{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2014:ZJJVQ2ZIXDCBKILNDP3N3FWVLB","short_pith_number":"pith:ZJJVQ2ZI","schema_version":"1.0","canonical_sha256":"ca53586b28b8c415216d1bf6dd96d558601dfa151492b7f748f5a6973e9750d2","source":{"kind":"arxiv","id":"1412.0892","version":1},"attestation_state":"computed","paper":{"title":"On the field dependent surface resistance of niobium on copper cavities","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.acc-ph","authors_text":"Tobias Junginger","submitted_at":"2014-12-02T12:41:18Z","abstract_excerpt":"The surface resistance Rs of superconducting cavities prepared by sputter coating a thin niobium film on a copper substrate increases significantly stronger with the applied RF field compared to cavities of bulk material. A possible cause is that due to the thermal boundary resistance between the copper substrate and the niobium film Rs is enhanced due to global heating of the inner cavity wall. Introducing helium gas in the cavity and measuring its pressure as a function of applied field allowed to conclude that the inner surface of the cavity is heated up by only 60+/-60 mK when Rs increases"},"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":"1412.0892","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2014-12-02T12:41:18Z","cross_cats_sorted":[],"title_canon_sha256":"c2124b1c18f1b3284d337ccdec0c7d55a62ab70abd5749088ce45671a7b81b0b","abstract_canon_sha256":"4b5961faaa3e01c28656bd4c20041e71f6486222e6de7c00b01d7a4ff64a4f56"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:36:13.782438Z","signature_b64":"PkdfnCI2CnE+ZV59i+ULPot707T3NFeqZf2+nVEXB54vQ2OZczLfvznH37QW86NwZtr2LN/6qodEW8xbwwOOBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ca53586b28b8c415216d1bf6dd96d558601dfa151492b7f748f5a6973e9750d2","last_reissued_at":"2026-05-18T01:36:13.781773Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:36:13.781773Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"On the field dependent surface resistance of niobium on copper cavities","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.acc-ph","authors_text":"Tobias Junginger","submitted_at":"2014-12-02T12:41:18Z","abstract_excerpt":"The surface resistance Rs of superconducting cavities prepared by sputter coating a thin niobium film on a copper substrate increases significantly stronger with the applied RF field compared to cavities of bulk material. A possible cause is that due to the thermal boundary resistance between the copper substrate and the niobium film Rs is enhanced due to global heating of the inner cavity wall. Introducing helium gas in the cavity and measuring its pressure as a function of applied field allowed to conclude that the inner surface of the cavity is heated up by only 60+/-60 mK when Rs increases"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1412.0892","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":"1412.0892","created_at":"2026-05-18T01:36:13.781866+00:00"},{"alias_kind":"arxiv_version","alias_value":"1412.0892v1","created_at":"2026-05-18T01:36:13.781866+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1412.0892","created_at":"2026-05-18T01:36:13.781866+00:00"},{"alias_kind":"pith_short_12","alias_value":"ZJJVQ2ZIXDCB","created_at":"2026-05-18T12:28:59.999130+00:00"},{"alias_kind":"pith_short_16","alias_value":"ZJJVQ2ZIXDCBKILN","created_at":"2026-05-18T12:28:59.999130+00:00"},{"alias_kind":"pith_short_8","alias_value":"ZJJVQ2ZI","created_at":"2026-05-18T12:28:59.999130+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/ZJJVQ2ZIXDCBKILNDP3N3FWVLB","json":"https://pith.science/pith/ZJJVQ2ZIXDCBKILNDP3N3FWVLB.json","graph_json":"https://pith.science/api/pith-number/ZJJVQ2ZIXDCBKILNDP3N3FWVLB/graph.json","events_json":"https://pith.science/api/pith-number/ZJJVQ2ZIXDCBKILNDP3N3FWVLB/events.json","paper":"https://pith.science/paper/ZJJVQ2ZI"},"agent_actions":{"view_html":"https://pith.science/pith/ZJJVQ2ZIXDCBKILNDP3N3FWVLB","download_json":"https://pith.science/pith/ZJJVQ2ZIXDCBKILNDP3N3FWVLB.json","view_paper":"https://pith.science/paper/ZJJVQ2ZI","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1412.0892&json=true","fetch_graph":"https://pith.science/api/pith-number/ZJJVQ2ZIXDCBKILNDP3N3FWVLB/graph.json","fetch_events":"https://pith.science/api/pith-number/ZJJVQ2ZIXDCBKILNDP3N3FWVLB/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ZJJVQ2ZIXDCBKILNDP3N3FWVLB/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ZJJVQ2ZIXDCBKILNDP3N3FWVLB/action/storage_attestation","attest_author":"https://pith.science/pith/ZJJVQ2ZIXDCBKILNDP3N3FWVLB/action/author_attestation","sign_citation":"https://pith.science/pith/ZJJVQ2ZIXDCBKILNDP3N3FWVLB/action/citation_signature","submit_replication":"https://pith.science/pith/ZJJVQ2ZIXDCBKILNDP3N3FWVLB/action/replication_record"}},"created_at":"2026-05-18T01:36:13.781866+00:00","updated_at":"2026-05-18T01:36:13.781866+00:00"}