{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:I4ICMCD6I3JGAWDIY4YUXC56UP","short_pith_number":"pith:I4ICMCD6","canonical_record":{"source":{"id":"1702.05159","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.acc-ph","submitted_at":"2017-02-16T21:16:17Z","cross_cats_sorted":[],"title_canon_sha256":"f30f8ff30e8087da791af474ba4d3a0f883b631aad968ce432712813c1b2142e","abstract_canon_sha256":"82a38282d400c11e79fd66564fb27e27c5e9f9b79865988780193f6421d85236"},"schema_version":"1.0"},"canonical_sha256":"471026087e46d2605868c7314b8bbea3c2aa57f18c9a6b32647cbfac612f4192","source":{"kind":"arxiv","id":"1702.05159","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1702.05159","created_at":"2026-05-18T00:50:34Z"},{"alias_kind":"arxiv_version","alias_value":"1702.05159v1","created_at":"2026-05-18T00:50:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1702.05159","created_at":"2026-05-18T00:50:34Z"},{"alias_kind":"pith_short_12","alias_value":"I4ICMCD6I3JG","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_16","alias_value":"I4ICMCD6I3JGAWDI","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_8","alias_value":"I4ICMCD6","created_at":"2026-05-18T12:31:21Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:I4ICMCD6I3JGAWDIY4YUXC56UP","target":"record","payload":{"canonical_record":{"source":{"id":"1702.05159","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.acc-ph","submitted_at":"2017-02-16T21:16:17Z","cross_cats_sorted":[],"title_canon_sha256":"f30f8ff30e8087da791af474ba4d3a0f883b631aad968ce432712813c1b2142e","abstract_canon_sha256":"82a38282d400c11e79fd66564fb27e27c5e9f9b79865988780193f6421d85236"},"schema_version":"1.0"},"canonical_sha256":"471026087e46d2605868c7314b8bbea3c2aa57f18c9a6b32647cbfac612f4192","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:50:34.662787Z","signature_b64":"c7gDTY/LJZs3YlqzA8HiOJW74X4d5BWYXHkkv70t0ycxHN4Zbz+VXxfPF0tDeWyLpPT4/dpCnSi3kghCKbOTDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"471026087e46d2605868c7314b8bbea3c2aa57f18c9a6b32647cbfac612f4192","last_reissued_at":"2026-05-18T00:50:34.662181Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:50:34.662181Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1702.05159","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":"2026-05-18T00:50:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sSpNDkbRx7FVkkyDfGRf811hKDwTLnHTyMbpn9K24jf1cutZHYy5998hW8vd95smQMGHqgL7+DqTaQNYHUSFDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T03:14:28.934063Z"},"content_sha256":"06280e2d8a24fbb1305ff55f02f7d9d3410f7ad4c30e5907c67f6068b9e2a587","schema_version":"1.0","event_id":"sha256:06280e2d8a24fbb1305ff55f02f7d9d3410f7ad4c30e5907c67f6068b9e2a587"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:I4ICMCD6I3JGAWDIY4YUXC56UP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Beam Extraction From The Recycler Ring To P1 Line At Fermilab","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.acc-ph","authors_text":"D. Capista, D. Morris, K. Hazewood (Fermilab), M.J. Yang, M. Xiao, P. Adams","submitted_at":"2017-02-16T21:16:17Z","abstract_excerpt":"The transfer line for beam extraction from the Recycler ring to P1 line provides a way to deliver 8 GeV kinetic energy protons from the Booster to the Delivery ring, via the Recycler, using existing beam transport lines, and without the need for new civil construction. It was designed in 2012. The kicker magnets at RR520 and the lambertson magnet at RR522 in the RR were installed in 2014 Summer Shutdown, the elements of RR to P1 Stub (permanent quads, trim quads, correctors, BPMs, the toroid at 703 and vertical bending dipole at V703 (ADCW) were installed in 2015 Summer Shutdown. On Tuesday, J"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1702.05159","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":"2026-05-18T00:50:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"naXZb0C08SZhg4z16hjOuLadUvjeWrmw1lTNuJFXbtUc7AGxNE9rTBs0z1Y4ZdcjvccPNecVOpLZJN+Ob325Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T03:14:28.934672Z"},"content_sha256":"2dd7f70fe57f30a12d960ccd5100278e8cc0e59799834b35f0f8cdbd8ca982a0","schema_version":"1.0","event_id":"sha256:2dd7f70fe57f30a12d960ccd5100278e8cc0e59799834b35f0f8cdbd8ca982a0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/I4ICMCD6I3JGAWDIY4YUXC56UP/bundle.json","state_url":"https://pith.science