{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:3C74T4UU6XL4QDCZE4EHZDZRPU","short_pith_number":"pith:3C74T4UU","schema_version":"1.0","canonical_sha256":"d8bfc9f294f5d7c80c5927087c8f317d2bd15efc81e788deb1649c4ea534c371","source":{"kind":"arxiv","id":"1804.04747","version":2},"attestation_state":"computed","paper":{"title":"Improved RF Measurements of SRF Cavity Quality Factors","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.acc-ph","authors_text":"((1) Fermi National Accelerator Laboratory, (2) Facility for Rare Isotope Beams), C. Contreras (2), D. Sergatskov (1), J.P. Holzbauer (1), W. Schappert (1), Y. Pischalnikov (1)","submitted_at":"2018-04-12T23:22:05Z","abstract_excerpt":"SRF cavity quality factors can be accurately measured using RF-power based techniques only when the cavity is very close to critically coupled. This limitation is from systematic errors driven by non-ideal RF components. When the cavity is not close to critically coupled, these systematic effects limit the accuracy of the measurements. The combination of the complex base-band envelopes of the cavity RF signals in combination with a trombone in the circuit allow the relative calibration of the RF signals to be extracted from the data and systematic effects to be characterized and suppressed. Th"},"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":"1804.04747","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2018-04-12T23:22:05Z","cross_cats_sorted":[],"title_canon_sha256":"fd03a4f68dcb81fa678d57a475fda08bae6df7ad992a449925285eb2de4c4970","abstract_canon_sha256":"6809a5e2c79adbc51d6ae089eaa859ac6913763d138df25f358f3b1bda0f63fb"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:00:56.471566Z","signature_b64":"B29WwUvKyUSNKQcp47cJRNTx7QPVLVB4GdJKTzibXzfhASRyHcnorAUODJ99dI380qvrX/hs1ikmAfkHEuHZBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d8bfc9f294f5d7c80c5927087c8f317d2bd15efc81e788deb1649c4ea534c371","last_reissued_at":"2026-05-18T00:00:56.471113Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:00:56.471113Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Improved RF Measurements of SRF Cavity Quality Factors","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.acc-ph","authors_text":"((1) Fermi National Accelerator Laboratory, (2) Facility for Rare Isotope Beams), C. Contreras (2), D. Sergatskov (1), J.P. Holzbauer (1), W. Schappert (1), Y. Pischalnikov (1)","submitted_at":"2018-04-12T23:22:05Z","abstract_excerpt":"SRF cavity quality factors can be accurately measured using RF-power based techniques only when the cavity is very close to critically coupled. This limitation is from systematic errors driven by non-ideal RF components. When the cavity is not close to critically coupled, these systematic effects limit the accuracy of the measurements. The combination of the complex base-band envelopes of the cavity RF signals in combination with a trombone in the circuit allow the relative calibration of the RF signals to be extracted from the data and systematic effects to be characterized and suppressed. Th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.04747","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":"1804.04747","created_at":"2026-05-18T00:00:56.471185+00:00"},{"alias_kind":"arxiv_version","alias_value":"1804.04747v2","created_at":"2026-05-18T00:00:56.471185+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.04747","created_at":"2026-05-18T00:00:56.471185+00:00"},{"alias_kind":"pith_short_12","alias_value":"3C74T4UU6XL4","created_at":"2026-05-18T12:32:02.567920+00:00"},{"alias_kind":"pith_short_16","alias_value":"3C74T4UU6XL4QDCZ","created_at":"2026-05-18T12:32:02.567920+00:00"},{"alias_kind":"pith_short_8","alias_value":"3C74T4UU","created_at":"2026-05-18T12:32:02.567920+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/3C74T4UU6XL4QDCZE4EHZDZRPU","json":"https://pith.science/pith/3C74T4UU6XL4QDCZE4EHZDZRPU.json","graph_json":"https://pith.science/api/pith-number/3C74T4UU6XL4QDCZE4EHZDZRPU/graph.json","events_json":"https://pith.science/api/pith-number/3C74T4UU6XL4QDCZE4EHZDZRPU/events.json","paper":"https://pith.science/paper/3C74T4UU"},"agent_actions":{"view_html":"https://pith.science/pith/3C74T4UU6XL4QDCZE4EHZDZRPU","download_json":"https://pith.science/pith/3C74T4UU6XL4QDCZE4EHZDZRPU.json","view_paper":"https://pith.science/paper/3C74T4UU","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1804.04747&json=true","fetch_graph":"https://pith.science/api/pith-number/3C74T4UU6XL4QDCZE4EHZDZRPU/graph.json","fetch_events":"https://pith.science/api/pith-number/3C74T4UU6XL4QDCZE4EHZDZRPU/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/3C74T4UU6XL4QDCZE4EHZDZRPU/action/timestamp_anchor","attest_storage":"https://pith.science/pith/3C74T4UU6XL4QDCZE4EHZDZRPU/action/storage_attestation","attest_author":"https://pith.science/pith/3C74T4UU6XL4QDCZE4EHZDZRPU/action/author_attestation","sign_citation":"https://pith.science/pith/3C74T4UU6XL4QDCZE4EHZDZRPU/action/citation_signature","submit_replication":"https://pith.science/pith/3C74T4UU6XL4QDCZE4EHZDZRPU/action/replication_record"}},"created_at":"2026-05-18T00:00:56.471185+00:00","updated_at":"2026-05-18T00:00:56.471185+00:00"}