{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:PBWYZOJGOZN4SMSCSZMBTDZY53","short_pith_number":"pith:PBWYZOJG","canonical_record":{"source":{"id":"1401.4392","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2014-01-17T15:58:47Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"791071f5887b4c8b3313bed466d505001df66402852b40b4c16e6f837ada39a8","abstract_canon_sha256":"7284e89a9453559ca407021d378ac3203102c06d4c54f182f15397f2bb51b7fe"},"schema_version":"1.0"},"canonical_sha256":"786d8cb926765bc932429658198f38eed4f9117b2acc7841a7090bff1336af0d","source":{"kind":"arxiv","id":"1401.4392","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1401.4392","created_at":"2026-05-18T01:45:19Z"},{"alias_kind":"arxiv_version","alias_value":"1401.4392v2","created_at":"2026-05-18T01:45:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1401.4392","created_at":"2026-05-18T01:45:19Z"},{"alias_kind":"pith_short_12","alias_value":"PBWYZOJGOZN4","created_at":"2026-05-18T12:28:43Z"},{"alias_kind":"pith_short_16","alias_value":"PBWYZOJGOZN4SMSC","created_at":"2026-05-18T12:28:43Z"},{"alias_kind":"pith_short_8","alias_value":"PBWYZOJG","created_at":"2026-05-18T12:28:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:PBWYZOJGOZN4SMSCSZMBTDZY53","target":"record","payload":{"canonical_record":{"source":{"id":"1401.4392","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2014-01-17T15:58:47Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"791071f5887b4c8b3313bed466d505001df66402852b40b4c16e6f837ada39a8","abstract_canon_sha256":"7284e89a9453559ca407021d378ac3203102c06d4c54f182f15397f2bb51b7fe"},"schema_version":"1.0"},"canonical_sha256":"786d8cb926765bc932429658198f38eed4f9117b2acc7841a7090bff1336af0d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:45:19.599199Z","signature_b64":"EN6lIFpmdXMVhw1veA+lU8PJmcDm6I6+b8w59C/EphMfvQOgFLY5PnQanRUrD5U0yE3xKGNhoVD5Kk15ggXJCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"786d8cb926765bc932429658198f38eed4f9117b2acc7841a7090bff1336af0d","last_reissued_at":"2026-05-18T01:45:19.598643Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:45:19.598643Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1401.4392","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":"2026-05-18T01:45:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"M4xuq02aMDM1CjXx0UGJjfEA+XOKMcgJz4IBW/iJT/qfASS+d93JAfofF/KItFvCuMjC24l1til9VAeFAvEHDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T08:44:10.879848Z"},"content_sha256":"32c2d743ae1285b4dbcec5401d0d2d72c8ec563a2a91bb0363dcec93444c31b9","schema_version":"1.0","event_id":"sha256:32c2d743ae1285b4dbcec5401d0d2d72c8ec563a2a91bb0363dcec93444c31b9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:PBWYZOJGOZN4SMSCSZMBTDZY53","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Low Momentum Particle Detector for the NA61 Experiment at CERN","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"physics.ins-det","authors_text":"A. Laszlo, D. Varga, G. Kiss, K. Marton","submitted_at":"2014-01-17T15:58:47Z","abstract_excerpt":"The NA61 Experiment at CERN SPS is a large acceptance hadron spectrometer, aimed to studying of hadron-hadron, hadron-nucleus, and nucleus-nucleus interactions in a fixed target environment. The present paper discusses the construction and performance of the Low Momentum Particle Detector (LMPD), a small time projection chamber unit which has been added to the NA61 setup in 2012. The LMPD considerably extends the detector acceptance towards the backward region, surrounding the target in hadron-nucleus interactions. The LMPD features simultaneous range and ionization measurements, which allows "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1401.4392","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":"2026-05-18T01:45:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"X1xQoHrnlO8lkFJDQIDILa/XI0aLDC7FVrScyDnYA3gjoZP9R6DtV5ntJSz0NxlRgyHehsC1VrgijqRDKJh7BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T08:44:10.880582Z"},"content_sha256":"1797ff5a4a2ea3d278c148bb31bdd61dbc34b21b616fdbf632966ef8ae186acc","schema_version":"1.0","event_id":"sha256:1797ff5a4a2ea3d278c148bb31bdd61dbc34b21b616fdbf632966ef8ae186acc"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PBWYZOJGOZN4SMSCSZMBTDZY53/bundle.json","state_url":"https://