{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:4AQ5DGWPKVVVQNTK3H5T2BCIS7","short_pith_number":"pith:4AQ5DGWP","canonical_record":{"source":{"id":"1101.3013","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2011-01-15T17:43:23Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"a7a3946667635a6fde143cb501115abd71c2bccb8c2a6c4bc62c72315ce6a334","abstract_canon_sha256":"b3b245bb1f4da3ee2e1fc70779c552cbbc7da01a6c76fb545feacfc338e84f3a"},"schema_version":"1.0"},"canonical_sha256":"e021d19acf556b58366ad9fb3d044897e7c2e93e715749880ce1e011655a602d","source":{"kind":"arxiv","id":"1101.3013","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1101.3013","created_at":"2026-05-18T02:22:57Z"},{"alias_kind":"arxiv_version","alias_value":"1101.3013v1","created_at":"2026-05-18T02:22:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1101.3013","created_at":"2026-05-18T02:22:57Z"},{"alias_kind":"pith_short_12","alias_value":"4AQ5DGWPKVVV","created_at":"2026-05-18T12:26:20Z"},{"alias_kind":"pith_short_16","alias_value":"4AQ5DGWPKVVVQNTK","created_at":"2026-05-18T12:26:20Z"},{"alias_kind":"pith_short_8","alias_value":"4AQ5DGWP","created_at":"2026-05-18T12:26:20Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:4AQ5DGWPKVVVQNTK3H5T2BCIS7","target":"record","payload":{"canonical_record":{"source":{"id":"1101.3013","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2011-01-15T17:43:23Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"a7a3946667635a6fde143cb501115abd71c2bccb8c2a6c4bc62c72315ce6a334","abstract_canon_sha256":"b3b245bb1f4da3ee2e1fc70779c552cbbc7da01a6c76fb545feacfc338e84f3a"},"schema_version":"1.0"},"canonical_sha256":"e021d19acf556b58366ad9fb3d044897e7c2e93e715749880ce1e011655a602d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:22:57.169484Z","signature_b64":"6oTUUMkgsJqk7Qq/Jl5x+ErcuIMZrrgSTvKhM27Rnga6ztMAb74ujQ5044X2g8/pSGneVCtl+N4Ft6zlgJQgDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e021d19acf556b58366ad9fb3d044897e7c2e93e715749880ce1e011655a602d","last_reissued_at":"2026-05-18T02:22:57.168960Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:22:57.168960Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1101.3013","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":"2026-05-18T02:22:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cZG210oXMd3SD2mX6c29wtrLmK8I2isR9LI1ear+04+L2tXDbNdIy/ljbUR9ztdgmoNX/vnCrQUkEuubSGLuDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T11:28:36.817480Z"},"content_sha256":"6d7c962fd66f9deaa081c9253e64ffb71b7c51ec0eb5306c541b7552d5ed4cfc","schema_version":"1.0","event_id":"sha256:6d7c962fd66f9deaa081c9253e64ffb71b7c51ec0eb5306c541b7552d5ed4cfc"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:4AQ5DGWPKVVVQNTK3H5T2BCIS7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Demonstration of a Lightguide Detector for Liquid Argon TPCs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"physics.ins-det","authors_text":"B.J.P. Jones, C. Ignarra, H.-K. Tanaka, J.M. Conrad, L. Bugel, T. Katori, T. Smidt","submitted_at":"2011-01-15T17:43:23Z","abstract_excerpt":"We report demonstration of light detection in liquid argon using an acrylic lightguide detector system. This opens the opportunity for development of an inexpensive, large-area light collection system for large liquid argon time projection chambers. The guides are constructed of acrylic, with TPB embedded in a surface coating with a matching index of refraction. We study the response to early scintillation light produced by a 5.3 MeV alpha. We measure coating responses from 7 to 8 PE on average, compared to an ideal expectation of 10 PE on average. We estimate the attenuation length of light