{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:XA52SO53MJO6ZEVMKNFCKZWV3F","short_pith_number":"pith:XA52SO53","canonical_record":{"source":{"id":"2112.00561","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2021-12-01T15:21:23Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"0d0e3c8f55e6452ad422944ff1d5eab203d910ace8b7570886e19db01c823039","abstract_canon_sha256":"f84fd461266af7f7366e186e081183835275668ce3a5b79307b70953281ae6f1"},"schema_version":"1.0"},"canonical_sha256":"b83ba93bbb625dec92ac534a2566d5d940e9b18bd030531174cf2af389a5b87a","source":{"kind":"arxiv","id":"2112.00561","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2112.00561","created_at":"2026-07-05T04:24:14Z"},{"alias_kind":"arxiv_version","alias_value":"2112.00561v3","created_at":"2026-07-05T04:24:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2112.00561","created_at":"2026-07-05T04:24:14Z"},{"alias_kind":"pith_short_12","alias_value":"XA52SO53MJO6","created_at":"2026-07-05T04:24:14Z"},{"alias_kind":"pith_short_16","alias_value":"XA52SO53MJO6ZEVM","created_at":"2026-07-05T04:24:14Z"},{"alias_kind":"pith_short_8","alias_value":"XA52SO53","created_at":"2026-07-05T04:24:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:XA52SO53MJO6ZEVMKNFCKZWV3F","target":"record","payload":{"canonical_record":{"source":{"id":"2112.00561","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2021-12-01T15:21:23Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"0d0e3c8f55e6452ad422944ff1d5eab203d910ace8b7570886e19db01c823039","abstract_canon_sha256":"f84fd461266af7f7366e186e081183835275668ce3a5b79307b70953281ae6f1"},"schema_version":"1.0"},"canonical_sha256":"b83ba93bbb625dec92ac534a2566d5d940e9b18bd030531174cf2af389a5b87a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:24:14.613282Z","signature_b64":"9pV84aDwB974fHrwrLuvZYEeOWBhC8XOM1VjKJYyeEF1C4Ycek9dMDCIOQ7ijBMlmPe6HNq7hxOT6+nduTWsAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b83ba93bbb625dec92ac534a2566d5d940e9b18bd030531174cf2af389a5b87a","last_reissued_at":"2026-07-05T04:24:14.612743Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:24:14.612743Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2112.00561","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T04:24:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HADbX8Elw0/Cd8O5sptDHqCDVY6neuaEhIv0LwFgKmw7EkLoWi1if2jWZDsz+mDtJs+DRx8HHvMAN6IjkXAnCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T15:50:59.301023Z"},"content_sha256":"31203812155d12542c0347278d6fe10e6dab5e827d5f70d8884577dd0416daba","schema_version":"1.0","event_id":"sha256:31203812155d12542c0347278d6fe10e6dab5e827d5f70d8884577dd0416daba"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:XA52SO53MJO6ZEVMKNFCKZWV3F","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Optimization of the Gain Layer Design of Ultra-Fast Silicon Detectors","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"physics.ins-det","authors_text":"Abraham Seiden, Federico Siviero, Francesco Ficorella, Giacomo Borghi, Gian Franco Dalla Betta, Giovanni Paternoster, Giulia Gioachin, Hartmut F. W. Sadrozinski, Luca Menzio, Lucio Pancheri, Marco Costa, Marco Ferrero, Marco Mandurrino, Marta Tornago, Matteo Centis Vignali, Maurizio Boscardin, Nicolo Cartiglia, Roberta Arcidiacono, Simone Mazza, Valentina Sola","submitted_at":"2021-12-01T15:21:23Z","abstract_excerpt":"In the past few years, the need of measuring accurately the spatial and temporal coordinates of the particles generated in high-energy physics experiments has spurred a strong R\\&D in the field of silicon sensors. Within these research activities, the so-called Ultra-Fast Silicon Detectors (UFSDs), silicon sensors optimized for timing based on the Low-Gain Avalanche Diode (LGAD) design, have been proposed and adopted by the CMS and ATLAS collaborations for their respective timing layers. The defining feature of the Ultra-Fast Silicon Detectors (UFSDs) is the internal multiplication mechanism, "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2112.00561","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2112.00561/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":"2026-07-05T04:24:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"T+el12Se8xkh1PBh2LafXCSWkYUPSIt2olRdY+R2kCWP8kHF1QRKAdVZ0D8RBQpufPaplKSmmybqEMTiUaLDDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T15:50:59.301631Z"},"content_sha256":"cae3632d7409f0b6203171c184ed7805b7c288dec9d9492659db53ca047a216b","schema_version":"1.0","event_id":"sha256:cae3632d7409f0b6203171c184ed7805b7c288dec9d9492659db53ca047a216b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XA52SO53MJO6ZEVMKNFCKZWV3F/bundle.json","state_url":"https://pith.science/pith/XA52SO53