:29:10.953037+00:00"},{"alias_kind":"pith_short_8","alias_value":"7QS24WY3","created_at":"2026-05-18T12:29:10.953037+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/7QS24WY3MA5MVPZCRGHGSC3UIG","json":"https://pith.science/pith/7QS24WY3MA5MVPZCRGHGSC3UIG.json","graph_json":"https://pith.science/api/pith-number/7QS24WY3MA5MVPZCRGHGSC3UIG/graph.json","events_json":"https://pith.science/api/pith-number/7QS24WY3MA5MVPZCRGHGSC3UIG/events.json","paper":"https://pith.science/paper/7QS24WY3"},"agent_actions":{"view_html":"https://pith.science/pith/7QS24WY3MA5MVPZCRGHGSC3UIG","download_json":"https://pith.science/pith/7QS24WY3MA5MVPZCRGHGSC3UIG.json","view_paper":"https://pith.science/paper/7QS24WY3","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1511.07668&json=true","fetch_graph":"https://pith.science/api/pith-number/7QS24WY3MA5MVPZCRGHGSC3UIG/graph.json","fetch_events":"https://pith.science/api/pith-number/7QS24WY3MA5MVPZCRGHGSC3UIG/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/7QS24WY3MA5MVPZCRGHGSC3UIG/action/timestamp_anchor","attest_storage":"https://pith.science/pith/7QS24WY3MA5MVPZCRGHGSC3UIG/action/storage_attestation","attest_author":"https://pith.science/pith/7QS24WY3MA5MVPZCRGHGSC3UIG/action/author_attestation","sign_citation":"https://pith.science/pith/7QS24WY3MA5MVPZCRGHGSC3UIG/action/citation_signature","submit_replication":"https://pith.science/pith/7QS24WY3MA5MVPZCRGHGSC3UIG/action/replication_record"}},"created_at":"2026-05-18T01:08:12.641100+00:00","updated_at":"2026-05-18T01:08:12.641100+00:00"}