{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:MSJR6JYAQM3EW4OD2XBTMJMZDR","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":"79812e5e5a44500b72b1dbc66b0c091062c81f3f11ef7baf286387efcabe9004","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-11-21T13:03:06Z","title_canon_sha256":"4dedce690023cd55e3f210ab81e65a0ff828982c009beac2c486b83244faacf0"},"schema_version":"1.0","source":{"id":"1311.5388","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1311.5388","created_at":"2026-05-18T01:46:11Z"},{"alias_kind":"arxiv_version","alias_value":"1311.5388v4","created_at":"2026-05-18T01:46:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1311.5388","created_at":"2026-05-18T01:46:11Z"},{"alias_kind":"pith_short_12","alias_value":"MSJR6JYAQM3E","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_16","alias_value":"MSJR6JYAQM3EW4OD","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_8","alias_value":"MSJR6JYA","created_at":"2026-05-18T12:27:52Z"}],"graph_snapshots":[{"event_id":"sha256:afc9bbd63c2a801e5967b325e2289411c8233922eb8acd9bd061f17b6a89d9de","target":"graph","created_at":"2026-05-18T01:46:11Z","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":"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","authors_text":"Adrian T. Lee, Aritoki Suzuki, Hiroshi Yamaguchi, Masashi Hazumi, Takahiro Okamura, Takayuki Tomaru, Tomotake Matsumura, Yuki Inoue","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-11-21T13:03:06Z","title":"Cryogenic infrared filter made of alumina for use at millimeter wavelength"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1311.5388","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":"sha256:62c944f8a96c2493021d04e1248085fa68b1abab9df0ca12ff58598d166cc82c","target":"record","created_at":"2026-05-18T01:46:11Z","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":"79812e5e5a44500b72b1dbc66b0c091062c81f3f11ef7baf286387efcabe9004","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-11-21T13:03:06Z","title_canon_sha256":"4dedce690023cd55e3f210ab81e65a0ff828982c009beac2c486b83244faacf0"},"schema_version":"1.0","source":{"id":"1311.5388","kind":"arxiv","version":4}},"canonical_sha256":"64931f270083364b71c3d5c33625991c7a9fdd3ebf8a86e7c3d62ab5b249562c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"64931f270083364b71c3d5c33625991c7a9fdd3ebf8a86e7c3d62ab5b249562c","first_computed_at":"2026-05-18T01:46:11.662363Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:46:11.662363Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"goGTpj3G2VadRLRaY6/nnPg2TSitg3m14KErQ1lIAX02MOZRx67lDezhI9Cdi+XEF3oRfdG+LUnpW3F1zCrpDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:46:11.663023Z","signed_message":"canonical_sha256_bytes"},"source_id":"1311.5388","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:62c944f8a96c2493021d04e1248085fa68b1abab9df0ca12ff58598d166cc82c","sha256:afc9bbd63c2a801e5967b325e2289411c8233922eb8acd9bd061f17b6a89d9de"],"state_sha256":"eaadf4f49172ea638d84db6b8f41cc8dec0a1e6241ec3bd69deb5449107525eb"}