{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:AOVUKFSRM4HSCVQQFWDI5H42EO","short_pith_number":"pith:AOVUKFSR","canonical_record":{"source":{"id":"1112.1915","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2011-12-08T19:18:34Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"9548883c6a7716eb9e9d0e6434cf92d8758b72096cce2a6ad373d163cf382663","abstract_canon_sha256":"fb95aad66031a2bf4e8c1a75bb12aa772dc2e6d7a5a747071b4cd20f7742d649"},"schema_version":"1.0"},"canonical_sha256":"03ab451651670f2156102d868e9f9a239d29d1aa3e7d1f379b91e57ac14a57c4","source":{"kind":"arxiv","id":"1112.1915","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1112.1915","created_at":"2026-05-18T01:59:14Z"},{"alias_kind":"arxiv_version","alias_value":"1112.1915v1","created_at":"2026-05-18T01:59:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1112.1915","created_at":"2026-05-18T01:59:14Z"},{"alias_kind":"pith_short_12","alias_value":"AOVUKFSRM4HS","created_at":"2026-05-18T12:26:24Z"},{"alias_kind":"pith_short_16","alias_value":"AOVUKFSRM4HSCVQQ","created_at":"2026-05-18T12:26:24Z"},{"alias_kind":"pith_short_8","alias_value":"AOVUKFSR","created_at":"2026-05-18T12:26:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:AOVUKFSRM4HSCVQQFWDI5H42EO","target":"record","payload":{"canonical_record":{"source":{"id":"1112.1915","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2011-12-08T19:18:34Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"9548883c6a7716eb9e9d0e6434cf92d8758b72096cce2a6ad373d163cf382663","abstract_canon_sha256":"fb95aad66031a2bf4e8c1a75bb12aa772dc2e6d7a5a747071b4cd20f7742d649"},"schema_version":"1.0"},"canonical_sha256":"03ab451651670f2156102d868e9f9a239d29d1aa3e7d1f379b91e57ac14a57c4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:59:14.898836Z","signature_b64":"EB7zikfIwAK4xK+DYDVbgOuAXzpyrdHmIHRT1Dvrr0wkr2uXZS3ZTMMf9G244t2MoJ3co0EoPbaAqx2CNWgJDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"03ab451651670f2156102d868e9f9a239d29d1aa3e7d1f379b91e57ac14a57c4","last_reissued_at":"2026-05-18T01:59:14.898088Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:59:14.898088Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1112.1915","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":"2026-05-18T01:59:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bnspExz5OX3XuKLWd3EuLzCGsCfYKaEqHoR41bLlKZP0QQIfTBJw0vgzVzjdF6yphia4mnlMXkwBieYXDl1UDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-20T00:44:27.842717Z"},"content_sha256":"045ff49f16e238fd042847aefc51d35279439b4f77a98e41236a4303bf7afd8a","schema_version":"1.0","event_id":"sha256:045ff49f16e238fd042847aefc51d35279439b4f77a98e41236a4303bf7afd8a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:AOVUKFSRM4HSCVQQFWDI5H42EO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"THGEM-based detectors for sampling elements in DHCAL: laboratory and beam evaluation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"physics.ins-det","authors_text":"A. Breskin, A. Rubin, A. White, C. A. B. Oliveira, C. D. R. Azevedo, D. Freytag, D. S. Covita, E. Oliveri, G. Haller, H. Natal da Luz, J. F. C. A. Veloso, J. M. F. dos Santos, J. Yu, L. Arazi, M. Breidenbach, M. Cortesi, M. Pitt, R. Chechik, R. Herbst, S. Park","submitted_at":"2011-12-08T19:18:34Z","abstract_excerpt":"We report on the results of an extensive R&D program aimed at the evaluation of Thick-Gas Electron Multipliers (THGEM) as potential active elements for Digital Hadron Calorimetry (DHCAL). Results are presented on efficiency, pad multiplicity and discharge probability of a 10x10 cm2 prototype detector with 1 cm2 readout pads. The detector is comprised of single- or double-THGEM multipliers coupled to the pad electrode either directly or via a resistive anode. Investigations employing standard discrete electronics and the KPiX readout system have been carried out both under laboratory