/pith/I4ICMCD6I3JGAWDIY4YUXC56UP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/I4ICMCD6I3JGAWDIY4YUXC56UP/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":"2026-05-25T03:14:28Z","links":{"resolver":"https://pith.science/pith/I4ICMCD6I3JGAWDIY4YUXC56UP","bundle":"https://pith.science/pith/I4ICMCD6I3JGAWDIY4YUXC56UP/bundle.json","state":"https://pith.science/pith/I4ICMCD6I3JGAWDIY4YUXC56UP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/I4ICMCD6I3JGAWDIY4YUXC56UP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:I4ICMCD6I3JGAWDIY4YUXC56UP","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":"82a38282d400c11e79fd66564fb27e27c5e9f9b79865988780193f6421d85236","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.acc-ph","submitted_at":"2017-02-16T21:16:17Z","title_canon_sha256":"f30f8ff30e8087da791af474ba4d3a0f883b631aad968ce432712813c1b2142e"},"schema_version":"1.0","source":{"id":"1702.05159","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1702.05159","created_at":"2026-05-18T00:50:34Z"},{"alias_kind":"arxiv_version","alias_value":"1702.05159v1","created_at":"2026-05-18T00:50:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1702.05159","created_at":"2026-05-18T00:50:34Z"},{"alias_kind":"pith_short_12","alias_value":"I4ICMCD6I3JG","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_16","alias_value":"I4ICMCD6I3JGAWDI","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_8","alias_value":"I4ICMCD6","created_at":"2026-05-18T12:31:21Z"}],"graph_snapshots":[{"event_id":"sha256:2dd7f70fe57f30a12d960ccd5100278e8cc0e59799834b35f0f8cdbd8ca982a0","target":"graph","created_at":"2026-05-18T00:50:34Z","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 transfer line for beam extraction from the Recycler ring to P1 line provides a way to deliver 8 GeV kinetic energy protons from the Booster to the Delivery ring, via the Recycler, using existing beam transport lines, and without the need for new civil construction. It was designed in 2012. The kicker magnets at RR520 and the lambertson magnet at RR522 in the RR were installed in 2014 Summer Shutdown, the elements of RR to P1 Stub (permanent quads, trim quads, correctors, BPMs, the toroid at 703 and vertical bending dipole at V703 (ADCW) were installed in 2015 Summer Shutdown. On Tuesday, J","authors_text":"D. Capista, D. Morris, K. Hazewood (Fermilab), M.J. Yang, M. Xiao, P. Adams","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.acc-ph","submitted_at":"2017-02-16T21:16:17Z","title":"Beam Extraction From The Recycler Ring To P1 Line At Fermilab"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1702.05159","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":"sha256:06280e2d8a24fbb1305ff55f02f7d9d3410f7ad4c30e5907c67f6068b9e2a587","target":"record","created_at":"2026-05-18T00:50:34Z","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":"82a38282d400c11e79fd66564fb27e27c5e9f9b79865988780193f6421d85236","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.acc-ph","submitted_at":"2017-02-16T21:16:17Z","title_canon_sha256":"f30f8ff30e8087da791af474ba4d3a0f883b631aad968ce432712813c1b2142e"},"schema_version":"1.0","source":{"id":"1702.05159","kind":"arxiv","version":1}},"canonical_sha256":"471026087e46d2605868c7314b8bbea3c2aa57f18c9a6b32647cbfac612f4192","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"471026087e46d2605868c7314b8bbea3c2aa57f18c9a6b32647cbfac612f4192","first_computed_at":"2026-05-18T00:50:34.662181Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:50:34.662181Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"c7gDTY/LJZs3YlqzA8HiOJW74X4d5BWYXHkkv70t0ycxHN4Zbz+VXxfPF0tDeWyLpPT4/dpCnSi3kghCKbOTDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:50:34.662787Z","signed_message":"canonical_sha256_bytes"},"source_id":"1702.05159","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:06280e2d8a24fbb1305ff55f02f7d9d3410f7ad4c30e5907c67f6068b9e2a587","sha256:2dd7f70fe57f30a12d960ccd5100278e8cc0e59799834b35f0f8cdbd8ca982a0"],"state_sha256":"5a4ddb6fc5befc22072ecf8732ba94ad62c58f174ce139e266133565c89995bb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cP3U04LCRhEpZVKqqpNDzgd/HXAMFEKMwe7HHdHghRsy/4ltTcLE5dsXA3LjQy14WLUrRQtJ5dhbVV0V/5aRAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T03:14:28.937459Z","bundle_sha256":"5514b17a854f6f941c3c455b4397379e6f68396b5197c978ed97db1d3c9f7e05"}}