{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2022:S3D37ZOAEOLQO6PCXKTN27HJDE","short_pith_number":"pith:S3D37ZOA","schema_version":"1.0","canonical_sha256":"96c7bfe5c023970779e2baa6dd7ce9193fe17804963f4ab9f241347a910aea4c","source":{"kind":"arxiv","id":"2211.11900","version":1},"attestation_state":"computed","paper":{"title":"Status of the X17 search in Montreal","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","headline":"","cross_cats":["nucl-ex"],"primary_cat":"physics.ins-det","authors_text":"A. Gupta, A. Robinson, B. Broerman, D. Bryman, D. Tiwari, G. Azuelos, G. Lefebvre, H.N. da Luz, J-P. Martin, K. Leach, L-A. Hamel, L. Doria, M. Laurin, N. Starinski, R. Sykora, U. Wichoski, V. Zacek, W.C. Chen","submitted_at":"2022-11-21T22:57:47Z","abstract_excerpt":"At the Montreal Tandem accelerator, an experiment is being set up to measure internal pair creation from the decay of nuclear excited states using a multiwire proportional chamber and scintillator bars surrounding it from the DAPHNE experiment. The acceptance covers a solid angle of nearly 4$\\pi$. Preamplifiers and the data acquisition hardware have been designed and tested. The water-cooled $^7$LiF target, mounted on an Al foil is in a thin carbon fiber section of the beamline. The experiment will focus at first on a measurement of the internal pair creation from the 18.15 MeV state of $^8$Be"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2211.11900","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"physics.ins-det","submitted_at":"2022-11-21T22:57:47Z","cross_cats_sorted":["nucl-ex"],"title_canon_sha256":"edccbb0c664a35828fbda6f3e0ad33f42ce453cfc746c968e4ff57a905ce0180","abstract_canon_sha256":"247be3239f2cb0b118a9c3a5200cf456e0c00b7c3a9ddbfb6566ee1d01da3257"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:28:31.993223Z","signature_b64":"NIHiqKfgMdxqi1vhYj01Qj2O+KYXaL/cM4f903RVw/ZHxNhTqsXbv/8gilFPsJ05lFtSwgiwMBmuNfhlsJcYBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"96c7bfe5c023970779e2baa6dd7ce9193fe17804963f4ab9f241347a910aea4c","last_reissued_at":"2026-07-05T05:28:31.992821Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:28:31.992821Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Status of the X17 search in Montreal","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","headline":"","cross_cats":["nucl-ex"],"primary_cat":"physics.ins-det","authors_text":"A. Gupta, A. Robinson, B. Broerman, D. Bryman, D. Tiwari, G. Azuelos, G. Lefebvre, H.N. da Luz, J-P. Martin, K. Leach, L-A. Hamel, L. Doria, M. Laurin, N. Starinski, R. Sykora, U. Wichoski, V. Zacek, W.C. Chen","submitted_at":"2022-11-21T22:57:47Z","abstract_excerpt":"At the Montreal Tandem accelerator, an experiment is being set up to measure internal pair creation from the decay of nuclear excited states using a multiwire proportional chamber and scintillator bars surrounding it from the DAPHNE experiment. The acceptance covers a solid angle of nearly 4$\\pi$. Preamplifiers and the data acquisition hardware have been designed and tested. The water-cooled $^7$LiF target, mounted on an Al foil is in a thin carbon fiber section of the beamline. The experiment will focus at first on a measurement of the internal pair creation from the 18.15 MeV state of $^8$Be"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2211.11900","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2211.11900/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2211.11900","created_at":"2026-07-05T05:28:31.992873+00:00"},{"alias_kind":"arxiv_version","alias_value":"2211.11900v1","created_at":"2026-07-05T05:28:31.992873+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2211.11900","created_at":"2026-07-05T05:28:31.992873+00:00"},{"alias_kind":"pith_short_12","alias_value":"S3D37ZOAEOLQ","created_at":"2026-07-05T05:28:31.992873+00:00"},{"alias_kind":"pith_short_16","alias_value":"S3D37ZOAEOLQO6PC","created_at":"2026-07-05T05:28:31.992873+00:00"},{"alias_kind":"pith_short_8","alias_value":"S3D37ZOA","created_at":"2026-07-05T05:28:31.992873+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/S3D37ZOAEOLQO6PCXKTN27HJDE","json":"https://pith.science/pith/S3D37ZOAEOLQO6PCXKTN27HJDE.json","graph_json":"https://pith.science/api/pith-number/S3D37ZOAEOLQO6PCXKTN27HJDE/graph.json","events_json":"https://pith.science/api/pith-number/S3D37ZOAEOLQO6PCXKTN27HJDE/events.json","paper":"https://pith.science/paper/S3D37ZOA"},"agent_actions":{"view_html":"https://pith.science/pith/S3D37ZOAEOLQO6PCXKTN27HJDE","download_json":"https://pith.science/pith/S3D37ZOAEOLQO6PCXKTN27HJDE.json","view_paper":"https://pith.science/paper/S3D37ZOA","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2211.11900&json=true","fetch_graph":"https://pith.science/api/pith-number/S3D37ZOAEOLQO6PCXKTN27HJDE/graph.json","fetch_events":"https://pith.science/api/pith-number/S3D37ZOAEOLQO6PCXKTN27HJDE/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/S3D37ZOAEOLQO6PCXKTN27HJDE/action/timestamp_anchor","attest_storage":"https://pith.science/pith/S3D37ZOAEOLQO6PCXKTN27HJDE/action/storage_attestation","attest_author":"https://pith.science/pith/S3D37ZOAEOLQO6PCXKTN27HJDE/action/author_attestation","sign_citation":"https://pith.science/pith/S3D37ZOAEOLQO6PCXKTN27HJDE/action/citation_signature","submit_replication":"https://pith.science/pith/S3D37ZOAEOLQO6PCXKTN27HJDE/action/replication_record"}},"created_at":"2026-07-05T05:28:31.992873+00:00","updated_at":"2026-07-05T05:28:31.992873+00:00"}