{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:3DWM2WXKAN3TSVU6E6TIUV7I2F","short_pith_number":"pith:3DWM2WXK","schema_version":"1.0","canonical_sha256":"d8eccd5aea037739569e27a68a57e8d17d9891924b7fa988e8c8f545b97d490f","source":{"kind":"arxiv","id":"1502.04627","version":1},"attestation_state":"computed","paper":{"title":"Theoretical computation of the polarization characteristics of an X-ray Free-Electron Laser with planar undulator","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.acc-ph","authors_text":"Evgeni Saldin, Gianluca Geloni, Vitali Kocharyan","submitted_at":"2015-02-16T17:03:48Z","abstract_excerpt":"We show that radiation pulses from an X-ray Free-Electron Laser (XFEL) with a planar undulator, which are mainly polarized in the horizontal direction, exhibit a suppression of the vertical polarization component of the power at least by a factor $\\lambda_w^2/(4 \\pi L_g)^2$, where $\\lambda_w$ is the length of the undulator period and $L_g$ is the FEL field gain length. We illustrate this fact by examining the XFEL operation under the steady state assumption. In our calculations we considered only resonance terms: in fact, non resonance terms are suppressed by a factor $\\lambda_w^3/(4 \\pi L_g)^"},"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":"1502.04627","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2015-02-16T17:03:48Z","cross_cats_sorted":[],"title_canon_sha256":"ed447976a4ced1911a2d9a78a6a5905241bea9186a126dca55d766cd75b4cba8","abstract_canon_sha256":"62bf9da64b167694f8728618a5052d12a8139a2aa9f004ee47ff19e3fe60c174"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:31:45.567507Z","signature_b64":"ma0XWWGfGPF6DdKH4xkVJfj56LctvFD5FbeYu34oATzk6kfyfgoFftsJ0CFGsTM/lv+vjvzU9RS01smLcHoiDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d8eccd5aea037739569e27a68a57e8d17d9891924b7fa988e8c8f545b97d490f","last_reissued_at":"2026-05-18T01:31:45.567008Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:31:45.567008Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Theoretical computation of the polarization characteristics of an X-ray Free-Electron Laser with planar undulator","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.acc-ph","authors_text":"Evgeni Saldin, Gianluca Geloni, Vitali Kocharyan","submitted_at":"2015-02-16T17:03:48Z","abstract_excerpt":"We show that radiation pulses from an X-ray Free-Electron Laser (XFEL) with a planar undulator, which are mainly polarized in the horizontal direction, exhibit a suppression of the vertical polarization component of the power at least by a factor $\\lambda_w^2/(4 \\pi L_g)^2$, where $\\lambda_w$ is the length of the undulator period and $L_g$ is the FEL field gain length. We illustrate this fact by examining the XFEL operation under the steady state assumption. In our calculations we considered only resonance terms: in fact, non resonance terms are suppressed by a factor $\\lambda_w^3/(4 \\pi L_g)^"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1502.04627","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":"1502.04627","created_at":"2026-05-18T01:31:45.567077+00:00"},{"alias_kind":"arxiv_version","alias_value":"1502.04627v1","created_at":"2026-05-18T01:31:45.567077+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1502.04627","created_at":"2026-05-18T01:31:45.567077+00:00"},{"alias_kind":"pith_short_12","alias_value":"3DWM2WXKAN3T","created_at":"2026-05-18T12:29:02.477457+00:00"},{"alias_kind":"pith_short_16","alias_value":"3DWM2WXKAN3TSVU6","created_at":"2026-05-18T12:29:02.477457+00:00"},{"alias_kind":"pith_short_8","alias_value":"3DWM2WXK","created_at":"2026-05-18T12:29:02.477457+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/3DWM2WXKAN3TSVU6E6TIUV7I2F","json":"https://pith.science/pith/3DWM2WXKAN3TSVU6E6TIUV7I2F.json","graph_json":"https://pith.science/api/pith-number/3DWM2WXKAN3TSVU6E6TIUV7I2F/graph.json","events_json":"https://pith.science/api/pith-number/3DWM2WXKAN3TSVU6E6TIUV7I2F/events.json","paper":"https://pith.science/paper/3DWM2WXK"},"agent_actions":{"view_html":"https://pith.science/pith/3DWM2WXKAN3TSVU6E6TIUV7I2F","download_json":"https://pith.science/pith/3DWM2WXKAN3TSVU6E6TIUV7I2F.json","view_paper":"https://pith.science/paper/3DWM2WXK","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1502.04627&json=true","fetch_graph":"https://pith.science/api/pith-number/3DWM2WXKAN3TSVU6E6TIUV7I2F/graph.json","fetch_events":"https://pith.science/api/pith-number/3DWM2WXKAN3TSVU6E6TIUV7I2F/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/3DWM2WXKAN3TSVU6E6TIUV7I2F/action/timestamp_anchor","attest_storage":"https://pith.science/pith/3DWM2WXKAN3TSVU6E6TIUV7I2F/action/storage_attestation","attest_author":"https://pith.science/pith/3DWM2WXKAN3TSVU6E6TIUV7I2F/action/author_attestation","sign_citation":"https://pith.science/pith/3DWM2WXKAN3TSVU6E6TIUV7I2F/action/citation_signature","submit_replication":"https://pith.science/pith/3DWM2WXKAN3TSVU6E6TIUV7I2F/action/replication_record"}},"created_at":"2026-05-18T01:31:45.567077+00:00","updated_at":"2026-05-18T01:31:45.567077+00:00"}