{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:NLVQGSAZWUPOEIVH5LWEWBTMRZ","short_pith_number":"pith:NLVQGSAZ","canonical_record":{"source":{"id":"2404.06377","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.acc-ph","submitted_at":"2024-04-09T15:21:12Z","cross_cats_sorted":[],"title_canon_sha256":"5247a1647ad9f7a9989463c0e199da42079c9b10e3dc220ab25446d61f7a5cb9","abstract_canon_sha256":"2ad5601129ec7a39f12ba756ebb1dbfb93eee35c32933e2000a7f1510e76f3ba"},"schema_version":"1.0"},"canonical_sha256":"6aeb034819b51ee222a7eaec4b066c8e69efb1113083c22eaef3ad4f160b32a7","source":{"kind":"arxiv","id":"2404.06377","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2404.06377","created_at":"2026-07-05T08:06:08Z"},{"alias_kind":"arxiv_version","alias_value":"2404.06377v1","created_at":"2026-07-05T08:06:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2404.06377","created_at":"2026-07-05T08:06:08Z"},{"alias_kind":"pith_short_12","alias_value":"NLVQGSAZWUPO","created_at":"2026-07-05T08:06:08Z"},{"alias_kind":"pith_short_16","alias_value":"NLVQGSAZWUPOEIVH","created_at":"2026-07-05T08:06:08Z"},{"alias_kind":"pith_short_8","alias_value":"NLVQGSAZ","created_at":"2026-07-05T08:06:08Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:NLVQGSAZWUPOEIVH5LWEWBTMRZ","target":"record","payload":{"canonical_record":{"source":{"id":"2404.06377","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.acc-ph","submitted_at":"2024-04-09T15:21:12Z","cross_cats_sorted":[],"title_canon_sha256":"5247a1647ad9f7a9989463c0e199da42079c9b10e3dc220ab25446d61f7a5cb9","abstract_canon_sha256":"2ad5601129ec7a39f12ba756ebb1dbfb93eee35c32933e2000a7f1510e76f3ba"},"schema_version":"1.0"},"canonical_sha256":"6aeb034819b51ee222a7eaec4b066c8e69efb1113083c22eaef3ad4f160b32a7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T08:06:08.372260Z","signature_b64":"rZD0a7+hnByMzdEbPh4Qvv9DGmZk+B0M+mq+jmJJwAxFvac7xFNXnazGgl1xE5xnV707xKJKuj6XUs6gaAXUCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6aeb034819b51ee222a7eaec4b066c8e69efb1113083c22eaef3ad4f160b32a7","last_reissued_at":"2026-07-05T08:06:08.371823Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T08:06:08.371823Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2404.06377","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T08:06:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Rfn1LAi7PoQg3SSbYVTI2LPXSqCBQ9RSnmtI0aqkiEp/P37KE8Rb1XsgTKa3aurKrIYWjpTbxrya47rZpw2UAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T16:18:21.606706Z"},"content_sha256":"fe176d5c5db22203ba6f7cf9f0445a2750e5adb059d5f9d391210d228ca4073f","schema_version":"1.0","event_id":"sha256:fe176d5c5db22203ba6f7cf9f0445a2750e5adb059d5f9d391210d228ca4073f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:NLVQGSAZWUPOEIVH5LWEWBTMRZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Experimental study of second sound quench detection for superconducting cavities","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.acc-ph","authors_text":"Aur\\'elien Four, Benedikt Peters, Bertrand Baudouy, Jean-Pierre Charrier, Jorge Novo, Juliette Plouin, Kitty Liao, Luc Maurice","submitted_at":"2024-04-09T15:21:12Z","abstract_excerpt":"Superconducting RF cavities are used in particle accelerators to provide energy to the particle beam. Such cavities are mostly fabricated in niobium and often operated in superfluid helium. One of their limits of operation is the appearance of a local quench, initiated by a local field enhancement due to a defect, which leads to a normal conducting transition of the cavity. Localizing the quench area can be achieved with temperature mapping systems. Another method is the use of second sound wave propagation in superfluid helium. Measuring the time of propagation of these waves from quench loca"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2404.06377","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/2404.06377/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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T08:06:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YmoOsvS2sWHVWB50LvoqRhMbsetVoqftBw9ipTD8Q7vYlEbmeRj/6Lzg7xjs1+et3Cr+F6DQfXpxY+LBQzeRAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T16:18:21.607233Z"},"content_sha256":"e9fac303086f956dd900a0c7647951d188733b71ebe474c1f52478d5becde310","schema_version":"1.0","event_id":"sha256:e9fac303086f956dd900a0c7647951d188733b71ebe474c1f52478d5becde310"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NLVQGSAZWUPOEIVH5LWEWBTMRZ/bundle.json","state