MJO6ZEVMKNFCKZWV3F/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XA52SO53MJO6ZEVMKNFCKZWV3F/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":"2026-08-07T15:50:59Z","links":{"resolver":"https://pith.science/pith/XA52SO53MJO6ZEVMKNFCKZWV3F","bundle":"https://pith.science/pith/XA52SO53MJO6ZEVMKNFCKZWV3F/bundle.json","state":"https://pith.science/pith/XA52SO53MJO6ZEVMKNFCKZWV3F/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XA52SO53MJO6ZEVMKNFCKZWV3F/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:XA52SO53MJO6ZEVMKNFCKZWV3F","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":"f84fd461266af7f7366e186e081183835275668ce3a5b79307b70953281ae6f1","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2021-12-01T15:21:23Z","title_canon_sha256":"0d0e3c8f55e6452ad422944ff1d5eab203d910ace8b7570886e19db01c823039"},"schema_version":"1.0","source":{"id":"2112.00561","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2112.00561","created_at":"2026-07-05T04:24:14Z"},{"alias_kind":"arxiv_version","alias_value":"2112.00561v3","created_at":"2026-07-05T04:24:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2112.00561","created_at":"2026-07-05T04:24:14Z"},{"alias_kind":"pith_short_12","alias_value":"XA52SO53MJO6","created_at":"2026-07-05T04:24:14Z"},{"alias_kind":"pith_short_16","alias_value":"XA52SO53MJO6ZEVM","created_at":"2026-07-05T04:24:14Z"},{"alias_kind":"pith_short_8","alias_value":"XA52SO53","created_at":"2026-07-05T04:24:14Z"}],"graph_snapshots":[{"event_id":"sha256:cae3632d7409f0b6203171c184ed7805b7c288dec9d9492659db53ca047a216b","target":"graph","created_at":"2026-07-05T04:24:14Z","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/2112.00561/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In the past few years, the need of measuring accurately the spatial and temporal coordinates of the particles generated in high-energy physics experiments has spurred a strong R\\&D in the field of silicon sensors. Within these research activities, the so-called Ultra-Fast Silicon Detectors (UFSDs), silicon sensors optimized for timing based on the Low-Gain Avalanche Diode (LGAD) design, have been proposed and adopted by the CMS and ATLAS collaborations for their respective timing layers. The defining feature of the Ultra-Fast Silicon Detectors (UFSDs) is the internal multiplication mechanism, ","authors_text":"Abraham Seiden, Federico Siviero, Francesco Ficorella, Giacomo Borghi, Gian Franco Dalla Betta, Giovanni Paternoster, Giulia Gioachin, Hartmut F. W. Sadrozinski, Luca Menzio, Lucio Pancheri, Marco Costa, Marco Ferrero, Marco Mandurrino, Marta Tornago, Matteo Centis Vignali, Maurizio Boscardin, Nicolo Cartiglia, Roberta Arcidiacono, Simone Mazza, Valentina Sola","cross_cats":["hep-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2021-12-01T15:21:23Z","title":"Optimization of the Gain Layer Design of Ultra-Fast Silicon Detectors"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2112.00561","kind":"arxiv","version":3},"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":"sha256:31203812155d12542c0347278d6fe10e6dab5e827d5f70d8884577dd0416daba","target":"record","created_at":"2026-07-05T04:24:14Z","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":"f84fd461266af7f7366e186e081183835275668ce3a5b79307b70953281ae6f1","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2021-12-01T15:21:23Z","title_canon_sha256":"0d0e3c8f55e6452ad422944ff1d5eab203d910ace8b7570886e19db01c823039"},"schema_version":"1.0","source":{"id":"2112.00561","kind":"arxiv","version":3}},"canonical_sha256":"b83ba93bbb625dec92ac534a2566d5d940e9b18bd030531174cf2af389a5b87a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b83ba93bbb625dec92ac534a2566d5d940e9b18bd030531174cf2af389a5b87a","first_computed_at":"2026-07-05T04:24:14.612743Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:24:14.612743Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9pV84aDwB974fHrwrLuvZYEeOWBhC8XOM1VjKJYyeEF1C4Ycek9dMDCIOQ7ijBMlmPe6HNq7hxOT6+nduTWsAw==","signature_status":"signed_v1","signed_at":"2026-07-05T04:24:14.613282Z","signed_message":"canonical_sha256_bytes"},"source_id":"2112.00561","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:31203812155d12542c0347278d6fe10e6dab5e827d5f70d8884577dd0416daba","sha256:cae3632d7409f0b6203171c184ed7805b7c288dec9d9492659db53ca047a216b"],"state_sha256":"151853f773ad9fe9ea949bdb24cf17390249b6430d5bf11b7369abaf8ee98666"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0/1BCxYRo+DkwzwY+w4Ql+x6RK18VBdO2WcchjKrfchDlV04iekFB5b8Kno0IdyahjUcTN6RLJTKw0slL/kxCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-07T15:50:59.306718Z","bundle_sha256":"4594946d355f77af183b32e9f6a9189070155e130bc63677fbf1413b496cfa9d"}}