{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2014:C6NDPYLRVFVWM4MXP45O5NMTUS","short_pith_number":"pith:C6NDPYLR","schema_version":"1.0","canonical_sha256":"179a37e171a96b6671977f3aeeb593a49fa5d47529a35990d912ef86f330d8e7","source":{"kind":"arxiv","id":"1406.4028","version":3},"attestation_state":"computed","paper":{"title":"The ONSEN Data Reduction System for the Belle II Pixel Detector","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"physics.ins-det","authors_text":"(2) Institute of High Energy Physics, Bj\\\"orn Spruck (1), Chinese Academy of Sciences), David M\\\"unchow (1), Jens S\\\"oren Lange (1), Jingzhou Zhao (2) ((1) II. Physikalisches Institut, Justus Liebig University Giessen, Thomas Ge{\\ss}ler (1), Wolfgang K\\\"uhn (1), Zhen'An Liu (2)","submitted_at":"2014-06-16T14:27:30Z","abstract_excerpt":"We present an FPGA-based online data reduction system for the pixel detector of the future Belle II experiment. The occupancy of the pixel detector is estimated at 3 %. This corresponds to a data output rate of more than 20 GB/s after zero suppression, dominated by background. The Online Selection Nodes (ONSEN) system aims to reduce the background data by a factor of 30. It consists of 33 MicroTCA cards, each equipped with a Xilinx Virtex-5 FPGA and 4 GiB DDR2 RAM. These cards are hosted by 9 AdvancedTCA carrier boards. The ONSEN system buffers the entire output data from the pixel detector fo"},"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":"1406.4028","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2014-06-16T14:27:30Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"af6cf2f32d1233af61bd6c6d1d523e15e22bc05bea6490a5eaa49c001f1a7217","abstract_canon_sha256":"c0421c4e165847ca0f94fb9928de1514cd8bb155b449caf4662a6cc02d17b688"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:36:58.390826Z","signature_b64":"o0Is1sn+8XnDx/xVu76sGstfmo72vCGu6vOvzTZM5YphajOT0YHy5hZfKOl+zf53VT1Qh7AHEMrd+yVSCM7rCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"179a37e171a96b6671977f3aeeb593a49fa5d47529a35990d912ef86f330d8e7","last_reissued_at":"2026-05-18T01:36:58.389862Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:36:58.389862Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The ONSEN Data Reduction System for the Belle II Pixel Detector","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"physics.ins-det","authors_text":"(2) Institute of High Energy Physics, Bj\\\"orn Spruck (1), Chinese Academy of Sciences), David M\\\"unchow (1), Jens S\\\"oren Lange (1), Jingzhou Zhao (2) ((1) II. Physikalisches Institut, Justus Liebig University Giessen, Thomas Ge{\\ss}ler (1), Wolfgang K\\\"uhn (1), Zhen'An Liu (2)","submitted_at":"2014-06-16T14:27:30Z","abstract_excerpt":"We present an FPGA-based online data reduction system for the pixel detector of the future Belle II experiment. The occupancy of the pixel detector is estimated at 3 %. This corresponds to a data output rate of more than 20 GB/s after zero suppression, dominated by background. The Online Selection Nodes (ONSEN) system aims to reduce the background data by a factor of 30. It consists of 33 MicroTCA cards, each equipped with a Xilinx Virtex-5 FPGA and 4 GiB DDR2 RAM. These cards are hosted by 9 AdvancedTCA carrier boards. The ONSEN system buffers the entire output data from the pixel detector fo"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1406.4028","kind":"arxiv","version":3},"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":"1406.4028","created_at":"2026-05-18T01:36:58.390016+00:00"},{"alias_kind":"arxiv_version","alias_value":"1406.4028v3","created_at":"2026-05-18T01:36:58.390016+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1406.4028","created_at":"2026-05-18T01:36:58.390016+00:00"},{"alias_kind":"pith_short_12","alias_value":"C6NDPYLRVFVW","created_at":"2026-05-18T12:28:22.404517+00:00"},{"alias_kind":"pith_short_16","alias_value":"C6NDPYLRVFVWM4MX","created_at":"2026-05-18T12:28:22.404517+00:00"},{"alias_kind":"pith_short_8","alias_value":"C6NDPYLR","created_at":"2026-05-18T12:28:22.404517+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/C6NDPYLRVFVWM4MXP45O5NMTUS","json":"https://pith.science/pith/C6NDPYLRVFVWM4MXP45O5NMTUS.json","graph_json":"https://pith.science/api/pith-number/C6NDPYLRVFVWM4MXP45O5NMTUS/graph.json","events_json":"https://pith.science/api/pith-number/C6NDPYLRVFVWM4MXP45O5NMTUS/events.json","paper":"https://pith.science/paper/C6NDPYLR"},"agent_actions":{"view_html":"https://pith.science/pith/C6NDPYLRVFVWM4MXP45O5NMTUS","download_json":"https://pith.science/pith/C6NDPYLRVFVWM4MXP45O5NMTUS.json","view_paper":"https://pith.science/paper/C6NDPYLR","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1406.4028&json=true","fetch_graph":"https://pith.science/api/pith-number/C6NDPYLRVFVWM4MXP45O5NMTUS/graph.json","fetch_events":"https://pith.science/api/pith-number/C6NDPYLRVFVWM4MXP45O5NMTUS/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/C6NDPYLRVFVWM4MXP45O5NMTUS/action/timestamp_anchor","attest_storage":"https://pith.science/pith/C6NDPYLRVFVWM4MXP45O5NMTUS/action/storage_attestation","attest_author":"https://pith.science/pith/C6NDPYLRVFVWM4MXP45O5NMTUS/action/author_attestation","sign_citation":"https://pith.science/pith/C6NDPYLRVFVWM4MXP45O5NMTUS/action/citation_signature","submit_replication":"https://pith.science/pith/C6NDPYLRVFVWM4MXP45O5NMTUS/action/replication_record"}},"created_at":"2026-05-18T01:36:58.390016+00:00","updated_at":"2026-05-18T01:36:58.390016+00:00"}