{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:PQMDM7GBVIVZKJWWQHOCDSOBK2","short_pith_number":"pith:PQMDM7GB","canonical_record":{"source":{"id":"1104.0758","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2011-04-05T07:59:59Z","cross_cats_sorted":["hep-ex","nucl-ex"],"title_canon_sha256":"9fd08d79b57fddf198b2032e3cc77fa57a3758f0622e19ab7b079d0d45972466","abstract_canon_sha256":"cee0f0200161ab396134d1ede92d83e530fc122413c8f8fde469465a48daf367"},"schema_version":"1.0"},"canonical_sha256":"7c18367cc1aa2b9526d681dc21c9c1568e45cb948abb5959cffb3b38bc1584b6","source":{"kind":"arxiv","id":"1104.0758","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1104.0758","created_at":"2026-05-18T04:19:43Z"},{"alias_kind":"arxiv_version","alias_value":"1104.0758v2","created_at":"2026-05-18T04:19:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1104.0758","created_at":"2026-05-18T04:19:43Z"},{"alias_kind":"pith_short_12","alias_value":"PQMDM7GBVIVZ","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_16","alias_value":"PQMDM7GBVIVZKJWW","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_8","alias_value":"PQMDM7GB","created_at":"2026-05-18T12:26:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:PQMDM7GBVIVZKJWWQHOCDSOBK2","target":"record","payload":{"canonical_record":{"source":{"id":"1104.0758","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2011-04-05T07:59:59Z","cross_cats_sorted":["hep-ex","nucl-ex"],"title_canon_sha256":"9fd08d79b57fddf198b2032e3cc77fa57a3758f0622e19ab7b079d0d45972466","abstract_canon_sha256":"cee0f0200161ab396134d1ede92d83e530fc122413c8f8fde469465a48daf367"},"schema_version":"1.0"},"canonical_sha256":"7c18367cc1aa2b9526d681dc21c9c1568e45cb948abb5959cffb3b38bc1584b6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:19:43.116469Z","signature_b64":"lUhUHtMP/m/1I5K7ortRIil7yPgYjge2NC4VSDMSK553+5A77qoowRJXrGTgN7AD3y5eASIvmtdXKq1XaE0JAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7c18367cc1aa2b9526d681dc21c9c1568e45cb948abb5959cffb3b38bc1584b6","last_reissued_at":"2026-05-18T04:19:43.115741Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:19:43.115741Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1104.0758","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:19:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jBg49jKIQHZuapHPfC/+Tzst1N+QfoiQpL1rlp2FJPKDI4A0/xyPIBlCsyxvDzPxmLMqePeiOE2U+RMpZsgOCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T20:41:43.223825Z"},"content_sha256":"5b21a383ad1bba548cedad3e84ac4abf922fe254af371df7f7f0a533eb181a85","schema_version":"1.0","event_id":"sha256:5b21a383ad1bba548cedad3e84ac4abf922fe254af371df7f7f0a533eb181a85"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:PQMDM7GBVIVZKJWWQHOCDSOBK2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Qualification Tests of 474 Photomultiplier Tubes for the Inner Detector of the Double Chooz Experiment","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex","nucl-ex"],"primary_cat":"physics.ins-det","authors_text":"A. St\\\"uken, C. Bauer, C. Langbrandtner, C. Wiebusch, E. Borger, F. Kaether, K. J\\\"anner, M. Lindner, M. Reissfelder, R. Hofacker, S. Lucht, S. Sch\\\"onert","submitted_at":"2011-04-05T07:59:59Z","abstract_excerpt":"The hemispherical 10\" photomultiplier tube (PMT) R7081 from Hamamatsu Photonics K.K. (HPK) is used in various experiments in particle and astroparticle physics. We describe the test and calibration of 474 PMTs for the reactor antineutrino experiment Double Chooz. The unique test setup at Max-Planck-Institut f\\\"ur Kernphysik Heidelberg (MPIK) allows one to calibrate 30 PMTs simultaneously and to characterize the single photo electron response, transit time spread, linear behaviour and saturation effects, photon detection efficiency and high voltage calibration."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1104.0758","kind":"arxiv","version":2},"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":"2026-05-18T04:19:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ihlJIhtWZ/Vwtkrl6t+wbnfpU3Ch3VRuOZlWX60h5y0C5zQWIH4OFL1fClfwql4hmmfMIG3+TxXbCkYaN60hCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T20:41:43.224179Z"},"content_sha256":"4307f0a6050035238e04a6d07a6589dc297ed03b7900fe3a7ae9f048f3f7af91","schema_version":"1.0","event_id":"sha256:4307f0a6050035238e04a6d07a6589dc297ed03b7900fe3a7ae9f048f3f7af91"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PQMDM7GBVIVZKJWWQHOCDSOBK2/bundle.json","state_url":"https://pith.science/pith/PQMDM7GBVIVZKJWWQHOCDSOBK2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PQMDM7GBVIVZKJWWQHOCDSOBK2/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":"2026-06-03T20:41:43Z","links":{"resolver":"https://pith.science/pith/PQMDM7GBVIVZKJWWQHOCDSOBK2","bundle":"https://pith.science/pith/PQMDM7GBVIVZKJWWQHOCDSOBK2/bundle.json","state":"https://pith.science/pith/PQMDM7GBVIVZKJWWQHOCDSOBK2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PQMDM7GBVIVZKJWWQHOCDSOBK2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:PQMDM7GBVIVZKJWWQHOCDSOBK2","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":"cee0f0200161ab396134d1ede92d83e530fc122413c8f8fde469465a48daf367","cross_cats_sorted":["hep-ex","nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2011-04-05T07:59:59Z","title_canon_sha256":"9fd08d79b57fddf198b2032e3cc77fa57a3758f0622e19ab7b079d0d45972466"},"schema_version":"1.0","source":{"id":"1104.0758","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1104.0758","created_at":"2026-05-18T04:19:43Z"},{"alias_kind":"arxiv_version","alias_value":"1104.0758v2","created_at":"2026-05-18T04:19:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1104.0758","created_at":"2026-05-18T04:19:43Z"},{"alias_kind":"pith_short_12","alias_value":"PQMDM7GBVIVZ","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_16","alias_value":"PQMDM7GBVIVZKJWW","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_8","alias_value":"PQMDM7GB","created_at":"2026-05-18T12:26:39Z"}],"graph_snapshots":[{"event_id":"sha256:4307f0a6050035238e04a6d07a6589dc297ed03b7900fe3a7ae9f048f3f7af91","target":"graph","created_at":"2026-05-18T04:19:43Z","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 hemispherical 10\" photomultiplier tube (PMT) R7081 from Hamamatsu Photonics K.K. (HPK) is used in various experiments in particle and astroparticle physics. We describe the test and calibration of 474 PMTs for the reactor antineutrino experiment Double Chooz. The unique test setup at Max-Planck-Institut f\\\"ur Kernphysik Heidelberg (MPIK) allows one to calibrate 30 PMTs simultaneously and to characterize the single photo electron response, transit time spread, linear behaviour and saturation effects, photon detection efficiency and high voltage calibration.","authors_text":"A. St\\\"uken, C. Bauer, C. Langbrandtner, C. Wiebusch, E. Borger, F. Kaether, K. J\\\"anner, M. Lindner, M. Reissfelder, R. Hofacker, S. Lucht, S. Sch\\\"onert","cross_cats":["hep-ex","nucl-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2011-04-05T07:59:59Z","title":"Qualification Tests of 474 Photomultiplier Tubes for the Inner Detector of the Double Chooz Experiment"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1104.0758","kind":"arxiv","version":2},"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":"sha256:5b21a383ad1bba548cedad3e84ac4abf922fe254af371df7f7f0a533eb181a85","target":"record","created_at":"2026-05-18T04:19:43Z","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":"cee0f0200161ab396134d1ede92d83e530fc122413c8f8fde469465a48daf367","cross_cats_sorted":["hep-ex","nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2011-04-05T07:59:59Z","title_canon_sha256":"9fd08d79b57fddf198b2032e3cc77fa57a3758f0622e19ab7b079d0d45972466"},"schema_version":"1.0","source":{"id":"1104.0758","kind":"arxiv","version":2}},"canonical_sha256":"7c18367cc1aa2b9526d681dc21c9c1568e45cb948abb5959cffb3b38bc1584b6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7c18367cc1aa2b9526d681dc21c9c1568e45cb948abb5959cffb3b38bc1584b6","first_computed_at":"2026-05-18T04:19:43.115741Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:19:43.115741Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"lUhUHtMP/m/1I5K7ortRIil7yPgYjge2NC4VSDMSK553+5A77qoowRJXrGTgN7AD3y5eASIvmtdXKq1XaE0JAw==","signature_status":"signed_v1","signed_at":"2026-05-18T04:19:43.116469Z","signed_message":"canonical_sha256_bytes"},"source_id":"1104.0758","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5b21a383ad1bba548cedad3e84ac4abf922fe254af371df7f7f0a533eb181a85","sha256:4307f0a6050035238e04a6d07a6589dc297ed03b7900fe3a7ae9f048f3f7af91"],"state_sha256":"a6fa89099aaf4babeebef63ac2eb6f4f32730b8890aa83afb0d83c57ae31d014"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7/H/gNGNxKqFXznpe2HwpsnQ1KRBkKkvGCTcUD4qzJfDfvr5Hl9sPzCwyyg28Fz3p+EG+vJ19OcFvYrHarXHCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T20:41:43.226413Z","bundle_sha256":"d7e8605039da112c422d211e72589a5ded86874faaf93cf0de37f3c5ec370135"}}