{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:6TAZLF6L7L44DO3CSJTZHZVWPS","short_pith_number":"pith:6TAZLF6L","canonical_record":{"source":{"id":"1208.2122","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2012-08-10T09:13:45Z","cross_cats_sorted":[],"title_canon_sha256":"2bab00c57d08dbaf3c54024a142a56cb2219abe33439d7a596675ccdac56e8ef","abstract_canon_sha256":"44a1a0d2cb09098efffd248e47b607f86ac6303fe1f34f86e1bb3d2d12d241c2"},"schema_version":"1.0"},"canonical_sha256":"f4c19597cbfaf9c1bb62926793e6b67c9c0c0687fc0dd275b458661930df63fa","source":{"kind":"arxiv","id":"1208.2122","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1208.2122","created_at":"2026-05-18T03:49:00Z"},{"alias_kind":"arxiv_version","alias_value":"1208.2122v1","created_at":"2026-05-18T03:49:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.2122","created_at":"2026-05-18T03:49:00Z"},{"alias_kind":"pith_short_12","alias_value":"6TAZLF6L7L44","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_16","alias_value":"6TAZLF6L7L44DO3C","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_8","alias_value":"6TAZLF6L","created_at":"2026-05-18T12:26:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:6TAZLF6L7L44DO3CSJTZHZVWPS","target":"record","payload":{"canonical_record":{"source":{"id":"1208.2122","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2012-08-10T09:13:45Z","cross_cats_sorted":[],"title_canon_sha256":"2bab00c57d08dbaf3c54024a142a56cb2219abe33439d7a596675ccdac56e8ef","abstract_canon_sha256":"44a1a0d2cb09098efffd248e47b607f86ac6303fe1f34f86e1bb3d2d12d241c2"},"schema_version":"1.0"},"canonical_sha256":"f4c19597cbfaf9c1bb62926793e6b67c9c0c0687fc0dd275b458661930df63fa","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:49:00.075077Z","signature_b64":"ac+DZoGJkfNp/kFm8yH62dwfs3KXsMJijaepWDaeLl08R2FdS+6QK3R0OzRcQ6seQ6q8NvU+9QiuattUrdKUCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f4c19597cbfaf9c1bb62926793e6b67c9c0c0687fc0dd275b458661930df63fa","last_reissued_at":"2026-05-18T03:49:00.074337Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:49:00.074337Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1208.2122","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":"2026-05-18T03:49:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"V/DR/MU5bk3t0nl8UkP4uHKaH5LoUKF9ugWYbbewO+wwGJLt1juUTLGI4fb02UMj7j5e8+/DDz3sw5OZy6SkAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T04:25:50.811682Z"},"content_sha256":"2ebaa3e01219f4ade90beadf1375ea2b0907fd8e5768b78410af4a0f045dbcb6","schema_version":"1.0","event_id":"sha256:2ebaa3e01219f4ade90beadf1375ea2b0907fd8e5768b78410af4a0f045dbcb6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:6TAZLF6L7L44DO3CSJTZHZVWPS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Study of Beam Position Diagnostics with Beam-excited Dipole Higher Order Modes using a Downconverter Test Electronics in Third Harmonic 3.9 GHz Superconducting Accelerating Cavities at FLASH","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.acc-ph","authors_text":"B. Fellenz, B. Lorbeer, M. Wendt, N. Baboi, N. Eddy, P. Zhang, R.M. Jones, T. Wamsat","submitted_at":"2012-08-10T09:13:45Z","abstract_excerpt":"Beam-excited higher order modes (HOM) in accelerating cavities contain transverse beam position information. Previous studies have narrowed down three modal options for beam position diagnostics in the third harmonic 3.9 GHz cavities at FLASH. Localized modes in the beam pipes at approximately 4.1 GHz and in the fifth cavity dipole band at approximately 9 GHz were found, that can provide a local measurement of the beam position. In contrast, propagating modes in the first and second dipole bands between 4.2 and 5.5 GHz can reach a better resolution. All the options were assessed with a