{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2014:3D3LIFQ6XZ44L73HTQNEJL5F5E","short_pith_number":"pith:3D3LIFQ6","schema_version":"1.0","canonical_sha256":"d8f6b4161ebe79c5ff679c1a44afa5e929bc92cc64ad09dc48fddd09d61b95e9","source":{"kind":"arxiv","id":"1403.1652","version":2},"attestation_state":"computed","paper":{"title":"Variable-delay Polarization Modulators for Cryogenic Millimeter-wave Applications","license":"http://creativecommons.org/licenses/publicdomain/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Alan J. Kogut, Dale J. Fixsen, David T. Chuss, Edward J. Wollack, Eric Switzer, George M. Voellmer, James Hinderks, Joseph R. Eimer, Justin Lazear, Paul Mirel","submitted_at":"2014-03-07T04:10:49Z","abstract_excerpt":"We describe the design, construction, and initial validation of the variable-delay polarization modulator (VPM) designed for the PIPER cosmic microwave background polarimeter. The VPM modulates between linear and circular polarization by introducing a variable phase delay between orthogonal linear polarizations. Each VPM has a diameter of 39 cm and is engineered to operate in a cryogenic environment (1.5 K). We describe the mechanical design and performance of the kinematic double-blade flexure and drive mechanism along with the construction of the high precision wire grid polarizers."},"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":"1403.1652","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/publicdomain/","primary_cat":"astro-ph.IM","submitted_at":"2014-03-07T04:10:49Z","cross_cats_sorted":[],"title_canon_sha256":"fe243fafe733fa30f73f4145e782af6cf1c3bab79fe14144c3be906faf8a520d","abstract_canon_sha256":"f1dcc22803668e67840dc845327093585b553e51084ab7f1a21f0bc1c85b3de2"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:44:18.616938Z","signature_b64":"qCnl8GlllbYl+kBPYSDWa2TMN3IaAa34PC9f/OQXkpI7P6HMM+l24ap5rpk82Po8eRR1g+MXrhvjGj+nIb7GBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d8f6b4161ebe79c5ff679c1a44afa5e929bc92cc64ad09dc48fddd09d61b95e9","last_reissued_at":"2026-05-18T01:44:18.616334Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:44:18.616334Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Variable-delay Polarization Modulators for Cryogenic Millimeter-wave Applications","license":"http://creativecommons.org/licenses/publicdomain/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Alan J. Kogut, Dale J. Fixsen, David T. Chuss, Edward J. Wollack, Eric Switzer, George M. Voellmer, James Hinderks, Joseph R. Eimer, Justin Lazear, Paul Mirel","submitted_at":"2014-03-07T04:10:49Z","abstract_excerpt":"We describe the design, construction, and initial validation of the variable-delay polarization modulator (VPM) designed for the PIPER cosmic microwave background polarimeter. The VPM modulates between linear and circular polarization by introducing a variable phase delay between orthogonal linear polarizations. Each VPM has a diameter of 39 cm and is engineered to operate in a cryogenic environment (1.5 K). We describe the mechanical design and performance of the kinematic double-blade flexure and drive mechanism along with the construction of the high precision wire grid polarizers."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1403.1652","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1403.1652","created_at":"2026-05-18T01:44:18.616446+00:00"},{"alias_kind":"arxiv_version","alias_value":"1403.1652v2","created_at":"2026-05-18T01:44:18.616446+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1403.1652","created_at":"2026-05-18T01:44:18.616446+00:00"},{"alias_kind":"pith_short_12","alias_value":"3D3LIFQ6XZ44","created_at":"2026-05-18T12:28:11.866339+00:00"},{"alias_kind":"pith_short_16","alias_value":"3D3LIFQ6XZ44L73H","created_at":"2026-05-18T12:28:11.866339+00:00"},{"alias_kind":"pith_short_8","alias_value":"3D3LIFQ6","created_at":"2026-05-18T12:28:11.866339+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/3D3LIFQ6XZ44L73HTQNEJL5F5E","json":"https://pith.science/pith/3D3LIFQ6XZ44L73HTQNEJL5F5E.json","graph_json":"https://pith.science/api/pith-number/3D3LIFQ6XZ44L73HTQNEJL5F5E/graph.json","events_json":"https://pith.science/api/pith-number/3D3LIFQ6XZ44L73HTQNEJL5F5E/events.json","paper":"https://pith.science/paper/3D3LIFQ6"},"agent_actions":{"view_html":"https://pith.science/pith/3D3LIFQ6XZ44L73HTQNEJL5F5E","download_json":"https://pith.science/pith/3D3LIFQ6XZ44L73HTQNEJL5F5E.json","view_paper":"https://pith.science/paper/3D3LIFQ6","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1403.1652&json=true","fetch_graph":"https://pith.science/api/pith-number/3D3LIFQ6XZ44L73HTQNEJL5F5E/graph.json","fetch_events":"https://pith.science/api/pith-number/3D3LIFQ6XZ44L73HTQNEJL5F5E/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/3D3LIFQ6XZ44L73HTQNEJL5F5E/action/timestamp_anchor","attest_storage":"https://pith.science/pith/3D3LIFQ6XZ44L73HTQNEJL5F5E/action/storage_attestation","attest_author":"https://pith.science/pith/3D3LIFQ6XZ44L73HTQNEJL5F5E/action/author_attestation","sign_citation":"https://pith.science/pith/3D3LIFQ6XZ44L73HTQNEJL5F5E/action/citation_signature","submit_replication":"https://pith.science/pith/3D3LIFQ6XZ44L73HTQNEJL5F5E/action/replication_record"}},"created_at":"2026-05-18T01:44:18.616446+00:00","updated_at":"2026-05-18T01:44:18.616446+00:00"}