{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:GPBDEFJPWRNMHX5ULTFIRPL6MJ","short_pith_number":"pith:GPBDEFJP","canonical_record":{"source":{"id":"1710.09568","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2017-10-26T07:43:53Z","cross_cats_sorted":[],"title_canon_sha256":"3122ba21a16ad1387e331765a80dce5b1ea02b225f5894f6cc059912965a9a0a","abstract_canon_sha256":"d25791b1eeeb4c84d94525479bb8c97dafc71a4d60668fb454cde452621edbd7"},"schema_version":"1.0"},"canonical_sha256":"33c232152fb45ac3dfb45cca88bd7e62636c0b133918ad66387c5fc9851de2d1","source":{"kind":"arxiv","id":"1710.09568","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1710.09568","created_at":"2026-05-17T23:59:10Z"},{"alias_kind":"arxiv_version","alias_value":"1710.09568v2","created_at":"2026-05-17T23:59:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1710.09568","created_at":"2026-05-17T23:59:10Z"},{"alias_kind":"pith_short_12","alias_value":"GPBDEFJPWRNM","created_at":"2026-05-18T12:31:18Z"},{"alias_kind":"pith_short_16","alias_value":"GPBDEFJPWRNMHX5U","created_at":"2026-05-18T12:31:18Z"},{"alias_kind":"pith_short_8","alias_value":"GPBDEFJP","created_at":"2026-05-18T12:31:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:GPBDEFJPWRNMHX5ULTFIRPL6MJ","target":"record","payload":{"canonical_record":{"source":{"id":"1710.09568","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2017-10-26T07:43:53Z","cross_cats_sorted":[],"title_canon_sha256":"3122ba21a16ad1387e331765a80dce5b1ea02b225f5894f6cc059912965a9a0a","abstract_canon_sha256":"d25791b1eeeb4c84d94525479bb8c97dafc71a4d60668fb454cde452621edbd7"},"schema_version":"1.0"},"canonical_sha256":"33c232152fb45ac3dfb45cca88bd7e62636c0b133918ad66387c5fc9851de2d1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:59:10.118893Z","signature_b64":"YcmpYwYoT2WkcYKXt1TIO748PDcRnF8Dx1SaI7eaXSLRkUTS20lIXw4sJ/RvZlFiMSEoH5IB80GmPVjkSyoKBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"33c232152fb45ac3dfb45cca88bd7e62636c0b133918ad66387c5fc9851de2d1","last_reissued_at":"2026-05-17T23:59:10.118282Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:59:10.118282Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1710.09568","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":"2026-05-17T23:59:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LOaclY0ldoAvqPqE4qqRllN63kW6yTYdPOt4nejGPR2AsVeRr/7wMHGsTuwNLVvYdLtaCNpunccjo1Nyxed5Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-30T00:54:15.971357Z"},"content_sha256":"6df7095563bc21185e12645737bfe83b3cdd4e94b5277b0140d4980f0d45d80f","schema_version":"1.0","event_id":"sha256:6df7095563bc21185e12645737bfe83b3cdd4e94b5277b0140d4980f0d45d80f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:GPBDEFJPWRNMHX5ULTFIRPL6MJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Continuous bunch-by-bunch spectroscopic investigation of the micro-bunching instability","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.acc-ph","authors_text":"Anke-Susanne M\\\"uller, Benjamin Kehrer, Erik Br\\\"undermann, Johannes L. Steinmann, Lorenzo Rota, Marcel Schuh, Marc Weber, Michael Siegel, Michele Caselle, Miriam Brosi, Patrik Sch\\\"onfeldt, Tobias Boltz","submitted_at":"2017-10-26T07:43:53Z","abstract_excerpt":"Electron accelerators and synchrotrons can be operated to provide short emission pulses due to longitudinally compressed or sub-structured electron bunches. Above a threshold current, the high charge density leads to the micro-bunching instability and the formation of sub-structures on the bunch shape. These time-varying sub-structures on bunches of picoseconds-long duration lead to bursts of coherent synchrotron radiation in the terahertz frequency range. Therefore, the spectral information in this range contains valuable information about the bunch length, shape and sub-structures. Based on "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1710.09568","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":"2026-05-17T23:59:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ADI+GTuzBz5XTQ41+Eg7VY3RnrHdoUzDJhv5RCP+5Y0Ybbsz+dRiC2fl4sq6zrXESaBwdkqP0SaxzOipI6p2CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-30T00:54:15.971934Z"},"content_sha256":"983b604b189d0e2e1ca1633b396d5afc8c29df61d77e59e66736083e8ebd7be6","schema_version":"1.0","event_id":"sha256:983b604b189d0e2e1ca1633b396d5afc8c29df61d77e59e66736083e8ebd7be6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GPBDEFJPWRNMHX5ULTFIRPL6MJ/bundle.json","state_url":"https://pith.science/pith/GPBDEFJPWRNMHX5ULTFIRPL6MJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GPBDEFJPWRNMHX5ULTFIRPL6MJ/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":"2026-06-30T00:54:15Z","links":{"resolver":"https://pith.science/pith/GPBDEFJPWRNMHX5ULTFIRPL6MJ","bundle":"https://pith.science/pith/GPBDEFJPWRNMHX5ULTFIRPL6MJ/bundle.json","state":"https://pith.science/pith/GPBDEFJPWRNMHX5ULTFIRPL6MJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GPBDEFJPWRNMHX5ULTFIRPL6MJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:GPBDEFJPWRNMHX5ULTFIRPL6MJ","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":"d25791b1eeeb4c84d94525479bb8c97dafc71a4d60668fb454cde452621edbd7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2017-10-26T07:43:53Z","title_canon_sha256":"3122ba21a16ad1387e331765a80dce5b1ea02b225f5894f6cc059912965a9a0a"},"schema_version":"1.0","source":{"id":"1710.09568","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1710.09568","created_at":"2026-05-17T23:59:10Z"},{"alias_kind":"arxiv_version","alias_value":"1710.09568v2","created_at":"2026-05-17T23:59:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1710.09568","created_at":"2026-05-17T23:59:10Z"},{"alias_kind":"pith_short_12","alias_value":"GPBDEFJPWRNM","created_at":"2026-05-18T12:31:18Z"},{"alias_kind":"pith_short_16","alias_value":"GPBDEFJPWRNMHX5U","created_at":"2026-05-18T12:31:18Z"},{"alias_kind":"pith_short_8","alias_value":"GPBDEFJP","created_at":"2026-05-18T12:31:18Z"}],"graph_snapshots":[{"event_id":"sha256:983b604b189d0e2e1ca1633b396d5afc8c29df61d77e59e66736083e8ebd7be6","target":"graph","created_at":"2026-05-17T23:59:10Z","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":"Electron accelerators and synchrotrons can be operated to provide short emission pulses due to longitudinally compressed or sub-structured electron bunches. Above a threshold current, the high charge density leads to the micro-bunching instability and the formation of sub-structures on the bunch shape. These time-varying sub-structures on bunches of picoseconds-long duration lead to bursts of coherent synchrotron radiation in the terahertz frequency range. Therefore, the spectral information in this range contains valuable information about the bunch length, shape and sub-structures. Based on ","authors_text":"Anke-Susanne M\\\"uller, Benjamin Kehrer, Erik Br\\\"undermann, Johannes L. Steinmann, Lorenzo Rota, Marcel Schuh, Marc Weber, Michael Siegel, Michele Caselle, Miriam Brosi, Patrik Sch\\\"onfeldt, Tobias Boltz","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2017-10-26T07:43:53Z","title":"Continuous bunch-by-bunch spectroscopic investigation of the micro-bunching instability"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1710.09568","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":"sha256:6df7095563bc21185e12645737bfe83b3cdd4e94b5277b0140d4980f0d45d80f","target":"record","created_at":"2026-05-17T23:59:10Z","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":"d25791b1eeeb4c84d94525479bb8c97dafc71a4d60668fb454cde452621edbd7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2017-10-26T07:43:53Z","title_canon_sha256":"3122ba21a16ad1387e331765a80dce5b1ea02b225f5894f6cc059912965a9a0a"},"schema_version":"1.0","source":{"id":"1710.09568","kind":"arxiv","version":2}},"canonical_sha256":"33c232152fb45ac3dfb45cca88bd7e62636c0b133918ad66387c5fc9851de2d1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"33c232152fb45ac3dfb45cca88bd7e62636c0b133918ad66387c5fc9851de2d1","first_computed_at":"2026-05-17T23:59:10.118282Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:59:10.118282Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"YcmpYwYoT2WkcYKXt1TIO748PDcRnF8Dx1SaI7eaXSLRkUTS20lIXw4sJ/RvZlFiMSEoH5IB80GmPVjkSyoKBg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:59:10.118893Z","signed_message":"canonical_sha256_bytes"},"source_id":"1710.09568","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6df7095563bc21185e12645737bfe83b3cdd4e94b5277b0140d4980f0d45d80f","sha256:983b604b189d0e2e1ca1633b396d5afc8c29df61d77e59e66736083e8ebd7be6"],"state_sha256":"159279104399f28b16d0cd86b301755d803f1ffb30fe95fa34f41752263c3c3c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"E9d7fZViD7bSorJlLqfmN1Pg09TIlk83C0S5qnocWt6CzkTqo05+6QCg6NNkYZTPulX/fLZuSZpWSM/ntE5aBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-30T00:54:15.974608Z","bundle_sha256":"a9b5da3b829b01d8ee32a15923009aeb1f489dd1185dd318534470b922df211f"}}