{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:U7Z6UDRD3RH7O7UXYVOF5VAB6J","short_pith_number":"pith:U7Z6UDRD","canonical_record":{"source":{"id":"1502.04150","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2015-02-13T23:22:24Z","cross_cats_sorted":[],"title_canon_sha256":"a1a1400dabbb199620455feb8824fecfde1e596c45b59dc9d6ddf65852278052","abstract_canon_sha256":"654b5f6e8f22a73aa0c5cfc2a0e122480aade31c624c3509ae4b52f2873ab5cb"},"schema_version":"1.0"},"canonical_sha256":"a7f3ea0e23dc4ff77e97c55c5ed401f260a1e26c066a49ee3c55ab107e492920","source":{"kind":"arxiv","id":"1502.04150","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1502.04150","created_at":"2026-05-18T01:55:07Z"},{"alias_kind":"arxiv_version","alias_value":"1502.04150v2","created_at":"2026-05-18T01:55:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1502.04150","created_at":"2026-05-18T01:55:07Z"},{"alias_kind":"pith_short_12","alias_value":"U7Z6UDRD3RH7","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_16","alias_value":"U7Z6UDRD3RH7O7UX","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_8","alias_value":"U7Z6UDRD","created_at":"2026-05-18T12:29:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:U7Z6UDRD3RH7O7UXYVOF5VAB6J","target":"record","payload":{"canonical_record":{"source":{"id":"1502.04150","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2015-02-13T23:22:24Z","cross_cats_sorted":[],"title_canon_sha256":"a1a1400dabbb199620455feb8824fecfde1e596c45b59dc9d6ddf65852278052","abstract_canon_sha256":"654b5f6e8f22a73aa0c5cfc2a0e122480aade31c624c3509ae4b52f2873ab5cb"},"schema_version":"1.0"},"canonical_sha256":"a7f3ea0e23dc4ff77e97c55c5ed401f260a1e26c066a49ee3c55ab107e492920","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:55:07.031246Z","signature_b64":"UZB1535BVwCMMAAfUtCLwBF8dYspTdUmI/RBvPoztcV+pqHUHObI++QTWafNhZ4Ps+7hiJpz8jbFNoMzE4kDDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a7f3ea0e23dc4ff77e97c55c5ed401f260a1e26c066a49ee3c55ab107e492920","last_reissued_at":"2026-05-18T01:55:07.030781Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:55:07.030781Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1502.04150","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:55:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"drKEo4DKG+923nMgffxJ0AFBZqT1jFpiUFOwgpJw3Z/jHX19peumPuIfXmT13j1UvVeHWGZE/JqkHIUX7dC5Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T17:52:18.851376Z"},"content_sha256":"22f033cd25795a15c9a33ca87c19e04d9129d150975a21b38dffecde2bc07139","schema_version":"1.0","event_id":"sha256:22f033cd25795a15c9a33ca87c19e04d9129d150975a21b38dffecde2bc07139"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:U7Z6UDRD3RH7O7UXYVOF5VAB6J","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Observation of Wakefields and Resonances in Coherent Synchrotron Radiation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.acc-ph","authors_text":"B. E. Billinghurst, C. Baribeau, D. A. Bizzozero, J. C. Bergstrom, J. M. Vogt, L. Dallin, R. Warnock, S. Kramer, T. Batten, T. E. May, W. A. Wurtz","submitted_at":"2015-02-13T23:22:24Z","abstract_excerpt":"We report on high resolution measurements of resonances in the spectrum of coherent synchrotron radiation (CSR) at the Canadian Light Source (CLS). The resonances permeate the spectrum at wavenumber intervals of $0.074 ~\\textrm{cm}^{-1}$, and are highly stable under changes in the machine setup (energy, bucket filling pattern, CSR in bursting or continuous mode). Analogous resonances were predicted long ago in an idealized theory as eigenmodes of a smooth toroidal vacuum chamber driven by a bunched beam moving on a circular orbit. A corollary of peaks in the spectrum is the presence of pulses "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1502.04150","kind":"arxiv","version":2},"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":"2026-05-18T01:55:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BCMO3yUUjODTJKEoQgqHjoq0BVn74SlY7hV5Orum+4UnSau+G2u/F26s67lQ+JaaQEYjQpG1VHsKHiNAcO/lDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T17:52:18.851741Z"},"content_sha256":"5575f0a504859c3ab978ea9ca827cf4127293fe2e9a7b546461a5f9a6d3163bb","schema_version":"1.0","event_id":"sha256:5575f0a504859c3ab978ea9ca827cf4127293fe2e9a7b546461a5f9a6d3163bb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/U7Z6UDRD3RH7O7UXYVOF5VAB6J/bundle.json","state_url":"https://pith.science/pith