special"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.2122","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":"2026-05-18T03:49:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jL3guq1TBvtuWv4cNqdgjMTmRa1Br6LkIgW26xyzvD4UUhQc76Q/hdZt2YhFktLy7j2pJbHiCRZITqJdgexzCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T04:25:50.812034Z"},"content_sha256":"4a52d311001fda4c663e2629281ededb11fffe3cb7aad68c3c3249b95545e0ae","schema_version":"1.0","event_id":"sha256:4a52d311001fda4c663e2629281ededb11fffe3cb7aad68c3c3249b95545e0ae"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6TAZLF6L7L44DO3CSJTZHZVWPS/bundle.json","state_url":"https://pith.science/pith/6TAZLF6L7L44DO3CSJTZHZVWPS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6TAZLF6L7L44DO3CSJTZHZVWPS/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":"2026-05-28T04:25:50Z","links":{"resolver":"https://pith.science/pith/6TAZLF6L7L44DO3CSJTZHZVWPS","bundle":"https://pith.science/pith/6TAZLF6L7L44DO3CSJTZHZVWPS/bundle.json","state":"https://pith.science/pith/6TAZLF6L7L44DO3CSJTZHZVWPS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6TAZLF6L7L44DO3CSJTZHZVWPS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:6TAZLF6L7L44DO3CSJTZHZVWPS","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":"44a1a0d2cb09098efffd248e47b607f86ac6303fe1f34f86e1bb3d2d12d241c2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2012-08-10T09:13:45Z","title_canon_sha256":"2bab00c57d08dbaf3c54024a142a56cb2219abe33439d7a596675ccdac56e8ef"},"schema_version":"1.0","source":{"id":"1208.2122","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1208.2122","created_at":"2026-05-18T03:49:00Z"},{"alias_kind":"arxiv_version","alias_value":"1208.2122v1","created_at":"2026-05-18T03:49:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.2122","created_at":"2026-05-18T03:49:00Z"},{"alias_kind":"pith_short_12","alias_value":"6TAZLF6L7L44","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_16","alias_value":"6TAZLF6L7L44DO3C","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_8","alias_value":"6TAZLF6L","created_at":"2026-05-18T12:26:56Z"}],"graph_snapshots":[{"event_id":"sha256:4a52d311001fda4c663e2629281ededb11fffe3cb7aad68c3c3249b95545e0ae","target":"graph","created_at":"2026-05-18T03:49:00Z","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":"Beam-excited higher order modes (HOM) in accelerating cavities contain transverse beam position information. Previous studies have narrowed down three modal options for beam position diagnostics in the third harmonic 3.9 GHz cavities at FLASH. Localized modes in the beam pipes at approximately 4.1 GHz and in the fifth cavity dipole band at approximately 9 GHz were found, that can provide a local measurement of the beam position. In contrast, propagating modes in the first and second dipole bands between 4.2 and 5.5 GHz can reach a better resolution. All the options were assessed with a special","authors_text":"B. Fellenz, B. Lorbeer, M. Wendt, N. Baboi, N. Eddy, P. Zhang, R.M. Jones, T. Wamsat","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2012-08-10T09:13:45Z","title":"A Study of Beam Position Diagnostics with Beam-excited Dipole Higher Order Modes using a Downconverter Test Electronics in Third Harmonic 3.9 GHz Superconducting Accelerating Cavities at FLASH"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.2122","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":"sha256:2ebaa3e01219f4ade90beadf1375ea2b0907fd8e5768b78410af4a0f045dbcb6","target":"record","created_at":"2026-05-18T03:49:00Z","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":"44a1a0d2cb09098efffd248e47b607f86ac6303fe1f34f86e1bb3d2d12d241c2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2012-08-10T09:13:45Z","title_canon_sha256":"2bab00c57d08dbaf3c54024a142a56cb2219abe33439d7a596675ccdac56e8ef"},"schema_version":"1.0","source":{"id":"1208.2122","kind":"arxiv","version":1}},"canonical_sha256":"f4c19597cbfaf9c1bb62926793e6b67c9c0c0687fc0dd275b458661930df63fa","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f4c19597cbfaf9c1bb62926793e6b67c9c0c0687fc0dd275b458661930df63fa","first_computed_at":"2026-05-18T03:49:00.074337Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:49:00.074337Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ac+DZoGJkfNp/kFm8yH62dwfs3KXsMJijaepWDaeLl08R2FdS+6QK3R0OzRcQ6seQ6q8NvU+9QiuattUrdKUCg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:49:00.075077Z","signed_message":"canonical_sha256_bytes"},"source_id":"1208.2122","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2ebaa3e01219f4ade90beadf1375ea2b0907fd8e5768b78410af4a0f045dbcb6","sha256:4a52d311001fda4c663e2629281ededb11fffe3cb7aad68c3c3249b95545e0ae"],"state_sha256":"f5723ec766aa727ef36d56fbac9d5d4dd298055d30686f4ce5d4ebc1b3047ff6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9W/ZA0W+ilP8Ytz+ZwaVvpb36HOn/l/faJm8W+0DRg3ycbDKI1qMKoGKyH8da+ysmC5n8AhwQNAL4oAzHNHcAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T04:25:50.814233Z","bundle_sha256":"6a4cb03af845a851556932458bc1be38c3d1cee6c582b786e646bd7981ba7c73"}}