{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:DFA3LEGQHXXXYZEOBJFVOO7PGV","short_pith_number":"pith:DFA3LEGQ","canonical_record":{"source":{"id":"1803.00956","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.acc-ph","submitted_at":"2018-03-02T17:19:14Z","cross_cats_sorted":[],"title_canon_sha256":"6520f579f9c7c2c8374fb983ccd24bd238e5659c91cb00eaa3816b9ea49b55b2","abstract_canon_sha256":"5452983d477063be3341c775af4661beae8fdc569de0351f3feedcbcc8d3d9f2"},"schema_version":"1.0"},"canonical_sha256":"1941b590d03def7c648e0a4b573bef3572d69e1fa51e48fb4ac352db1fbe7d10","source":{"kind":"arxiv","id":"1803.00956","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.00956","created_at":"2026-05-18T00:22:07Z"},{"alias_kind":"arxiv_version","alias_value":"1803.00956v1","created_at":"2026-05-18T00:22:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.00956","created_at":"2026-05-18T00:22:07Z"},{"alias_kind":"pith_short_12","alias_value":"DFA3LEGQHXXX","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_16","alias_value":"DFA3LEGQHXXXYZEO","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_8","alias_value":"DFA3LEGQ","created_at":"2026-05-18T12:32:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:DFA3LEGQHXXXYZEOBJFVOO7PGV","target":"record","payload":{"canonical_record":{"source":{"id":"1803.00956","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.acc-ph","submitted_at":"2018-03-02T17:19:14Z","cross_cats_sorted":[],"title_canon_sha256":"6520f579f9c7c2c8374fb983ccd24bd238e5659c91cb00eaa3816b9ea49b55b2","abstract_canon_sha256":"5452983d477063be3341c775af4661beae8fdc569de0351f3feedcbcc8d3d9f2"},"schema_version":"1.0"},"canonical_sha256":"1941b590d03def7c648e0a4b573bef3572d69e1fa51e48fb4ac352db1fbe7d10","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:22:07.380801Z","signature_b64":"lxlcjj32udWyUzebVY8c3r23l+jJqX+zO28zr2b+n1cJWff+aVvDoBK5onr+M+4vA/78Ul4e55EN7M8ECg+ZBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1941b590d03def7c648e0a4b573bef3572d69e1fa51e48fb4ac352db1fbe7d10","last_reissued_at":"2026-05-18T00:22:07.380157Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:22:07.380157Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1803.00956","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":"2026-05-18T00:22:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pniBqJlJ1ym//vSFEILNPfZHLXtEiXJTBHgciWYVbD8smKODa9ZWXIEnElC1s9y27MaPbcQ61pe5K5w2z3hSDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T06:02:18.779923Z"},"content_sha256":"66bef2cd48a5635ca835fedd024346b09e55c01cca2ca1322fb8a80422ee08f9","schema_version":"1.0","event_id":"sha256:66bef2cd48a5635ca835fedd024346b09e55c01cca2ca1322fb8a80422ee08f9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:DFA3LEGQHXXXYZEOBJFVOO7PGV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Diagnostics upgrades for investigations of HOM effects in Tesla-type SCRF cavities","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.acc-ph","authors_text":"A.H. Lumpkin, D. Edstrom Jr., J. Ruan, N. Eddy (Fermilab) B.E. Carlsten (Los Alamos), P. Prieto, R. Thurman-Keup, Y. Shin","submitted_at":"2018-03-02T17:19:14Z","abstract_excerpt":"We describe the upgrades to diagnostic capabilities on the Fermilab Accelerator Science and Technology (FAST) electron linear accelerator that will allow investigations of the effects of high-order modes (HOMs) in SCRF cavities on macropulse-average beam quality. We examine the dipole modes in the first pass-band generally observed in the 1.6-1.9 GHz regime for TESLA-type SCRF cavities due to uniform transverse beam offsets of the electron beam. Such cavities are the basis of the accelerators such as the European XFEL and the proposed MaRIE XFEL facility. Preliminary HOM detector data, prototy"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.00956","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":"2026-05-18T00:22:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uL8ZMCPtg28gz5u/vVgV203hEDAsbeK1clobdOTSpnvNKeM4OnAlRcsgBr8d+/SZswhz/Y+0XkGq1FCHJGB8Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T06:02:18.780600Z"},"content_sha256":"fd506a3198e085c9d72968df8f72e2649dd65f613c61f15399fef823735ae6f4","schema_version":"1.0","event_id":"sha256:fd506a3198e085c9d72968df8f72e2649dd65f613c61f15399fef823735ae6f4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DFA3LEGQHXXXYZEOBJFVOO7PGV/bundle.json","state_url":"https://pith.science/pith