{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:JWY3Q6TOF7G4SRODZZZR6N73EH","short_pith_number":"pith:JWY3Q6TO","canonical_record":{"source":{"id":"2010.15791","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2020-10-29T17:33:13Z","cross_cats_sorted":[],"title_canon_sha256":"c0bb52612e883d6adcab60ded0f43ef1e9a73fd6908db74152862a68e527d46f","abstract_canon_sha256":"8e8a93467dfb265324615ce0166c484dbcf7f01a0cbc4e9d693001aeb011ee7c"},"schema_version":"1.0"},"canonical_sha256":"4db1b87a6e2fcdc945c3ce731f37fb21fbab0e8987fa438c5ab47b0d5bba7840","source":{"kind":"arxiv","id":"2010.15791","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2010.15791","created_at":"2026-07-05T02:05:09Z"},{"alias_kind":"arxiv_version","alias_value":"2010.15791v1","created_at":"2026-07-05T02:05:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2010.15791","created_at":"2026-07-05T02:05:09Z"},{"alias_kind":"pith_short_12","alias_value":"JWY3Q6TOF7G4","created_at":"2026-07-05T02:05:09Z"},{"alias_kind":"pith_short_16","alias_value":"JWY3Q6TOF7G4SROD","created_at":"2026-07-05T02:05:09Z"},{"alias_kind":"pith_short_8","alias_value":"JWY3Q6TO","created_at":"2026-07-05T02:05:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:JWY3Q6TOF7G4SRODZZZR6N73EH","target":"record","payload":{"canonical_record":{"source":{"id":"2010.15791","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2020-10-29T17:33:13Z","cross_cats_sorted":[],"title_canon_sha256":"c0bb52612e883d6adcab60ded0f43ef1e9a73fd6908db74152862a68e527d46f","abstract_canon_sha256":"8e8a93467dfb265324615ce0166c484dbcf7f01a0cbc4e9d693001aeb011ee7c"},"schema_version":"1.0"},"canonical_sha256":"4db1b87a6e2fcdc945c3ce731f37fb21fbab0e8987fa438c5ab47b0d5bba7840","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:05:09.489937Z","signature_b64":"vtj4owXES2NOBnsSdsWWsdM7P9iDMhoE5ilHtnNyO+jI3eHSzy/kw2KMsyfRuQK3AIR3K+7p5EvEcqNBareCBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4db1b87a6e2fcdc945c3ce731f37fb21fbab0e8987fa438c5ab47b0d5bba7840","last_reissued_at":"2026-07-05T02:05:09.489509Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:05:09.489509Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2010.15791","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":"2026-07-05T02:05:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5OoRv2y0VgcDGIx/3S4vh9wiacR9ZXmnFqkDMbva9fOweF6U78E4w+iE0Qxrp+TilxU3cZo7yjIkDa9he1OrCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T13:56:38.966869Z"},"content_sha256":"0c4c0eaff075fa48efaa58eb4d49baf9a9a66dc6e80ba450b978e1c668b48512","schema_version":"1.0","event_id":"sha256:0c4c0eaff075fa48efaa58eb4d49baf9a9a66dc6e80ba450b978e1c668b48512"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:JWY3Q6TOF7G4SRODZZZR6N73EH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Demonstration of electron cooling using a pulsed beam from an electrostatic electron cooler","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.acc-ph","authors_text":"A. Hutton, A. Sy, China), H. Wang, H. W. Zhao (Institute of Modern Physics, H. Zhang, H. Zhao, J. C. Yang, J. Li, K. Jordan, L. J. Mao, M. T. Tang, M. W. Bruker, R. Rimmer, S. Benson, S. Wang, T. Powers, T. Satogata, USA) F. Ma, X. D. Yang, X. M. Ma, X. P. Sha, Y. Zhang (Jefferson Lab","submitted_at":"2020-10-29T17:33:13Z","abstract_excerpt":"Cooling of hadron beams is critically important in the next generation of hadron storage rings for delivery of unprecedented performance. One such application is the electron-ion collider presently under development in the US. The desire to develop electron coolers for operation at much higher energies than previously achieved necessitates the use of radio-frequency (RF) fields for acceleration as opposed to the conventional, electrostatic approach. While electron cooling is a mature technology at low energy utilizing a DC beam, RF acceleration requires the cooling beam to be bunched, thus ext"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2010.15791","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2010.15791/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T02:05:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LYFGFjv+zHYl8kMqpgl0lkURbl6KB+ks2x3lyyT3qryF7bpnECeJPzwluuhcVOCRxSZY37XP9LXnZIF0V1OzBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T13:56:38.967741Z"},"content_sha256":"44893ad3ad1a48842a5d0eb06550876822f8fce8e6e87b42087d948a1dc1f78e","schema_version":"1.0","event_id":"sha256:44893ad3ad1a48842a5d0eb06550876822f8fce8e6e87b42087d948a1dc1f78e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JWY3Q6TOF7G4SRODZZZR6N73EH/bundle.json","state_url":"https://pith.science