{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2013:MSJR6JYAQM3EW4OD2XBTMJMZDR","short_pith_number":"pith:MSJR6JYA","schema_version":"1.0","canonical_sha256":"64931f270083364b71c3d5c33625991c7a9fdd3ebf8a86e7c3d62ab5b249562c","source":{"kind":"arxiv","id":"1311.5388","version":4},"attestation_state":"computed","paper":{"title":"Cryogenic infrared filter made of alumina for use at millimeter wavelength","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.IM","authors_text":"Adrian T. Lee, Aritoki Suzuki, Hiroshi Yamaguchi, Masashi Hazumi, Takahiro Okamura, Takayuki Tomaru, Tomotake Matsumura, Yuki Inoue","submitted_at":"2013-11-21T13:03:06Z","abstract_excerpt":"We propose a high thermal conductivity infrared (IR) filter using alumina for use in millimeter wave detection systems. We constructed a prototype two-layer anti-reflection (AR) coated alumina filter with a diameter of 100mm and a thickness of 2mm, and characterized its thermal and optical properties. The transmittance of this filter at 95GHz and 150GHz is 97% and 95% while the estimated 3dB cutoff frequency is at 450GHz. The high thermal conductivity of alumina minimizes thermal gradients. We measure a differential temperature of only 0.21K between the center and the edge of the filter when i"},"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":"1311.5388","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-11-21T13:03:06Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"4dedce690023cd55e3f210ab81e65a0ff828982c009beac2c486b83244faacf0","abstract_canon_sha256":"79812e5e5a44500b72b1dbc66b0c091062c81f3f11ef7baf286387efcabe9004"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:46:11.663023Z","signature_b64":"goGTpj3G2VadRLRaY6/nnPg2TSitg3m14KErQ1lIAX02MOZRx67lDezhI9Cdi+XEF3oRfdG+LUnpW3F1zCrpDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"64931f270083364b71c3d5c33625991c7a9fdd3ebf8a86e7c3d62ab5b249562c","last_reissued_at":"2026-05-18T01:46:11.662363Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:46:11.662363Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Cryogenic infrared filter made of alumina for use at millimeter wavelength","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.IM","authors_text":"Adrian T. Lee, Aritoki Suzuki, Hiroshi Yamaguchi, Masashi Hazumi, Takahiro Okamura, Takayuki Tomaru, Tomotake Matsumura, Yuki Inoue","submitted_at":"2013-11-21T13:03:06Z","abstract_excerpt":"We propose a high thermal conductivity infrared (IR) filter using alumina for use in millimeter wave detection systems. We constructed a prototype two-layer anti-reflection (AR) coated alumina filter with a diameter of 100mm and a thickness of 2mm, and characterized its thermal and optical properties. The transmittance of this filter at 95GHz and 150GHz is 97% and 95% while the estimated 3dB cutoff frequency is at 450GHz. The high thermal conductivity of alumina minimizes thermal gradients. We measure a differential temperature of only 0.21K between the center and the edge of the filter when i"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1311.5388","kind":"arxiv","version":4},"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":"1311.5388","created_at":"2026-05-18T01:46:11.662444+00:00"},{"alias_kind":"arxiv_version","alias_value":"1311.5388v4","created_at":"2026-05-18T01:46:11.662444+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1311.5388","created_at":"2026-05-18T01:46:11.662444+00:00"},{"alias_kind":"pith_short_12","alias_value":"MSJR6JYAQM3E","created_at":"2026-05-18T12:27:52.871228+00:00"},{"alias_kind":"pith_short_16","alias_value":"MSJR6JYAQM3EW4OD","created_at":"2026-05-18T12:27:52.871228+00:00"},{"alias_kind":"pith_short_8","alias_value":"MSJR6JYA","created_at":"2026-05-18T12:27:52.871228+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/MSJR6JYAQM3EW4OD2XBTMJMZDR","json":"https://pith.science/pith/MSJR6JYAQM3EW4OD2XBTMJMZDR.json","graph_json":"https://pith.science/api/pith-number/MSJR6JYAQM3EW4OD2XBTMJMZDR/graph.json","events_json":"https://pith.science/api/pith-number/MSJR6JYAQM3EW4OD2XBTMJMZDR/events.json","paper":"https://pith.science/paper/MSJR6JYA"},"agent_actions":{"view_html":"https://pith.science/pith/MSJR6JYAQM3EW4OD2XBTMJMZDR","download_json":"https://pith.science/pith/MSJR6JYAQM3EW4OD2XBTMJMZDR.json","view_paper":"https://pith.science/paper/MSJR6JYA","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1311.5388&json=true","fetch_graph":"https://pith.science/api/pith-number/MSJR6JYAQM3EW4OD2XBTMJMZDR/graph.json","fetch_events":"https://pith.science/api/pith-number/MSJR6JYAQM3EW4OD2XBTMJMZDR/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/MSJR6JYAQM3EW4OD2XBTMJMZDR/action/timestamp_anchor","attest_storage":"https://pith.science/pith/MSJR6JYAQM3EW4OD2XBTMJMZDR/action/storage_attestation","attest_author":"https://pith.science/pith/MSJR6JYAQM3EW4OD2XBTMJMZDR/action/author_attestation","sign_citation":"https://pith.science/pith/MSJR6JYAQM3EW4OD2XBTMJMZDR/action/citation_signature","submit_replication":"https://pith.science/pith/MSJR6JYAQM3EW4OD2XBTMJMZDR/action/replication_record"}},"created_at":"2026-05-18T01:46:11.662444+00:00","updated_at":"2026-05-18T01:46:11.662444+00:00"}