{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2007:FIR2W4SQAQ4VZ4VJTTQE35ZIVH","short_pith_number":"pith:FIR2W4SQ","canonical_record":{"source":{"id":"physics/0702130","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"physics.ins-det","submitted_at":"2007-02-15T18:39:14Z","cross_cats_sorted":["physics.atom-ph"],"title_canon_sha256":"ca1a75f22159c93a636cc0f872761db6196dba1d80db9396aad5060bc2ca84a0","abstract_canon_sha256":"1e0255fc4e5adfa2163e36a27cd47391048328ffabbc87a50b7625f32b52bc85"},"schema_version":"1.0"},"canonical_sha256":"2a23ab725004395cf2a99ce04df728a9ffdd1501576d8a3ab5da47e0931383b0","source":{"kind":"arxiv","id":"physics/0702130","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"physics/0702130","created_at":"2026-05-18T02:35:07Z"},{"alias_kind":"arxiv_version","alias_value":"physics/0702130v1","created_at":"2026-05-18T02:35:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.physics/0702130","created_at":"2026-05-18T02:35:07Z"},{"alias_kind":"pith_short_12","alias_value":"FIR2W4SQAQ4V","created_at":"2026-05-18T12:25:55Z"},{"alias_kind":"pith_short_16","alias_value":"FIR2W4SQAQ4VZ4VJ","created_at":"2026-05-18T12:25:55Z"},{"alias_kind":"pith_short_8","alias_value":"FIR2W4SQ","created_at":"2026-05-18T12:25:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2007:FIR2W4SQAQ4VZ4VJTTQE35ZIVH","target":"record","payload":{"canonical_record":{"source":{"id":"physics/0702130","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"physics.ins-det","submitted_at":"2007-02-15T18:39:14Z","cross_cats_sorted":["physics.atom-ph"],"title_canon_sha256":"ca1a75f22159c93a636cc0f872761db6196dba1d80db9396aad5060bc2ca84a0","abstract_canon_sha256":"1e0255fc4e5adfa2163e36a27cd47391048328ffabbc87a50b7625f32b52bc85"},"schema_version":"1.0"},"canonical_sha256":"2a23ab725004395cf2a99ce04df728a9ffdd1501576d8a3ab5da47e0931383b0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:35:07.178888Z","signature_b64":"TgEqi2StrWVUqVtLPUMVPTrY6fkStCs2R/m8xuJo+X+cTJ0Hf/zQZA5408l4hIUgJ9/runIxq7bxbbYj6+AZBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2a23ab725004395cf2a99ce04df728a9ffdd1501576d8a3ab5da47e0931383b0","last_reissued_at":"2026-05-18T02:35:07.178345Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:35:07.178345Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"physics/0702130","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":"2026-05-18T02:35:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hqLUqEjf1NntVyBI94iwzi0mY8CFSH8O5IPgDHYH+1iA/0nJCnPSvVHtcT2bCt6I2T0+fh1yD5Nss+jMr0iqAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T03:59:52.795538Z"},"content_sha256":"a4e7452c9f39db5d3731ee9852600378facd5a7b43238eca79a8b0235541a3f0","schema_version":"1.0","event_id":"sha256:a4e7452c9f39db5d3731ee9852600378facd5a7b43238eca79a8b0235541a3f0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2007:FIR2W4SQAQ4VZ4VJTTQE35ZIVH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Characterization of large area avalanche photodiodes in X-ray and VUV-light detection","license":"","headline":"","cross_cats":["physics.atom-ph"],"primary_cat":"physics.ins-det","authors_text":"A. Antognini, C.A.N. Conde, C.M.B. Monteiro, D. Taqqu, F.D. Amaro, F. Kottmann, F. Mulhauser, J.A.M. Lopes, J.F.C.A. Veloso, J.M.F. dos Santos, J.M.R. Cardoso, L.A. Schaller, L. Ludhova, L.M.P. Fernandes, O. Huot, P.E. Knowles, R. Pohl","submitted_at":"2007-02-15T18:39:14Z","abstract_excerpt":"The present manuscript summarizes novel studies on the application of large area avalanche photodiodes (LAAPDs) to the detection of X-rays and vacuum ultraviolet (VUV) light. The operational characteristics of four different LAAPDs manufactured by Advanced Photonix Inc., with active areas of 80 and 200 mm^2 were investigated for X-ray detection at room temperature. The best energy resolution was found to be in the 10-18% range for 5.9 keV X-rays. The LAAPD, being compact, simple to operate and with high counting rate capability (up to about 10^5/s), proved to be useful in several