{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:PIZZMXENJDJ2SPCCHH4QSTAXUT","short_pith_number":"pith:PIZZMXEN","canonical_record":{"source":{"id":"1706.06831","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2017-06-21T11:35:32Z","cross_cats_sorted":["hep-ex","nucl-ex"],"title_canon_sha256":"b525bd2f1e37b22554411389fe2ae3cd0fda7db5fe5fa067b566bb4b79d299c3","abstract_canon_sha256":"2a118f8651189106fc0c503bef5a0fbee7b1384a584b790ef9f6592ec1ab38ca"},"schema_version":"1.0"},"canonical_sha256":"7a33965c8d48d3a93c4239f9094c17a4e2217bca068bdf460778116c82bb99f8","source":{"kind":"arxiv","id":"1706.06831","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1706.06831","created_at":"2026-05-18T00:21:57Z"},{"alias_kind":"arxiv_version","alias_value":"1706.06831v2","created_at":"2026-05-18T00:21:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1706.06831","created_at":"2026-05-18T00:21:57Z"},{"alias_kind":"pith_short_12","alias_value":"PIZZMXENJDJ2","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_16","alias_value":"PIZZMXENJDJ2SPCC","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_8","alias_value":"PIZZMXEN","created_at":"2026-05-18T12:31:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:PIZZMXENJDJ2SPCCHH4QSTAXUT","target":"record","payload":{"canonical_record":{"source":{"id":"1706.06831","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2017-06-21T11:35:32Z","cross_cats_sorted":["hep-ex","nucl-ex"],"title_canon_sha256":"b525bd2f1e37b22554411389fe2ae3cd0fda7db5fe5fa067b566bb4b79d299c3","abstract_canon_sha256":"2a118f8651189106fc0c503bef5a0fbee7b1384a584b790ef9f6592ec1ab38ca"},"schema_version":"1.0"},"canonical_sha256":"7a33965c8d48d3a93c4239f9094c17a4e2217bca068bdf460778116c82bb99f8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:21:57.030860Z","signature_b64":"VilgGar/jDxcPdQ6EhrOCVtGvnSss8FJzz8eypHdYN1VBPjiO0dW1UbKSmPg7R3PFdg954GMG2yG5SJIX8ezCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7a33965c8d48d3a93c4239f9094c17a4e2217bca068bdf460778116c82bb99f8","last_reissued_at":"2026-05-18T00:21:57.030187Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:21:57.030187Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1706.06831","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":"2026-05-18T00:21:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6UwITo4xnk2Sfk/iUichZjRdA9LnV/0jhssRBFUjgPnaIVL/mRmRqROCXyqlsd9VgyhgOQIUwg7ntEjyGmifCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T22:30:54.094883Z"},"content_sha256":"1b33be3357d90306cfe751efc2d648ebd6f0d2437daf4b9f63be86ae026c5f14","schema_version":"1.0","event_id":"sha256:1b33be3357d90306cfe751efc2d648ebd6f0d2437daf4b9f63be86ae026c5f14"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:PIZZMXENJDJ2SPCCHH4QSTAXUT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Measurement of the fast neutron background at the China Jinping Underground Laboratory","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex","nucl-ex"],"primary_cat":"physics.ins-det","authors_text":"2), (2) Institute of Nuclear Science, (3) Key Laboratory of Particle, (4) Institute of Physics, Academia Sinica, Beijing, Chang-Jian Tang (1), Chengdu, Department of Engineering Physics, Hao-Yang Xing (1), Henry T. Wong (4), Jing-Jun Zhu (2) ((1) College of Physical Science, Li Wang (3), Qiang Du (1, Qian Yue (3), Radiation Imaging (Ministry of Education), Shin-Ted Lin (1), Shu-Kui Liu (1), Sichuan University, Taipei), Technology, Tsinghua University, Wei-Wei Wei (2)","submitted_at":"2017-06-21T11:35:32Z","abstract_excerpt":"We report on the measurements of the fluxes and spectra of the environmental fast neutron background at the China Jinping Underground Laboratory (CJPL) with a rock overburden of about 6700 meters water equivalent, using a liquid scintillator detector doped with 0.5% gadolinium. The signature of a prompt nuclear recoil followed by a delayed high energy $\\gamma$-ray cascade is used to identify neutron events. The large energy deposition of the delayed $\\gamma$-rays from the $(n, \\gamma)$ reaction on gadolinium, together with the excellent n-$\\gamma$ discrimination capability provides a powerful "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1706.06831","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":"2026-05-18T00:21:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Zbv/sv5oW7W8rhcHxh/Q69sxXUUAxTQVoouVMICbcickrSQT0Bt4gkKNvH2cGNfTB9JG9nYFULRZgMxemr97Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T22:30:54.095613Z"},"content_sha256":"a3813a98f3acc56b184f27da7d49d72f62b2d79eeb6a19d2fcb35e6b685ee01d","schema_version":"1.0","event_id":"sha256:a3813a98f3acc56b184f27da7d49d72f62b2d79eeb6a19d2fcb35e6b685ee01d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PIZZMXENJDJ2SPCCHH4QSTAXUT/bundle.json","state_url":"https://pith.science/pith/PIZZMXENJDJ2SPCCHH4QSTAXUT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PIZZMXENJDJ2SPCCHH4QSTAXUT/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":"2026-05-30T22:30:54Z","links":{"resolver":"https://pith.science/pith/PIZZMXENJDJ2SPCCHH4QSTAXUT","bundle":"https://pith.science/pith/PIZZMXENJDJ2SPCCHH4QSTAXUT/bundle.json","state":"https://pith.science/pith/PIZZMXENJDJ2SPCCHH4QSTAXUT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PIZZMXENJDJ2SPCCHH4QSTAXUT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:PIZZMXENJDJ2SPCCHH4QSTAXUT","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":"2a118f8651189106fc0c503bef5a0fbee7b1384a584b790ef9f6592ec1ab38ca","cross_cats_sorted":["hep-ex","nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2017-06-21T11:35:32Z","title_canon_sha256":"b525bd2f1e37b22554411389fe2ae3cd0fda7db5fe5fa067b566bb4b79d299c3"},"schema_version":"1.0","source":{"id":"1706.06831","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1706.06831","created_at":"2026-05-18T00:21:57Z"},{"alias_kind":"arxiv_version","alias_value":"1706.06831v2","created_at":"2026-05-18T00:21:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1706.06831","created_at":"2026-05-18T00:21:57Z"},{"alias_kind":"pith_short_12","alias_value":"PIZZMXENJDJ2","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_16","alias_value":"PIZZMXENJDJ2SPCC","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_8","alias_value":"PIZZMXEN","created_at":"2026-05-18T12:31:37Z"}],"graph_snapshots":[{"event_id":"sha256:a3813a98f3acc56b184f27da7d49d72f62b2d79eeb6a19d2fcb35e6b685ee01d","target":"graph","created_at":"2026-05-18T00:21:57Z","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 on the measurements of the fluxes and spectra of the environmental fast neutron background at the China Jinping Underground Laboratory (CJPL) with a rock overburden of about 6700 meters water equivalent, using a liquid scintillator detector doped with 0.5% gadolinium. The signature of a prompt nuclear recoil followed by a delayed high energy $\\gamma$-ray cascade is used to identify neutron events. The large energy deposition of the delayed $\\gamma$-rays from the $(n, \\gamma)$ reaction on gadolinium, together with the excellent n-$\\gamma$ discrimination capability provides a powerful ","authors_text":"2), (2) Institute of Nuclear Science, (3) Key Laboratory of Particle, (4) Institute of Physics, Academia Sinica, Beijing, Chang-Jian Tang (1), Chengdu, Department of Engineering Physics, Hao-Yang Xing (1), Henry T. Wong (4), Jing-Jun Zhu (2) ((1) College of Physical Science, Li Wang (3), Qiang Du (1, Qian Yue (3), Radiation Imaging (Ministry of Education), Shin-Ted Lin (1), Shu-Kui Liu (1), Sichuan University, Taipei), Technology, Tsinghua University, Wei-Wei Wei (2)","cross_cats":["hep-ex","nucl-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2017-06-21T11:35:32Z","title":"Measurement of the fast neutron background at the China Jinping Underground Laboratory"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1706.06831","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":"sha256:1b33be3357d90306cfe751efc2d648ebd6f0d2437daf4b9f63be86ae026c5f14","target":"record","created_at":"2026-05-18T00:21:57Z","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":"2a118f8651189106fc0c503bef5a0fbee7b1384a584b790ef9f6592ec1ab38ca","cross_cats_sorted":["hep-ex","nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2017-06-21T11:35:32Z","title_canon_sha256":"b525bd2f1e37b22554411389fe2ae3cd0fda7db5fe5fa067b566bb4b79d299c3"},"schema_version":"1.0","source":{"id":"1706.06831","kind":"arxiv","version":2}},"canonical_sha256":"7a33965c8d48d3a93c4239f9094c17a4e2217bca068bdf460778116c82bb99f8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7a33965c8d48d3a93c4239f9094c17a4e2217bca068bdf460778116c82bb99f8","first_computed_at":"2026-05-18T00:21:57.030187Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:21:57.030187Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"VilgGar/jDxcPdQ6EhrOCVtGvnSss8FJzz8eypHdYN1VBPjiO0dW1UbKSmPg7R3PFdg954GMG2yG5SJIX8ezCg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:21:57.030860Z","signed_message":"canonical_sha256_bytes"},"source_id":"1706.06831","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1b33be3357d90306cfe751efc2d648ebd6f0d2437daf4b9f63be86ae026c5f14","sha256:a3813a98f3acc56b184f27da7d49d72f62b2d79eeb6a19d2fcb35e6b685ee01d"],"state_sha256":"c108bdc694943e53b098f4b648381a7c91635ef5fb430758a6c1be2d0f25e314"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CFPXcJzGcBp0Pwya9rgTycp1J1zWtfep5/J0DuWosQ+102moP58DWrETqIIBpXi/dvE+8dIt7Qhf2oLnSzZGDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T22:30:54.098733Z","bundle_sha256":"1434f346a10892cd4488a171f6b38e23a25114e5cd3a9323363865f148f9722d"}}