{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:BFE2V2YM4VXX4TP76U726CW5SU","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":"13071905afbcfa1ea740c9a2489f4daf84159249055236623ab268972c7a9e58","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2014-05-08T18:01:27Z","title_canon_sha256":"f0274d91f6018bc501293ebd152f5863d3034d0be83b744c76927110e7b5be48"},"schema_version":"1.0","source":{"id":"1405.2033","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1405.2033","created_at":"2026-05-18T02:27:44Z"},{"alias_kind":"arxiv_version","alias_value":"1405.2033v4","created_at":"2026-05-18T02:27:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1405.2033","created_at":"2026-05-18T02:27:44Z"},{"alias_kind":"pith_short_12","alias_value":"BFE2V2YM4VXX","created_at":"2026-05-18T12:28:22Z"},{"alias_kind":"pith_short_16","alias_value":"BFE2V2YM4VXX4TP7","created_at":"2026-05-18T12:28:22Z"},{"alias_kind":"pith_short_8","alias_value":"BFE2V2YM","created_at":"2026-05-18T12:28:22Z"}],"graph_snapshots":[{"event_id":"sha256:6c228924dff287bcd52891326489d0c1273e2a89846d16aacf13fa706caad636","target":"graph","created_at":"2026-05-18T02:27:44Z","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":"Collimation with hollow electron beams is a technique for halo control in high-power hadron beams. It is based on an electron beam (possibly pulsed or modulated in intensity) guided by strong axial magnetic fields which overlaps with the circulating beam in a short section of the ring. The concept was tested experimentally at the Fermilab Tevatron collider using a hollow electron gun installed in one of the Tevatron electron lenses. Within the US LHC Accelerator Research Program (LARP) and the European FP7 HiLumi LHC Design Study, we are proposing a conceptual design for applying this techniqu","authors_text":"Adriana Rossi, Alexander Valishev, Belen Salvachua Ferrando, Giulio Stancari, Roderik Bruce, Stefano Redaelli, Valentina Previtali","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2014-05-08T18:01:27Z","title":"Conceptual design of hollow electron lenses for beam halo control in the Large Hadron Collider"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1405.2033","kind":"arxiv","version":4},"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:fb8e32d83566ef8ed0261ffddab83ef9c8847d54d68ac669fbd0160c559c0fe0","target":"record","created_at":"2026-05-18T02:27:44Z","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":"13071905afbcfa1ea740c9a2489f4daf84159249055236623ab268972c7a9e58","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2014-05-08T18:01:27Z","title_canon_sha256":"f0274d91f6018bc501293ebd152f5863d3034d0be83b744c76927110e7b5be48"},"schema_version":"1.0","source":{"id":"1405.2033","kind":"arxiv","version":4}},"canonical_sha256":"0949aaeb0ce56f7e4dfff53faf0add9501115952e7b400536853b74ee4881f2b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0949aaeb0ce56f7e4dfff53faf0add9501115952e7b400536853b74ee4881f2b","first_computed_at":"2026-05-18T02:27:44.614831Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:27:44.614831Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"7Dnqp0YxNgY5vXfBpJQMgIp72eJ6EfgQDQGim6ouajTNWRSnks+mzSNhdr1s5DkicpC7SC0F4HQXHFeKMIRMBw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:27:44.615282Z","signed_message":"canonical_sha256_bytes"},"source_id":"1405.2033","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fb8e32d83566ef8ed0261ffddab83ef9c8847d54d68ac669fbd0160c559c0fe0","sha256:6c228924dff287bcd52891326489d0c1273e2a89846d16aacf13fa706caad636"],"state_sha256":"0c1edd9e5a5d1504d84feb8b5b9adbe2ff0708381405b8cf090cdc4bf6f238b7"}