{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2014:NAYUV332G3UQFRKIMXBV2GC3QY","short_pith_number":"pith:NAYUV332","schema_version":"1.0","canonical_sha256":"68314aef7a36e902c54865c35d185b86133283ba1c415d07b2aa44f1f3d176bf","source":{"kind":"arxiv","id":"1403.0465","version":1},"attestation_state":"computed","paper":{"title":"Prospects for CW and LP operation of the European XFEL in hard X-ray regime","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.acc-ph","authors_text":"E.A. Schneidmiller, J. Sekutowicz, M.V. Yurkov, R. Brinkmann","submitted_at":"2014-03-03T15:36:05Z","abstract_excerpt":"The European XFEL will operate nominally at 17.5 GeV in SP (short pulse) mode with 0.65 ms long bunch train and 10 Hz repetition rate. A possible upgrade of the linac to CW (continuous wave) or LP (long pulse) modes with a corresponding reduction of electron beam energy is under discussion since many years. Recent successes in the dedicated R&D program allow to forecast a technical feasibility of such an upgrade in the foreseeable future. One of the challenges is to provide sub-Angstrom FEL operation in CW and LP modes. In this paper we perform a preliminary analysis of a possible operation of"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1403.0465","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2014-03-03T15:36:05Z","cross_cats_sorted":[],"title_canon_sha256":"8c10787285e4127e41311cba84ac123e939db09c15b83dbd0f238c9d6405b7cf","abstract_canon_sha256":"749836dc0ad939bf7872aab23f16fd9305f476b87a9ca705bbe5c4f13dab6814"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:44:20.962913Z","signature_b64":"g/M95mgWwRsgDrel1l8S7E0IKicchReMTfJjeueUd8HQFgG4E7M13f11F6rMgilYu1FHrpKZ/tGEyr7x7O8kDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"68314aef7a36e902c54865c35d185b86133283ba1c415d07b2aa44f1f3d176bf","last_reissued_at":"2026-05-18T01:44:20.962360Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:44:20.962360Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Prospects for CW and LP operation of the European XFEL in hard X-ray regime","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.acc-ph","authors_text":"E.A. Schneidmiller, J. Sekutowicz, M.V. Yurkov, R. Brinkmann","submitted_at":"2014-03-03T15:36:05Z","abstract_excerpt":"The European XFEL will operate nominally at 17.5 GeV in SP (short pulse) mode with 0.65 ms long bunch train and 10 Hz repetition rate. A possible upgrade of the linac to CW (continuous wave) or LP (long pulse) modes with a corresponding reduction of electron beam energy is under discussion since many years. Recent successes in the dedicated R&D program allow to forecast a technical feasibility of such an upgrade in the foreseeable future. One of the challenges is to provide sub-Angstrom FEL operation in CW and LP modes. In this paper we perform a preliminary analysis of a possible operation of"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1403.0465","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1403.0465","created_at":"2026-05-18T01:44:20.962442+00:00"},{"alias_kind":"arxiv_version","alias_value":"1403.0465v1","created_at":"2026-05-18T01:44:20.962442+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1403.0465","created_at":"2026-05-18T01:44:20.962442+00:00"},{"alias_kind":"pith_short_12","alias_value":"NAYUV332G3UQ","created_at":"2026-05-18T12:28:41.024544+00:00"},{"alias_kind":"pith_short_16","alias_value":"NAYUV332G3UQFRKI","created_at":"2026-05-18T12:28:41.024544+00:00"},{"alias_kind":"pith_short_8","alias_value":"NAYUV332","created_at":"2026-05-18T12:28:41.024544+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/NAYUV332G3UQFRKIMXBV2GC3QY","json":"https://pith.science/pith/NAYUV332G3UQFRKIMXBV2GC3QY.json","graph_json":"https://pith.science/api/pith-number/NAYUV332G3UQFRKIMXBV2GC3QY/graph.json","events_json":"https://pith.science/api/pith-number/NAYUV332G3UQFRKIMXBV2GC3QY/events.json","paper":"https://pith.science/paper/NAYUV332"},"agent_actions":{"view_html":"https://pith.science/pith/NAYUV332G3UQFRKIMXBV2GC3QY","download_json":"https://pith.science/pith/NAYUV332G3UQFRKIMXBV2GC3QY.json","view_paper":"https://pith.science/paper/NAYUV332","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1403.0465&json=true","fetch_graph":"https://pith.science/api/pith-number/NAYUV332G3UQFRKIMXBV2GC3QY/graph.json","fetch_events":"https://pith.science/api/pith-number/NAYUV332G3UQFRKIMXBV2GC3QY/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/NAYUV332G3UQFRKIMXBV2GC3QY/action/timestamp_anchor","attest_storage":"https://pith.science/pith/NAYUV332G3UQFRKIMXBV2GC3QY/action/storage_attestation","attest_author":"https://pith.science/pith/NAYUV332G3UQFRKIMXBV2GC3QY/action/author_attestation","sign_citation":"https://pith.science/pith/NAYUV332G3UQFRKIMXBV2GC3QY/action/citation_signature","submit_replication":"https://pith.science/pith/NAYUV332G3UQFRKIMXBV2GC3QY/action/replication_record"}},"created_at":"2026-05-18T01:44:20.962442+00:00","updated_at":"2026-05-18T01:44:20.962442+00:00"}