{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:KUHOGRLVJBV4FKTG76QY553EBQ","short_pith_number":"pith:KUHOGRLV","canonical_record":{"source":{"id":"1406.6115","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2014-06-24T00:51:56Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"b7a56e356ca375713ce135b8b11a4e9b1195dd09af21a72913830d59eeae76be","abstract_canon_sha256":"844fd9fd01553906a35407d4c84efe40a4f0c82996956e149631c444450278cc"},"schema_version":"1.0"},"canonical_sha256":"550ee34575486bc2aa66ffa18ef7640c2cde430a940c3cb6d3b297f0686486e0","source":{"kind":"arxiv","id":"1406.6115","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1406.6115","created_at":"2026-05-18T01:57:23Z"},{"alias_kind":"arxiv_version","alias_value":"1406.6115v3","created_at":"2026-05-18T01:57:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1406.6115","created_at":"2026-05-18T01:57:23Z"},{"alias_kind":"pith_short_12","alias_value":"KUHOGRLVJBV4","created_at":"2026-05-18T12:28:35Z"},{"alias_kind":"pith_short_16","alias_value":"KUHOGRLVJBV4FKTG","created_at":"2026-05-18T12:28:35Z"},{"alias_kind":"pith_short_8","alias_value":"KUHOGRLV","created_at":"2026-05-18T12:28:35Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:KUHOGRLVJBV4FKTG76QY553EBQ","target":"record","payload":{"canonical_record":{"source":{"id":"1406.6115","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2014-06-24T00:51:56Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"b7a56e356ca375713ce135b8b11a4e9b1195dd09af21a72913830d59eeae76be","abstract_canon_sha256":"844fd9fd01553906a35407d4c84efe40a4f0c82996956e149631c444450278cc"},"schema_version":"1.0"},"canonical_sha256":"550ee34575486bc2aa66ffa18ef7640c2cde430a940c3cb6d3b297f0686486e0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:57:23.606431Z","signature_b64":"MrmGTK0WXQhQmKUzIHvt5r/3STDWsT+g6lkTdZSrBb/W3JY3vTahf5BH3nwUaCsIBvpXY5xSAlAgrwSFBiI0Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"550ee34575486bc2aa66ffa18ef7640c2cde430a940c3cb6d3b297f0686486e0","last_reissued_at":"2026-05-18T01:57:23.605950Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:57:23.605950Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1406.6115","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:57:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zuoeZZzP4fIKLNPnSVeo52eb+jezQ4RzLYbtOtdB2DtskzUq1Vsci/UtblWTeaDhK3VvQjL5OE7gdH1SenXTCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T18:14:57.633787Z"},"content_sha256":"5a2457be3add3bc44097ebd1dde75f9cead866eec26a81ea47fdc56fa84651b3","schema_version":"1.0","event_id":"sha256:5a2457be3add3bc44097ebd1dde75f9cead866eec26a81ea47fdc56fa84651b3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:KUHOGRLVJBV4FKTG76QY553EBQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Heavy Photon Search Test Detector","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"physics.ins-det","authors_text":"Alexander Grillo, Alexandre Deur, Alexey Kubarovsky, Al Odian, Andrea Celentano, Arne Freyberger, Benjamin Raydo, Bogdan Wojtsekhowski, Camille Desnault, Carlos Salgado, Chris Cuevas, Clive Field, Daria Sokhan, Dieter Walz, Emmanuel Rauly, Emmanuel Rindel, Francois-Xavier Girod, Gabriel Charles, Gunther Haller, Hakop Voskanyan, Homer Neal, Hovanes Egiyan, Jeremy McCormick, John Jaros, Joseph Reichert, Keith Griffioen, Ken Moffeit, Larry Weinstein, Latifa Elouadrhiri, Mahbub Khandaker, Marco Battaglieri, Marco Oriunno, Mathew Graham, Maurik Holtrop, Maurizio Ungaro, Michel Guidal, Natalia Dashyan, Natalia Toro, Nerses