/DFA3LEGQHXXXYZEOBJFVOO7PGV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DFA3LEGQHXXXYZEOBJFVOO7PGV/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":"2026-05-26T06:02:18Z","links":{"resolver":"https://pith.science/pith/DFA3LEGQHXXXYZEOBJFVOO7PGV","bundle":"https://pith.science/pith/DFA3LEGQHXXXYZEOBJFVOO7PGV/bundle.json","state":"https://pith.science/pith/DFA3LEGQHXXXYZEOBJFVOO7PGV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DFA3LEGQHXXXYZEOBJFVOO7PGV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:DFA3LEGQHXXXYZEOBJFVOO7PGV","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":"5452983d477063be3341c775af4661beae8fdc569de0351f3feedcbcc8d3d9f2","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.acc-ph","submitted_at":"2018-03-02T17:19:14Z","title_canon_sha256":"6520f579f9c7c2c8374fb983ccd24bd238e5659c91cb00eaa3816b9ea49b55b2"},"schema_version":"1.0","source":{"id":"1803.00956","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.00956","created_at":"2026-05-18T00:22:07Z"},{"alias_kind":"arxiv_version","alias_value":"1803.00956v1","created_at":"2026-05-18T00:22:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.00956","created_at":"2026-05-18T00:22:07Z"},{"alias_kind":"pith_short_12","alias_value":"DFA3LEGQHXXX","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_16","alias_value":"DFA3LEGQHXXXYZEO","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_8","alias_value":"DFA3LEGQ","created_at":"2026-05-18T12:32:19Z"}],"graph_snapshots":[{"event_id":"sha256:fd506a3198e085c9d72968df8f72e2649dd65f613c61f15399fef823735ae6f4","target":"graph","created_at":"2026-05-18T00:22:07Z","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 describe the upgrades to diagnostic capabilities on the Fermilab Accelerator Science and Technology (FAST) electron linear accelerator that will allow investigations of the effects of high-order modes (HOMs) in SCRF cavities on macropulse-average beam quality. We examine the dipole modes in the first pass-band generally observed in the 1.6-1.9 GHz regime for TESLA-type SCRF cavities due to uniform transverse beam offsets of the electron beam. Such cavities are the basis of the accelerators such as the European XFEL and the proposed MaRIE XFEL facility. Preliminary HOM detector data, prototy","authors_text":"A.H. Lumpkin, D. Edstrom Jr., J. Ruan, N. Eddy (Fermilab) B.E. Carlsten (Los Alamos), P. Prieto, R. Thurman-Keup, Y. Shin","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.acc-ph","submitted_at":"2018-03-02T17:19:14Z","title":"Diagnostics upgrades for investigations of HOM effects in Tesla-type SCRF cavities"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.00956","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":"sha256:66bef2cd48a5635ca835fedd024346b09e55c01cca2ca1322fb8a80422ee08f9","target":"record","created_at":"2026-05-18T00:22:07Z","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":"5452983d477063be3341c775af4661beae8fdc569de0351f3feedcbcc8d3d9f2","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.acc-ph","submitted_at":"2018-03-02T17:19:14Z","title_canon_sha256":"6520f579f9c7c2c8374fb983ccd24bd238e5659c91cb00eaa3816b9ea49b55b2"},"schema_version":"1.0","source":{"id":"1803.00956","kind":"arxiv","version":1}},"canonical_sha256":"1941b590d03def7c648e0a4b573bef3572d69e1fa51e48fb4ac352db1fbe7d10","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1941b590d03def7c648e0a4b573bef3572d69e1fa51e48fb4ac352db1fbe7d10","first_computed_at":"2026-05-18T00:22:07.380157Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:22:07.380157Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"lxlcjj32udWyUzebVY8c3r23l+jJqX+zO28zr2b+n1cJWff+aVvDoBK5onr+M+4vA/78Ul4e55EN7M8ECg+ZBA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:22:07.380801Z","signed_message":"canonical_sha256_bytes"},"source_id":"1803.00956","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:66bef2cd48a5635ca835fedd024346b09e55c01cca2ca1322fb8a80422ee08f9","sha256:fd506a3198e085c9d72968df8f72e2649dd65f613c61f15399fef823735ae6f4"],"state_sha256":"6ed990c3abefeb5662c3377a7c620bfc5df5eda2f831cde9ecf5613621c12773"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rrW+RogqBxk0MZlbhfMhS5Wz7VmVFvBEHGHrFNneXWpVm2fLfGAdYrLoKc3EywZU+LiP3IMFZgh7O5xBTlrABg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T06:02:18.783779Z","bundle_sha256":"5cff8514f00a35abd269faa21152f29d79a40b0329781c3d18fed8793b9e4e95"}}