/U7Z6UDRD3RH7O7UXYVOF5VAB6J/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/U7Z6UDRD3RH7O7UXYVOF5VAB6J/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":"2026-06-07T17:52:18Z","links":{"resolver":"https://pith.science/pith/U7Z6UDRD3RH7O7UXYVOF5VAB6J","bundle":"https://pith.science/pith/U7Z6UDRD3RH7O7UXYVOF5VAB6J/bundle.json","state":"https://pith.science/pith/U7Z6UDRD3RH7O7UXYVOF5VAB6J/state.json","well_known_bundle":"https://pith.science/.well-known/pith/U7Z6UDRD3RH7O7UXYVOF5VAB6J/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:U7Z6UDRD3RH7O7UXYVOF5VAB6J","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":"654b5f6e8f22a73aa0c5cfc2a0e122480aade31c624c3509ae4b52f2873ab5cb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2015-02-13T23:22:24Z","title_canon_sha256":"a1a1400dabbb199620455feb8824fecfde1e596c45b59dc9d6ddf65852278052"},"schema_version":"1.0","source":{"id":"1502.04150","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1502.04150","created_at":"2026-05-18T01:55:07Z"},{"alias_kind":"arxiv_version","alias_value":"1502.04150v2","created_at":"2026-05-18T01:55:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1502.04150","created_at":"2026-05-18T01:55:07Z"},{"alias_kind":"pith_short_12","alias_value":"U7Z6UDRD3RH7","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_16","alias_value":"U7Z6UDRD3RH7O7UX","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_8","alias_value":"U7Z6UDRD","created_at":"2026-05-18T12:29:44Z"}],"graph_snapshots":[{"event_id":"sha256:5575f0a504859c3ab978ea9ca827cf4127293fe2e9a7b546461a5f9a6d3163bb","target":"graph","created_at":"2026-05-18T01:55:07Z","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 report on high resolution measurements of resonances in the spectrum of coherent synchrotron radiation (CSR) at the Canadian Light Source (CLS). The resonances permeate the spectrum at wavenumber intervals of $0.074 ~\\textrm{cm}^{-1}$, and are highly stable under changes in the machine setup (energy, bucket filling pattern, CSR in bursting or continuous mode). Analogous resonances were predicted long ago in an idealized theory as eigenmodes of a smooth toroidal vacuum chamber driven by a bunched beam moving on a circular orbit. A corollary of peaks in the spectrum is the presence of pulses ","authors_text":"B. E. Billinghurst, C. Baribeau, D. A. Bizzozero, J. C. Bergstrom, J. M. Vogt, L. Dallin, R. Warnock, S. Kramer, T. Batten, T. E. May, W. A. Wurtz","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2015-02-13T23:22:24Z","title":"Observation of Wakefields and Resonances in Coherent Synchrotron Radiation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1502.04150","kind":"arxiv","version":2},"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":"sha256:22f033cd25795a15c9a33ca87c19e04d9129d150975a21b38dffecde2bc07139","target":"record","created_at":"2026-05-18T01:55:07Z","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":"654b5f6e8f22a73aa0c5cfc2a0e122480aade31c624c3509ae4b52f2873ab5cb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2015-02-13T23:22:24Z","title_canon_sha256":"a1a1400dabbb199620455feb8824fecfde1e596c45b59dc9d6ddf65852278052"},"schema_version":"1.0","source":{"id":"1502.04150","kind":"arxiv","version":2}},"canonical_sha256":"a7f3ea0e23dc4ff77e97c55c5ed401f260a1e26c066a49ee3c55ab107e492920","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a7f3ea0e23dc4ff77e97c55c5ed401f260a1e26c066a49ee3c55ab107e492920","first_computed_at":"2026-05-18T01:55:07.030781Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:55:07.030781Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"UZB1535BVwCMMAAfUtCLwBF8dYspTdUmI/RBvPoztcV+pqHUHObI++QTWafNhZ4Ps+7hiJpz8jbFNoMzE4kDDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:55:07.031246Z","signed_message":"canonical_sha256_bytes"},"source_id":"1502.04150","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:22f033cd25795a15c9a33ca87c19e04d9129d150975a21b38dffecde2bc07139","sha256:5575f0a504859c3ab978ea9ca827cf4127293fe2e9a7b546461a5f9a6d3163bb"],"state_sha256":"e43ee5ae6b2b9b8cd5688d4d93c930d54353fffa3b676666803feb680d48768c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KKYRRtuZ3nyWM0EluhAMnjOpAV+UExU/qUcrdWirgNZSbYIb66VBa/xkoRRiE/pYTALkKURlNcyGLSpdf+uvDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-07T17:52:18.854660Z","bundle_sha256":"5b48c3af7d15cdd5cbfbc72ca383804d793b6ba9fd6509222e9e998fe6fc4a46"}}