Gevorgyan, Norman Graf, Omar Moreno, Per Hansson Adrian, Philippe Rosier, Philip Schuster, Rafayel Paremuzyan, Raffaella DeVita, Richard Partridge, Rouven Essig, Ryan Herbst, Sarah Phillips, Scott Kaneta, Sergey Boyarinov, Sho Uemura, Silvia Niccolai, Stepan Stepanyan, Stephen Bueltmann, Takashi Maruyama, Timothy Nelson, Valery Kubarovsky, Vitaliy Fadeyev, Volker Burkert, William Cooper, Youri Sharabian, Yuri Gershtein","submitted_at":"2014-06-24T00:51:56Z","abstract_excerpt":"The Heavy Photon Search (HPS), an experiment to search for a hidden sector photon in fixed target electroproduction, is preparing for installation at the Thomas Jefferson National Accelerator Facility (JLab) in the Fall of 2014. As the first stage of this project, the HPS Test Run apparatus was constructed and operated in 2012 to demonstrate the experiment's technical feasibility and to confirm that the trigger rates and occupancies are as expected. This paper describes the HPS Test Run apparatus and readout electronics and its performance. In this setting, a heavy photon can be identified as "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1406.6115","kind":"arxiv","version":3},"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":"2026-05-18T01:57:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"g+Ti079gXUvvAFcOK4GEBCP4k+Wsl379rghoHWdSr0zI+hVZo0FtTSKlhHk9Gl9munwhP9TZQ26LlGl5do40Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T18:14:57.634166Z"},"content_sha256":"afbe554674e1999597e6952e80a512f736d75c1ddbcef1e8636a4ca597e8a654","schema_version":"1.0","event_id":"sha256:afbe554674e1999597e6952e80a512f736d75c1ddbcef1e8636a4ca597e8a654"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KUHOGRLVJBV4FKTG76QY553EBQ/bundle.json","state_url":"https://pith.science/pith/KUHOGRLVJBV4FKTG76QY553EBQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KUHOGRLVJBV4FKTG76QY553EBQ/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":"2026-05-19T18:14:57Z","links":{"resolver":"https://pith.science/pith/KUHOGRLVJBV4FKTG76QY553EBQ","bundle":"https://pith.science/pith/KUHOGRLVJBV4FKTG76QY553EBQ/bundle.json","state":"https://pith.science/pith/KUHOGRLVJBV4FKTG76QY553EBQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KUHOGRLVJBV4FKTG76QY553EBQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:KUHOGRLVJBV4FKTG76QY553EBQ","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":"844fd9fd01553906a35407d4c84efe40a4f0c82996956e149631c444450278cc","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2014-06-24T00:51:56Z","title_canon_sha256":"b7a56e356ca375713ce135b8b11a4e9b1195dd09af21a72913830d59eeae76be"},"schema_version":"1.0","source":{"id":"1406.6115","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1406.6115","created_at":"2026-05-18T01:57:23Z"},{"alias_kind":"arxiv_version","alias_value":"1406.6115v3","created_at":"2026-05-18T01:57:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1406.6115","created_at":"2026-05-18T01:57:23Z"},{"alias_kind":"pith_short_12","alias_value":"KUHOGRLVJBV4","created_at":"2026-05-18T12:28:35Z"},{"alias_kind":"pith_short_16","alias_value":"KUHOGRLVJBV4FKTG","created_at":"2026-05-18T12:28:35Z"},{"alias_kind":"pith_short_8","alias_value":"KUHOGRLV","created_at":"2026-05-18T12:28:35Z"}],"graph_snapshots":[{"event_id":"sha256:afbe554674e1999597e6952e80a512f736d75c1ddbcef1e8636a4ca597e8a654","target":"graph","created_at":"2026-05-18T01:57:23Z","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 Heavy Photon Search (HPS), an experiment to search for a hidden sector