{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:BOXBRZEQZHWQ256C5UBD6WL3WZ","short_pith_number":"pith:BOXBRZEQ","schema_version":"1.0","canonical_sha256":"0bae18e490c9ed0d77c2ed023f597bb64c18b402394400dd5a9d34b9c2ec133c","source":{"kind":"arxiv","id":"2606.11590","version":1},"attestation_state":"computed","paper":{"title":"A High-Precision Clock Synchronization System for the CEPC Accelerator","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.SY","eess.SY"],"primary_cat":"hep-ex","authors_text":"Dapeng Jin, Jun Hu, Xiaoshan Jiang, Xin Zhou","submitted_at":"2026-06-10T02:35:51Z","abstract_excerpt":"The Circular Electron Positron Collider (CEPC) distributes a reference clock distributed to 192 control nodes along its 100~km underground tunnel. The required synchronization precision is 30~ps (standard deviation). We present an enhanced White Rabbit (WR)-based clock synchronization system designed to meet this requirement. A noise-budget analysis of the standard WR slave loop identifies the analog actuation chain (DAC + VCXO + multiplier PLL) and restart-induced timing uncertainty as the dominant limitations. In our redesigned node, the DAC+VCXO chain is replaced by a Si5345A DSPLL clock ge"},"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":"2606.11590","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ex","submitted_at":"2026-06-10T02:35:51Z","cross_cats_sorted":["cs.SY","eess.SY"],"title_canon_sha256":"1415857b9e50c4f9c2d44a5c1d4f3a9ee2e274116b1d1da5c92a6f5c6a6f77a3","abstract_canon_sha256":"7af0bb5fe38c3f76ba0d9dbcb59c9f682fb7a851e43213458a3dde370a1401ac"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-11T01:09:57.786730Z","signature_b64":"W/GK5KUur51Rxa9rzMRelsU+aqUogUjdGeJAmwXtFrCwKmwHdt4USluS0Z1vhZrCH6Zn6jwI3Ok031z1wEsBAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0bae18e490c9ed0d77c2ed023f597bb64c18b402394400dd5a9d34b9c2ec133c","last_reissued_at":"2026-06-11T01:09:57.786056Z","signature_status":"signed_v1","first_computed_at":"2026-06-11T01:09:57.786056Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A High-Precision Clock Synchronization System for the CEPC Accelerator","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.SY","eess.SY"],"primary_cat":"hep-ex","authors_text":"Dapeng Jin, Jun Hu, Xiaoshan Jiang, Xin Zhou","submitted_at":"2026-06-10T02:35:51Z","abstract_excerpt":"The Circular Electron Positron Collider (CEPC) distributes a reference clock distributed to 192 control nodes along its 100~km underground tunnel. The required synchronization precision is 30~ps (standard deviation). We present an enhanced White Rabbit (WR)-based clock synchronization system designed to meet this requirement. A noise-budget analysis of the standard WR slave loop identifies the analog actuation chain (DAC + VCXO + multiplier PLL) and restart-induced timing uncertainty as the dominant limitations. In our redesigned node, the DAC+VCXO chain is replaced by a Si5345A DSPLL clock ge"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.11590","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/2606.11590/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2606.11590","created_at":"2026-06-11T01:09:57.786190+00:00"},{"alias_kind":"arxiv_version","alias_value":"2606.11590v1","created_at":"2026-06-11T01:09:57.786190+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.11590","created_at":"2026-06-11T01:09:57.786190+00:00"},{"alias_kind":"pith_short_12","alias_value":"BOXBRZEQZHWQ","created_at":"2026-06-11T01:09:57.786190+00:00"},{"alias_kind":"pith_short_16","alias_value":"BOXBRZEQZHWQ256C","created_at":"2026-06-11T01:09:57.786190+00:00"},{"alias_kind":"pith_short_8","alias_value":"BOXBRZEQ","created_at":"2026-06-11T01:09:57.786190+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/BOXBRZEQZHWQ256C5UBD6WL3WZ","json":"https://pith.science/pith/BOXBRZEQZHWQ256C5UBD6WL3WZ.json","graph_json":"https://pith.science/api/pith-number/BOXBRZEQZHWQ256C5UBD6WL3WZ/graph.json","events_json":"https://pith.science/api/pith-number/BOXBRZEQZHWQ256C5UBD6WL3WZ/events.json","paper":"https://pith.science/paper/BOXBRZEQ"},"agent_actions":{"view_html":"https://pith.science/pith/BOXBRZEQZHWQ256C5UBD6WL3WZ","download_json":"https://pith.science/pith/BOXBRZEQZHWQ256C5UBD6WL3WZ.json","view_paper":"https://pith.science/paper/BOXBRZEQ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2606.11590&json=true","fetch_graph":"https://pith.science/api/pith-number/BOXBRZEQZHWQ256C5UBD6WL3WZ/graph.json","fetch_events":"https://pith.science/api/pith-number/BOXBRZEQZHWQ256C5UBD6WL3WZ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/BOXBRZEQZHWQ256C5UBD6WL3WZ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/BOXBRZEQZHWQ256C5UBD6WL3WZ/action/storage_attestation","attest_author":"https://pith.science/pith/BOXBRZEQZHWQ256C5UBD6WL3WZ/action/author_attestation","sign_citation":"https://pith.science/pith/BOXBRZEQZHWQ256C5UBD6WL3WZ/action/citation_signature","submit_replication":"https://pith.science/pith/BOXBRZEQZHWQ256C5UBD6WL3WZ/action/replication_record"}},"created_at":"2026-06-11T01:09:57.786190+00:00","updated_at":"2026-06-11T01:09:57.786190+00:00"}