_url":"https://pith.science/pith/NLVQGSAZWUPOEIVH5LWEWBTMRZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NLVQGSAZWUPOEIVH5LWEWBTMRZ/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-04T16:18:21Z","links":{"resolver":"https://pith.science/pith/NLVQGSAZWUPOEIVH5LWEWBTMRZ","bundle":"https://pith.science/pith/NLVQGSAZWUPOEIVH5LWEWBTMRZ/bundle.json","state":"https://pith.science/pith/NLVQGSAZWUPOEIVH5LWEWBTMRZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NLVQGSAZWUPOEIVH5LWEWBTMRZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:NLVQGSAZWUPOEIVH5LWEWBTMRZ","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"2ad5601129ec7a39f12ba756ebb1dbfb93eee35c32933e2000a7f1510e76f3ba","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.acc-ph","submitted_at":"2024-04-09T15:21:12Z","title_canon_sha256":"5247a1647ad9f7a9989463c0e199da42079c9b10e3dc220ab25446d61f7a5cb9"},"schema_version":"1.0","source":{"id":"2404.06377","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2404.06377","created_at":"2026-07-05T08:06:08Z"},{"alias_kind":"arxiv_version","alias_value":"2404.06377v1","created_at":"2026-07-05T08:06:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2404.06377","created_at":"2026-07-05T08:06:08Z"},{"alias_kind":"pith_short_12","alias_value":"NLVQGSAZWUPO","created_at":"2026-07-05T08:06:08Z"},{"alias_kind":"pith_short_16","alias_value":"NLVQGSAZWUPOEIVH","created_at":"2026-07-05T08:06:08Z"},{"alias_kind":"pith_short_8","alias_value":"NLVQGSAZ","created_at":"2026-07-05T08:06:08Z"}],"graph_snapshots":[{"event_id":"sha256:e9fac303086f956dd900a0c7647951d188733b71ebe474c1f52478d5becde310","target":"graph","created_at":"2026-07-05T08:06:08Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2404.06377/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Superconducting RF cavities are used in particle accelerators to provide energy to the particle beam. Such cavities are mostly fabricated in niobium and often operated in superfluid helium. One of their limits of operation is the appearance of a local quench, initiated by a local field enhancement due to a defect, which leads to a normal conducting transition of the cavity. Localizing the quench area can be achieved with temperature mapping systems. Another method is the use of second sound wave propagation in superfluid helium. Measuring the time of propagation of these waves from quench loca","authors_text":"Aur\\'elien Four, Benedikt Peters, Bertrand Baudouy, Jean-Pierre Charrier, Jorge Novo, Juliette Plouin, Kitty Liao, Luc Maurice","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.acc-ph","submitted_at":"2024-04-09T15:21:12Z","title":"Experimental study of second sound quench detection for superconducting cavities"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2404.06377","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:fe176d5c5db22203ba6f7cf9f0445a2750e5adb059d5f9d391210d228ca4073f","target":"record","created_at":"2026-07-05T08:06:08Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"2ad5601129ec7a39f12ba756ebb1dbfb93eee35c32933e2000a7f1510e76f3ba","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.acc-ph","submitted_at":"2024-04-09T15:21:12Z","title_canon_sha256":"5247a1647ad9f7a9989463c0e199da42079c9b10e3dc220ab25446d61f7a5cb9"},"schema_version":"1.0","source":{"id":"2404.06377","kind":"arxiv","version":1}},"canonical_sha256":"6aeb034819b51ee222a7eaec4b066c8e69efb1113083c22eaef3ad4f160b32a7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6aeb034819b51ee222a7eaec4b066c8e69efb1113083c22eaef3ad4f160b32a7","first_computed_at":"2026-07-05T08:06:08.371823Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T08:06:08.371823Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"rZD0a7+hnByMzdEbPh4Qvv9DGmZk+B0M+mq+jmJJwAxFvac7xFNXnazGgl1xE5xnV707xKJKuj6XUs6gaAXUCw==","signature_status":"signed_v1","signed_at":"2026-07-05T08:06:08.372260Z","signed_message":"canonical_sha256_bytes"},"source_id":"2404.06377","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fe176d5c5db22203ba6f7cf9f0445a2750e5adb059d5f9d391210d228ca4073f","sha256:e9fac303086f956dd900a0c7647951d188733b71ebe474c1f52478d5becde310"],"state_sha256":"303b3c88190c90bfc66aec230660686dc3fcae407cf804ab02a60eb584ec5eb1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8EfqP6hoZxn/A9KMLiStZu9LoPTKCH5MV/bDp/2o5pOyx6+KWQnrbQ7/+0EbDGLVxcxLNPlZDzyalIPqXxiKBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T16:18:21.611497Z","bundle_sha256":"8c4e5fb9d1c012e5f4206defbfb8440e7591af676abda1f62455af3db5d3df19"}}