photon in fixed target electroproduction, is preparing for installation at the Thomas Jefferson National Accelerator Facility (JLab) in the Fall of 2014. As the first stage of this project, the HPS Test Run apparatus was constructed and operated in 2012 to demonstrate the experiment's technical feasibility and to confirm that the trigger rates and occupancies are as expected. This paper describes the HPS Test Run apparatus and readout electronics and its performance. In this setting, a heavy photon can be identified as ","authors_text":"Alexander Grillo, Alexandre Deur, Alexey Kubarovsky, Al Odian, Andrea Celentano, Arne Freyberger, Benjamin Raydo, Bogdan Wojtsekhowski, Camille Desnault, Carlos Salgado, Chris Cuevas, Clive Field, Daria Sokhan, Dieter Walz, Emmanuel Rauly, Emmanuel Rindel, Francois-Xavier Girod, Gabriel Charles, Gunther Haller, Hakop Voskanyan, Homer Neal, Hovanes Egiyan, Jeremy McCormick, John Jaros, Joseph Reichert, Keith Griffioen, Ken Moffeit, Larry Weinstein, Latifa Elouadrhiri, Mahbub Khandaker, Marco Battaglieri, Marco Oriunno, Mathew Graham, Maurik Holtrop, Maurizio Ungaro, Michel Guidal, Natalia Dashyan, Natalia Toro, Nerses Gevorgyan, Norman Graf, Omar Moreno, Per Hansson Adrian, Philippe Rosier, Philip Schuster, Rafayel Paremuzyan, Raffaella DeVita, Richard Partridge, Rouven Essig, Ryan Herbst, Sarah Phillips, Scott Kaneta, Sergey Boyarinov, Sho Uemura, Silvia Niccolai, Stepan Stepanyan, Stephen Bueltmann, Takashi Maruyama, Timothy Nelson, Valery Kubarovsky, Vitaliy Fadeyev, Volker Burkert, William Cooper, Youri Sharabian, Yuri Gershtein","cross_cats":["hep-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2014-06-24T00:51:56Z","title":"The Heavy Photon Search Test Detector"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1406.6115","kind":"arxiv","version":3},"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":"sha256:5a2457be3add3bc44097ebd1dde75f9cead866eec26a81ea47fdc56fa84651b3","target":"record","created_at":"2026-05-18T01:57:23Z","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":"844fd9fd01553906a35407d4c84efe40a4f0c82996956e149631c444450278cc","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2014-06-24T00:51:56Z","title_canon_sha256":"b7a56e356ca375713ce135b8b11a4e9b1195dd09af21a72913830d59eeae76be"},"schema_version":"1.0","source":{"id":"1406.6115","kind":"arxiv","version":3}},"canonical_sha256":"550ee34575486bc2aa66ffa18ef7640c2cde430a940c3cb6d3b297f0686486e0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"550ee34575486bc2aa66ffa18ef7640c2cde430a940c3cb6d3b297f0686486e0","first_computed_at":"2026-05-18T01:57:23.605950Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:57:23.605950Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"MrmGTK0WXQhQmKUzIHvt5r/3STDWsT+g6lkTdZSrBb/W3JY3vTahf5BH3nwUaCsIBvpXY5xSAlAgrwSFBiI0Dw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:57:23.606431Z","signed_message":"canonical_sha256_bytes"},"source_id":"1406.6115","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5a2457be3add3bc44097ebd1dde75f9cead866eec26a81ea47fdc56fa84651b3","sha256:afbe554674e1999597e6952e80a512f736d75c1ddbcef1e8636a4ca597e8a654"],"state_sha256":"48e05ed5d731ab795525f256e86bdeead1ed2f6b062de0a7f14f948e233c2946"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/NwTfevlKUxvfS4oYXrZNZ9aOPD4NqyKSI/5WbBar+Za09i6hFv3ACW4fvee+usg+dwS4ubi5aP7DbCsAGxBAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-19T18:14:57.636849Z","bundle_sha256":"bbbf5f299eebc6547d4e265cfc4ff6fd1d8acc502b428fe5cecff8ef7ba23b3c"}}