a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1101.3013","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":"2026-05-18T02:22:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+Knt6984tS4/yFbTQiiAvPPI0maOeVX3fpKECxrVtn9KroQlo2Jg6//my34aeAHVBZMfk4gDaFt7OarTsEP3Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T11:28:36.818150Z"},"content_sha256":"4917a6a34b45088ece698c69e7329814e39992878aa176597bfbdf8e2e2abe7a","schema_version":"1.0","event_id":"sha256:4917a6a34b45088ece698c69e7329814e39992878aa176597bfbdf8e2e2abe7a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4AQ5DGWPKVVVQNTK3H5T2BCIS7/bundle.json","state_url":"https://pith.science/pith/4AQ5DGWPKVVVQNTK3H5T2BCIS7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4AQ5DGWPKVVVQNTK3H5T2BCIS7/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":"2026-05-30T11:28:36Z","links":{"resolver":"https://pith.science/pith/4AQ5DGWPKVVVQNTK3H5T2BCIS7","bundle":"https://pith.science/pith/4AQ5DGWPKVVVQNTK3H5T2BCIS7/bundle.json","state":"https://pith.science/pith/4AQ5DGWPKVVVQNTK3H5T2BCIS7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4AQ5DGWPKVVVQNTK3H5T2BCIS7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:4AQ5DGWPKVVVQNTK3H5T2BCIS7","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":"b3b245bb1f4da3ee2e1fc70779c552cbbc7da01a6c76fb545feacfc338e84f3a","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2011-01-15T17:43:23Z","title_canon_sha256":"a7a3946667635a6fde143cb501115abd71c2bccb8c2a6c4bc62c72315ce6a334"},"schema_version":"1.0","source":{"id":"1101.3013","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1101.3013","created_at":"2026-05-18T02:22:57Z"},{"alias_kind":"arxiv_version","alias_value":"1101.3013v1","created_at":"2026-05-18T02:22:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1101.3013","created_at":"2026-05-18T02:22:57Z"},{"alias_kind":"pith_short_12","alias_value":"4AQ5DGWPKVVV","created_at":"2026-05-18T12:26:20Z"},{"alias_kind":"pith_short_16","alias_value":"4AQ5DGWPKVVVQNTK","created_at":"2026-05-18T12:26:20Z"},{"alias_kind":"pith_short_8","alias_value":"4AQ5DGWP","created_at":"2026-05-18T12:26:20Z"}],"graph_snapshots":[{"event_id":"sha256:4917a6a34b45088ece698c69e7329814e39992878aa176597bfbdf8e2e2abe7a","target":"graph","created_at":"2026-05-18T02:22:57Z","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 demonstration of light detection in liquid argon using an acrylic lightguide detector system. This opens the opportunity for development of an inexpensive, large-area light collection system for large liquid argon time projection chambers. The guides are constructed of acrylic, with TPB embedded in a surface coating with a matching index of refraction. We study the response to early scintillation light produced by a 5.3 MeV alpha. We measure coating responses from 7 to 8 PE on average, compared to an ideal expectation of 10 PE on average. We estimate the attenuation length of light a","authors_text":"B.J.P. Jones, C. Ignarra, H.-K. Tanaka, J.M. Conrad, L. Bugel, T. Katori, T. Smidt","cross_cats":["hep-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2011-01-15T17:43:23Z","title":"Demonstration of a Lightguide Detector for Liquid Argon TPCs"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1101.3013","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":"sha256:6d7c962fd66f9deaa081c9253e64ffb71b7c51ec0eb5306c541b7552d5ed4cfc","target":"record","created_at":"2026-05-18T02:22:57Z","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":"b3b245bb1f4da3ee2e1fc70779c552cbbc7da01a6c76fb545feacfc338e84f3a","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2011-01-15T17:43:23Z","title_canon_sha256":"a7a3946667635a6fde143cb501115abd71c2bccb8c2a6c4bc62c72315ce6a334"},"schema_version":"1.0","source":{"id":"1101.3013","kind":"arxiv","version":1}},"canonical_sha256":"e021d19acf556b58366ad9fb3d044897e7c2e93e715749880ce1e011655a602d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e021d19acf556b58366ad9fb3d044897e7c2e93e715749880ce1e011655a602d","first_computed_at":"2026-05-18T02:22:57.168960Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:22:57.168960Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6oTUUMkgsJqk7Qq/Jl5x+ErcuIMZrrgSTvKhM27Rnga6ztMAb74ujQ5044X2g8/pSGneVCtl+N4Ft6zlgJQgDA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:22:57.169484Z","signed_message":"canonical_sha256_bytes"},"source_id":"1101.3013","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6d7c962fd66f9deaa081c9253e64ffb71b7c51ec0eb5306c541b7552d5ed4cfc","sha256:4917a6a34b45088ece698c69e7329814e39992878aa176597bfbdf8e2e2abe7a"],"state_sha256":"8afa96d75314e58041507941a4e34182d57df69863cb617c3ad9fb51f8ecc6ff"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5BHcN+HuRddsh8IVhy+6MIGvtrxyIlUvIWFsVubyBP9WxOrtD5k9o9ih9ZAaQQs49PJbBuV/oued1WaTVHbpDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T11:28:36.822211Z","bundle_sha256":"0108b1636dd4214409336d89314f91a79d84a62976a27bf4d15829153742d236"}}