conditions"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1112.1915","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":"2026-05-18T01:59:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BVWvYzdNsCTfp0fJRnrlJ0dk2HHrKOiws1lGoqpB9tn33eiTthM7ZKgjSoD3jNnZT8QifAE/RJxqk9SW6DgPBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-20T00:44:27.843179Z"},"content_sha256":"49d52a80674d83e22dfb6d402dcb0de23eeff8dea5cb858094e9173ddbca1a1b","schema_version":"1.0","event_id":"sha256:49d52a80674d83e22dfb6d402dcb0de23eeff8dea5cb858094e9173ddbca1a1b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AOVUKFSRM4HSCVQQFWDI5H42EO/bundle.json","state_url":"https://pith.science/pith/AOVUKFSRM4HSCVQQFWDI5H42EO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AOVUKFSRM4HSCVQQFWDI5H42EO/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":"2026-05-20T00:44:27Z","links":{"resolver":"https://pith.science/pith/AOVUKFSRM4HSCVQQFWDI5H42EO","bundle":"https://pith.science/pith/AOVUKFSRM4HSCVQQFWDI5H42EO/bundle.json","state":"https://pith.science/pith/AOVUKFSRM4HSCVQQFWDI5H42EO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AOVUKFSRM4HSCVQQFWDI5H42EO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:AOVUKFSRM4HSCVQQFWDI5H42EO","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":"fb95aad66031a2bf4e8c1a75bb12aa772dc2e6d7a5a747071b4cd20f7742d649","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2011-12-08T19:18:34Z","title_canon_sha256":"9548883c6a7716eb9e9d0e6434cf92d8758b72096cce2a6ad373d163cf382663"},"schema_version":"1.0","source":{"id":"1112.1915","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1112.1915","created_at":"2026-05-18T01:59:14Z"},{"alias_kind":"arxiv_version","alias_value":"1112.1915v1","created_at":"2026-05-18T01:59:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1112.1915","created_at":"2026-05-18T01:59:14Z"},{"alias_kind":"pith_short_12","alias_value":"AOVUKFSRM4HS","created_at":"2026-05-18T12:26:24Z"},{"alias_kind":"pith_short_16","alias_value":"AOVUKFSRM4HSCVQQ","created_at":"2026-05-18T12:26:24Z"},{"alias_kind":"pith_short_8","alias_value":"AOVUKFSR","created_at":"2026-05-18T12:26:24Z"}],"graph_snapshots":[{"event_id":"sha256:49d52a80674d83e22dfb6d402dcb0de23eeff8dea5cb858094e9173ddbca1a1b","target":"graph","created_at":"2026-05-18T01:59:14Z","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"},"paper":{"abstract_excerpt":"We report on the results of an extensive R&D program aimed at the evaluation of Thick-Gas Electron Multipliers (THGEM) as potential active elements for Digital Hadron Calorimetry (DHCAL). Results are presented on efficiency, pad multiplicity and discharge probability of a 10x10 cm2 prototype detector with 1 cm2 readout pads. The detector is comprised of single- or double-THGEM multipliers coupled to the pad electrode either directly or via a resistive anode. Investigations employing standard discrete electronics and the KPiX readout system have been carried out both under laboratory conditions","authors_text":"A. Breskin, A. Rubin, A. White, C. A. B. Oliveira, C. D. R. Azevedo, D. Freytag, D. S. Covita, E. Oliveri, G. Haller, H. Natal da Luz, J. F. C. A. Veloso, J. M. F. dos Santos, J. Yu, L. Arazi, M. Breidenbach, M. Cortesi, M. Pitt, R. Chechik, R. Herbst, S. Park","cross_cats":["hep-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2011-12-08T19:18:34Z","title":"THGEM-based detectors for sampling elements in DHCAL: laboratory and beam evaluation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1112.1915","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":"sha256:045ff49f16e238fd042847aefc51d35279439b4f77a98e41236a4303bf7afd8a","target":"record","created_at":"2026-05-18T01:59:14Z","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":"fb95aad66031a2bf4e8c1a75bb12aa772dc2e6d7a5a747071b4cd20f7742d649","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2011-12-08T19:18:34Z","title_canon_sha256":"9548883c6a7716eb9e9d0e6434cf92d8758b72096cce2a6ad373d163cf382663"},"schema_version":"1.0","source":{"id":"1112.1915","kind":"arxiv","version":1}},"canonical_sha256":"03ab451651670f2156102d868e9f9a239d29d1aa3e7d1f379b91e57ac14a57c4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"03ab451651670f2156102d868e9f9a239d29d1aa3e7d1f379b91e57ac14a57c4","first_computed_at":"2026-05-18T01:59:14.898088Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:59:14.898088Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"EB7zikfIwAK4xK+DYDVbgOuAXzpyrdHmIHRT1Dvrr0wkr2uXZS3ZTMMf9G244t2MoJ3co0EoPbaAqx2CNWgJDA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:59:14.898836Z","signed_message":"canonical_sha256_bytes"},"source_id":"1112.1915","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:045ff49f16e238fd042847aefc51d35279439b4f77a98e41236a4303bf7afd8a","sha256:49d52a80674d83e22dfb6d402dcb0de23eeff8dea5cb858094e9173ddbca1a1b"],"state_sha256":"607707d823f14b04018ae26100050a6f5535af97aabd5bad58695471f4b8cc92"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"S/nxUxFns26m2hCMEwt4VqHCBWIlYUd1fcmWBSLjrt8G+ETZh1XmztjdyKXCJ4jxKb7NchvDu4H6dcnrCKtOAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-20T00:44:27.845938Z","bundle_sha256":"055246b3d94cda4f972df81eb586c406c2d2e3fe49eb8b9dbc18cf38b31f396e"}}