{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2010:EUJZ3R2UGLDE5WLP5RS23FOKXX","short_pith_number":"pith:EUJZ3R2U","schema_version":"1.0","canonical_sha256":"25139dc75432c64ed96fec65ad95cabdc4e613f0c94e325a84067c2cf6e5b9f6","source":{"kind":"arxiv","id":"1002.1734","version":1},"attestation_state":"computed","paper":{"title":"Nanoradian angular stabilization of x-ray optical components","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.ins-det","authors_text":"Frank Lenkszus, Kurt Goetze, Kwang-Je Kim, Robert Laird, Stanislav Stoupin, Yuri Shvyd'ko","submitted_at":"2010-02-08T22:41:06Z","abstract_excerpt":"An x-ray free electron laser oscillator (XFELO) has been recently proposed [K. Kim, Y. Shvyd'ko, and S. Reiche, Phys. Rev. Lett. 100, 244802 (2008)]. Angular orientation and position in space of Bragg mirrors of the XFELO optical cavity must be continuously adjusted to compensate instabilities and maximize the output intensity. An angular stability of about 10 nrad (rms) is required [K. Kim and Y. Shvyd'ko Phys. Rev. STAB 12, 030703 (2009)]. To approach this goal, a feedback loop based on a null-detection principle was designed and used for stabilization of a high energy resolution x-ray monoc"},"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":"1002.1734","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2010-02-08T22:41:06Z","cross_cats_sorted":[],"title_canon_sha256":"64f7cf8ceaef743c3c86d7eab062a464c40cd0f1ca0f1b77c4c520f3178530b6","abstract_canon_sha256":"72e64f12f563bd84a4f733efdf1b1f33f398614effbc7f2335a686efafaa5957"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:09:11.077670Z","signature_b64":"5G/LqdAVfoM++WnDoc6Xo67o9JIspnzBJIxty4wKeYFlZ95g7jQKprgWw2U9GfoSrjF5d7uOEeqmI5HAHeLmBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"25139dc75432c64ed96fec65ad95cabdc4e613f0c94e325a84067c2cf6e5b9f6","last_reissued_at":"2026-05-18T02:09:11.076936Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:09:11.076936Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Nanoradian angular stabilization of x-ray optical components","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.ins-det","authors_text":"Frank Lenkszus, Kurt Goetze, Kwang-Je Kim, Robert Laird, Stanislav Stoupin, Yuri Shvyd'ko","submitted_at":"2010-02-08T22:41:06Z","abstract_excerpt":"An x-ray free electron laser oscillator (XFELO) has been recently proposed [K. Kim, Y. Shvyd'ko, and S. Reiche, Phys. Rev. Lett. 100, 244802 (2008)]. Angular orientation and position in space of Bragg mirrors of the XFELO optical cavity must be continuously adjusted to compensate instabilities and maximize the output intensity. An angular stability of about 10 nrad (rms) is required [K. Kim and Y. Shvyd'ko Phys. Rev. STAB 12, 030703 (2009)]. To approach this goal, a feedback loop based on a null-detection principle was designed and used for stabilization of a high energy resolution x-ray monoc"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1002.1734","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1002.1734","created_at":"2026-05-18T02:09:11.077037+00:00"},{"alias_kind":"arxiv_version","alias_value":"1002.1734v1","created_at":"2026-05-18T02:09:11.077037+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1002.1734","created_at":"2026-05-18T02:09:11.077037+00:00"},{"alias_kind":"pith_short_12","alias_value":"EUJZ3R2UGLDE","created_at":"2026-05-18T12:26:06.534383+00:00"},{"alias_kind":"pith_short_16","alias_value":"EUJZ3R2UGLDE5WLP","created_at":"2026-05-18T12:26:06.534383+00:00"},{"alias_kind":"pith_short_8","alias_value":"EUJZ3R2U","created_at":"2026-05-18T12:26:06.534383+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/EUJZ3R2UGLDE5WLP5RS23FOKXX","json":"https://pith.science/pith/EUJZ3R2UGLDE5WLP5RS23FOKXX.json","graph_json":"https://pith.science/api/pith-number/EUJZ3R2UGLDE5WLP5RS23FOKXX/graph.json","events_json":"https://pith.science/api/pith-number/EUJZ3R2UGLDE5WLP5RS23FOKXX/events.json","paper":"https://pith.science/paper/EUJZ3R2U"},"agent_actions":{"view_html":"https://pith.science/pith/EUJZ3R2UGLDE5WLP5RS23FOKXX","download_json":"https://pith.science/pith/EUJZ3R2UGLDE5WLP5RS23FOKXX.json","view_paper":"https://pith.science/paper/EUJZ3R2U","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1002.1734&json=true","fetch_graph":"https://pith.science/api/pith-number/EUJZ3R2UGLDE5WLP5RS23FOKXX/graph.json","fetch_events":"https://pith.science/api/pith-number/EUJZ3R2UGLDE5WLP5RS23FOKXX/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/EUJZ3R2UGLDE5WLP5RS23FOKXX/action/timestamp_anchor","attest_storage":"https://pith.science/pith/EUJZ3R2UGLDE5WLP5RS23FOKXX/action/storage_attestation","attest_author":"https://pith.science/pith/EUJZ3R2UGLDE5WLP5RS23FOKXX/action/author_attestation","sign_citation":"https://pith.science/pith/EUJZ3R2UGLDE5WLP5RS23FOKXX/action/citation_signature","submit_replication":"https://pith.science/pith/EUJZ3R2UGLDE5WLP5RS23FOKXX/action/replication_record"}},"created_at":"2026-05-18T02:09:11.077037+00:00","updated_at":"2026-05-18T02:09:11.077037+00:00"}