applications,"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"physics/0702130","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:35:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AxnXrcSZ9HaMDWnlVfQWEo644dfrpIGX9bLxPXTu000i6wXFuD3U18At1UElqNAWsh1l2hamtIevwT+frlZdBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T03:59:52.796239Z"},"content_sha256":"d64288155575c1f16a95b5cd6ce609f51022efd1926b7cbe91ebc99b042a1c5a","schema_version":"1.0","event_id":"sha256:d64288155575c1f16a95b5cd6ce609f51022efd1926b7cbe91ebc99b042a1c5a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FIR2W4SQAQ4VZ4VJTTQE35ZIVH/bundle.json","state_url":"https://pith.science/pith/FIR2W4SQAQ4VZ4VJTTQE35ZIVH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FIR2W4SQAQ4VZ4VJTTQE35ZIVH/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":"2026-05-27T03:59:52Z","links":{"resolver":"https://pith.science/pith/FIR2W4SQAQ4VZ4VJTTQE35ZIVH","bundle":"https://pith.science/pith/FIR2W4SQAQ4VZ4VJTTQE35ZIVH/bundle.json","state":"https://pith.science/pith/FIR2W4SQAQ4VZ4VJTTQE35ZIVH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FIR2W4SQAQ4VZ4VJTTQE35ZIVH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2007:FIR2W4SQAQ4VZ4VJTTQE35ZIVH","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":"1e0255fc4e5adfa2163e36a27cd47391048328ffabbc87a50b7625f32b52bc85","cross_cats_sorted":["physics.atom-ph"],"license":"","primary_cat":"physics.ins-det","submitted_at":"2007-02-15T18:39:14Z","title_canon_sha256":"ca1a75f22159c93a636cc0f872761db6196dba1d80db9396aad5060bc2ca84a0"},"schema_version":"1.0","source":{"id":"physics/0702130","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"physics/0702130","created_at":"2026-05-18T02:35:07Z"},{"alias_kind":"arxiv_version","alias_value":"physics/0702130v1","created_at":"2026-05-18T02:35:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.physics/0702130","created_at":"2026-05-18T02:35:07Z"},{"alias_kind":"pith_short_12","alias_value":"FIR2W4SQAQ4V","created_at":"2026-05-18T12:25:55Z"},{"alias_kind":"pith_short_16","alias_value":"FIR2W4SQAQ4VZ4VJ","created_at":"2026-05-18T12:25:55Z"},{"alias_kind":"pith_short_8","alias_value":"FIR2W4SQ","created_at":"2026-05-18T12:25:55Z"}],"graph_snapshots":[{"event_id":"sha256:d64288155575c1f16a95b5cd6ce609f51022efd1926b7cbe91ebc99b042a1c5a","target":"graph","created_at":"2026-05-18T02:35:07Z","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"},"paper":{"abstract_excerpt":"The present manuscript summarizes novel studies on the application of large area avalanche photodiodes (LAAPDs) to the detection of X-rays and vacuum ultraviolet (VUV) light. The operational characteristics of four different LAAPDs manufactured by Advanced Photonix Inc., with active areas of 80 and 200 mm^2 were investigated for X-ray detection at room temperature. The best energy resolution was found to be in the 10-18% range for 5.9 keV X-rays. The LAAPD, being compact, simple to operate and with high counting rate capability (up to about 10^5/s), proved to be useful in several applications,","authors_text":"A. Antognini, C.A.N. Conde, C.M.B. Monteiro, D. Taqqu, F.D. Amaro, F. Kottmann, F. Mulhauser, J.A.M. Lopes, J.F.C.A. Veloso, J.M.F. dos Santos, J.M.R. Cardoso, L.A. Schaller, L. Ludhova, L.M.P. Fernandes, O. Huot, P.E. Knowles, R. Pohl","cross_cats":["physics.atom-ph"],"headline":"","license":"","primary_cat":"physics.ins-det","submitted_at":"2007-02-15T18:39:14Z","title":"Characterization of large area avalanche photodiodes in X-ray and VUV-light detection"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"physics/0702130","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:a4e7452c9f39db5d3731ee9852600378facd5a7b43238eca79a8b0235541a3f0","target":"record","created_at":"2026-05-18T02:35:07Z","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":"1e0255fc4e5adfa2163e36a27cd47391048328ffabbc87a50b7625f32b52bc85","cross_cats_sorted":["physics.atom-ph"],"license":"","primary_cat":"physics.ins-det","submitted_at":"2007-02-15T18:39:14Z","title_canon_sha256":"ca1a75f22159c93a636cc0f872761db6196dba1d80db9396aad5060bc2ca84a0"},"schema_version":"1.0","source":{"id":"physics/0702130","kind":"arxiv","version":1}},"canonical_sha256":"2a23ab725004395cf2a99ce04df728a9ffdd1501576d8a3ab5da47e0931383b0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2a23ab725004395cf2a99ce04df728a9ffdd1501576d8a3ab5da47e0931383b0","first_computed_at":"2026-05-18T02:35:07.178345Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:35:07.178345Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"TgEqi2StrWVUqVtLPUMVPTrY6fkStCs2R/m8xuJo+X+cTJ0Hf/zQZA5408l4hIUgJ9/runIxq7bxbbYj6+AZBw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:35:07.178888Z","signed_message":"canonical_sha256_bytes"},"source_id":"physics/0702130","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a4e7452c9f39db5d3731ee9852600378facd5a7b43238eca79a8b0235541a3f0","sha256:d64288155575c1f16a95b5cd6ce609f51022efd1926b7cbe91ebc99b042a1c5a"],"state_sha256":"71ee14853e0e638eeb18b958adc8296dfe6ac98ffd47cf70a5040b56b51aa5e6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/kC3cqNZpOgweR4TNDaLDL1A3oFFYDicBs0VC48d76g+eiR2R3VUaiPU70EqG3rLH5PhebGNndjnNRtf5tmADg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T03:59:52.800106Z","bundle_sha256":"797ab97da4ea34b9f26e10fe1cf872f01e3312f4dcbafaadafddf591e97adb43"}}