pith.science/pith/PBWYZOJGOZN4SMSCSZMBTDZY53/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PBWYZOJGOZN4SMSCSZMBTDZY53/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":"2026-05-19T08:44:10Z","links":{"resolver":"https://pith.science/pith/PBWYZOJGOZN4SMSCSZMBTDZY53","bundle":"https://pith.science/pith/PBWYZOJGOZN4SMSCSZMBTDZY53/bundle.json","state":"https://pith.science/pith/PBWYZOJGOZN4SMSCSZMBTDZY53/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PBWYZOJGOZN4SMSCSZMBTDZY53/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:PBWYZOJGOZN4SMSCSZMBTDZY53","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":"7284e89a9453559ca407021d378ac3203102c06d4c54f182f15397f2bb51b7fe","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2014-01-17T15:58:47Z","title_canon_sha256":"791071f5887b4c8b3313bed466d505001df66402852b40b4c16e6f837ada39a8"},"schema_version":"1.0","source":{"id":"1401.4392","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1401.4392","created_at":"2026-05-18T01:45:19Z"},{"alias_kind":"arxiv_version","alias_value":"1401.4392v2","created_at":"2026-05-18T01:45:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1401.4392","created_at":"2026-05-18T01:45:19Z"},{"alias_kind":"pith_short_12","alias_value":"PBWYZOJGOZN4","created_at":"2026-05-18T12:28:43Z"},{"alias_kind":"pith_short_16","alias_value":"PBWYZOJGOZN4SMSC","created_at":"2026-05-18T12:28:43Z"},{"alias_kind":"pith_short_8","alias_value":"PBWYZOJG","created_at":"2026-05-18T12:28:43Z"}],"graph_snapshots":[{"event_id":"sha256:1797ff5a4a2ea3d278c148bb31bdd61dbc34b21b616fdbf632966ef8ae186acc","target":"graph","created_at":"2026-05-18T01:45:19Z","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 NA61 Experiment at CERN SPS is a large acceptance hadron spectrometer, aimed to studying of hadron-hadron, hadron-nucleus, and nucleus-nucleus interactions in a fixed target environment. The present paper discusses the construction and performance of the Low Momentum Particle Detector (LMPD), a small time projection chamber unit which has been added to the NA61 setup in 2012. The LMPD considerably extends the detector acceptance towards the backward region, surrounding the target in hadron-nucleus interactions. The LMPD features simultaneous range and ionization measurements, which allows ","authors_text":"A. Laszlo, D. Varga, G. Kiss, K. Marton","cross_cats":["hep-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2014-01-17T15:58:47Z","title":"Low Momentum Particle Detector for the NA61 Experiment at CERN"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1401.4392","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":"sha256:32c2d743ae1285b4dbcec5401d0d2d72c8ec563a2a91bb0363dcec93444c31b9","target":"record","created_at":"2026-05-18T01:45:19Z","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":"7284e89a9453559ca407021d378ac3203102c06d4c54f182f15397f2bb51b7fe","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2014-01-17T15:58:47Z","title_canon_sha256":"791071f5887b4c8b3313bed466d505001df66402852b40b4c16e6f837ada39a8"},"schema_version":"1.0","source":{"id":"1401.4392","kind":"arxiv","version":2}},"canonical_sha256":"786d8cb926765bc932429658198f38eed4f9117b2acc7841a7090bff1336af0d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"786d8cb926765bc932429658198f38eed4f9117b2acc7841a7090bff1336af0d","first_computed_at":"2026-05-18T01:45:19.598643Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:45:19.598643Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"EN6lIFpmdXMVhw1veA+lU8PJmcDm6I6+b8w59C/EphMfvQOgFLY5PnQanRUrD5U0yE3xKGNhoVD5Kk15ggXJCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:45:19.599199Z","signed_message":"canonical_sha256_bytes"},"source_id":"1401.4392","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:32c2d743ae1285b4dbcec5401d0d2d72c8ec563a2a91bb0363dcec93444c31b9","sha256:1797ff5a4a2ea3d278c148bb31bdd61dbc34b21b616fdbf632966ef8ae186acc"],"state_sha256":"7bd74d017bbf91d3e53388526c9f864ee141c747d8ab59c80a1edead424dc0ef"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yfDsH1C27ZN7i2a4yGViNgNWpa+ZK7Xht+5sIcy83/eBzgAMZb53FqUpPcn/CkmShQetjgDe2SAwxE2dyGfQCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-19T08:44:10.883638Z","bundle_sha256":"1462abbe74fb68c28c4be6d798f0c0a2cff6ccd484b23c4b565ab128ba445783"}}