/pith/JWY3Q6TOF7G4SRODZZZR6N73EH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JWY3Q6TOF7G4SRODZZZR6N73EH/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":"2026-08-14T13:56:38Z","links":{"resolver":"https://pith.science/pith/JWY3Q6TOF7G4SRODZZZR6N73EH","bundle":"https://pith.science/pith/JWY3Q6TOF7G4SRODZZZR6N73EH/bundle.json","state":"https://pith.science/pith/JWY3Q6TOF7G4SRODZZZR6N73EH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JWY3Q6TOF7G4SRODZZZR6N73EH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:JWY3Q6TOF7G4SRODZZZR6N73EH","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":"8e8a93467dfb265324615ce0166c484dbcf7f01a0cbc4e9d693001aeb011ee7c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2020-10-29T17:33:13Z","title_canon_sha256":"c0bb52612e883d6adcab60ded0f43ef1e9a73fd6908db74152862a68e527d46f"},"schema_version":"1.0","source":{"id":"2010.15791","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2010.15791","created_at":"2026-07-05T02:05:09Z"},{"alias_kind":"arxiv_version","alias_value":"2010.15791v1","created_at":"2026-07-05T02:05:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2010.15791","created_at":"2026-07-05T02:05:09Z"},{"alias_kind":"pith_short_12","alias_value":"JWY3Q6TOF7G4","created_at":"2026-07-05T02:05:09Z"},{"alias_kind":"pith_short_16","alias_value":"JWY3Q6TOF7G4SROD","created_at":"2026-07-05T02:05:09Z"},{"alias_kind":"pith_short_8","alias_value":"JWY3Q6TO","created_at":"2026-07-05T02:05:09Z"}],"graph_snapshots":[{"event_id":"sha256:44893ad3ad1a48842a5d0eb06550876822f8fce8e6e87b42087d948a1dc1f78e","target":"graph","created_at":"2026-07-05T02:05:09Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2010.15791/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Cooling of hadron beams is critically important in the next generation of hadron storage rings for delivery of unprecedented performance. One such application is the electron-ion collider presently under development in the US. The desire to develop electron coolers for operation at much higher energies than previously achieved necessitates the use of radio-frequency (RF) fields for acceleration as opposed to the conventional, electrostatic approach. While electron cooling is a mature technology at low energy utilizing a DC beam, RF acceleration requires the cooling beam to be bunched, thus ext","authors_text":"A. Hutton, A. Sy, China), H. Wang, H. W. Zhao (Institute of Modern Physics, H. Zhang, H. Zhao, J. C. Yang, J. Li, K. Jordan, L. J. Mao, M. T. Tang, M. W. Bruker, R. Rimmer, S. Benson, S. Wang, T. Powers, T. Satogata, USA) F. Ma, X. D. Yang, X. M. Ma, X. P. Sha, Y. Zhang (Jefferson Lab","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2020-10-29T17:33:13Z","title":"Demonstration of electron cooling using a pulsed beam from an electrostatic electron cooler"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2010.15791","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":"sha256:0c4c0eaff075fa48efaa58eb4d49baf9a9a66dc6e80ba450b978e1c668b48512","target":"record","created_at":"2026-07-05T02:05:09Z","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":"8e8a93467dfb265324615ce0166c484dbcf7f01a0cbc4e9d693001aeb011ee7c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2020-10-29T17:33:13Z","title_canon_sha256":"c0bb52612e883d6adcab60ded0f43ef1e9a73fd6908db74152862a68e527d46f"},"schema_version":"1.0","source":{"id":"2010.15791","kind":"arxiv","version":1}},"canonical_sha256":"4db1b87a6e2fcdc945c3ce731f37fb21fbab0e8987fa438c5ab47b0d5bba7840","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4db1b87a6e2fcdc945c3ce731f37fb21fbab0e8987fa438c5ab47b0d5bba7840","first_computed_at":"2026-07-05T02:05:09.489509Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:05:09.489509Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"vtj4owXES2NOBnsSdsWWsdM7P9iDMhoE5ilHtnNyO+jI3eHSzy/kw2KMsyfRuQK3AIR3K+7p5EvEcqNBareCBw==","signature_status":"signed_v1","signed_at":"2026-07-05T02:05:09.489937Z","signed_message":"canonical_sha256_bytes"},"source_id":"2010.15791","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0c4c0eaff075fa48efaa58eb4d49baf9a9a66dc6e80ba450b978e1c668b48512","sha256:44893ad3ad1a48842a5d0eb06550876822f8fce8e6e87b42087d948a1dc1f78e"],"state_sha256":"9a92aa4fac41b68e77faaded28d49fcefe703aa04893c86c6bef9bf575d03485"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KcrPWVMVX+VMIYtxb0sQzr/cidziYuQSciOm8lLi6pAVHCjqe0R2ADIRPdVjOIVSUAaSOEdVyKPLFcwb6NORBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-14T13:56:38.972897Z","bundle_sha256":"dd9f1a15eab8c37489c427ba4f10d3c921c636093ea188ebef93654735fe2310"}}