{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2020:YAFOPETKDAEJDVXL3MQTAANKWL","short_pith_number":"pith:YAFOPETK","schema_version":"1.0","canonical_sha256":"c00ae7926a180891d6ebdb213001aab2f30eb14fdfdab937696cb48742d8e08a","source":{"kind":"arxiv","id":"2010.02233","version":3},"attestation_state":"computed","paper":{"title":"The Simons Observatory: Metamaterial Microwave Absorber (MMA) and its Cryogenic Applications","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Aamir M. Ali, Akito Kusaka, Andrew Bazarko, Anna Kofman, Aritoki Suzuki, Edward J. Wollack, Federico Nati, Frederick Matsuda, Gabriele Coppi, Grace E. Chesmore, Grant P. Teply, Jeff McMahon, Jon E. Gudmundsson, Joseph E. Golec, Kathleen Harrington, Kenji Kiuchi, Makoto Hattori, Mario Zannoni, Mark Devlin, Michael D. Niemack, Michele Limon, Ningfeng Zhu, Patricio A. Gallardo, Robert J. Thornton, Shreya Sutariya, Shunsuke Adachi, Simon R. Dicker, Tom Devlin, Zhilei Xu","submitted_at":"2020-10-05T18:00:05Z","abstract_excerpt":"Controlling stray light at millimeter wavelengths requires special optical design and selection of absorptive materials that should be compatible with cryogenic operating environments. While a wide selection of absorptive materials exists, these typically exhibit high indices of refraction and reflect/scatter a significant fraction of light before absorption. For many lower index materials such as commercial microwave absorbers, their applications in cryogenic environments are challenging. In this paper, we present a new tool to control stray light: metamaterial microwave absorber tiles. These"},"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":"2010.02233","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2020-10-05T18:00:05Z","cross_cats_sorted":[],"title_canon_sha256":"00546d75ac0a1dcc623a5c8c9e5d72034b3b51a4e7852de1cfd7a441fdb69fa3","abstract_canon_sha256":"49a0145b48aab1a4372921b69e18e02dd3d84fafa3a348fa81fe39042d5f6cca"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:17:09.226250Z","signature_b64":"1/gJsnGWkLgnI843YYO1FkA+mapeGIe8jgAik/Ck8rO6NzF7OPcH+V5zZrzK3se4glK28oQG9kKa+JwXxjVpCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c00ae7926a180891d6ebdb213001aab2f30eb14fdfdab937696cb48742d8e08a","last_reissued_at":"2026-07-05T02:17:09.225819Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:17:09.225819Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The Simons Observatory: Metamaterial Microwave Absorber (MMA) and its Cryogenic Applications","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Aamir M. Ali, Akito Kusaka, Andrew Bazarko, Anna Kofman, Aritoki Suzuki, Edward J. Wollack, Federico Nati, Frederick Matsuda, Gabriele Coppi, Grace E. Chesmore, Grant P. Teply, Jeff McMahon, Jon E. Gudmundsson, Joseph E. Golec, Kathleen Harrington, Kenji Kiuchi, Makoto Hattori, Mario Zannoni, Mark Devlin, Michael D. Niemack, Michele Limon, Ningfeng Zhu, Patricio A. Gallardo, Robert J. Thornton, Shreya Sutariya, Shunsuke Adachi, Simon R. Dicker, Tom Devlin, Zhilei Xu","submitted_at":"2020-10-05T18:00:05Z","abstract_excerpt":"Controlling stray light at millimeter wavelengths requires special optical design and selection of absorptive materials that should be compatible with cryogenic operating environments. While a wide selection of absorptive materials exists, these typically exhibit high indices of refraction and reflect/scatter a significant fraction of light before absorption. For many lower index materials such as commercial microwave absorbers, their applications in cryogenic environments are challenging. In this paper, we present a new tool to control stray light: metamaterial microwave absorber tiles. These"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2010.02233","kind":"arxiv","version":3},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2010.02233/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2010.02233","created_at":"2026-07-05T02:17:09.225879+00:00"},{"alias_kind":"arxiv_version","alias_value":"2010.02233v3","created_at":"2026-07-05T02:17:09.225879+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2010.02233","created_at":"2026-07-05T02:17:09.225879+00:00"},{"alias_kind":"pith_short_12","alias_value":"YAFOPETKDAEJ","created_at":"2026-07-05T02:17:09.225879+00:00"},{"alias_kind":"pith_short_16","alias_value":"YAFOPETKDAEJDVXL","created_at":"2026-07-05T02:17:09.225879+00:00"},{"alias_kind":"pith_short_8","alias_value":"YAFOPETK","created_at":"2026-07-05T02:17:09.225879+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/YAFOPETKDAEJDVXL3MQTAANKWL","json":"https://pith.science/pith/YAFOPETKDAEJDVXL3MQTAANKWL.json","graph_json":"https://pith.science/api/pith-number/YAFOPETKDAEJDVXL3MQTAANKWL/graph.json","events_json":"https://pith.science/api/pith-number/YAFOPETKDAEJDVXL3MQTAANKWL/events.json","paper":"https://pith.science/paper/YAFOPETK"},"agent_actions":{"view_html":"https://pith.science/pith/YAFOPETKDAEJDVXL3MQTAANKWL","download_json":"https://pith.science/pith/YAFOPETKDAEJDVXL3MQTAANKWL.json","view_paper":"https://pith.science/paper/YAFOPETK","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2010.02233&json=true","fetch_graph":"https://pith.science/api/pith-number/YAFOPETKDAEJDVXL3MQTAANKWL/graph.json","fetch_events":"https://pith.science/api/pith-number/YAFOPETKDAEJDVXL3MQTAANKWL/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/YAFOPETKDAEJDVXL3MQTAANKWL/action/timestamp_anchor","attest_storage":"https://pith.science/pith/YAFOPETKDAEJDVXL3MQTAANKWL/action/storage_attestation","attest_author":"https://pith.science/pith/YAFOPETKDAEJDVXL3MQTAANKWL/action/author_attestation","sign_citation":"https://pith.science/pith/YAFOPETKDAEJDVXL3MQTAANKWL/action/citation_signature","submit_replication":"https://pith.science/pith/YAFOPETKDAEJDVXL3MQTAANKWL/action/replication_record"}},"created_at":"2026-07-05T02:17:09.225879+00:00","updated_at":"2026-07-05T02:17:09.225879+00:00"}