{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:LFGU64DLLDEWJOP4JG4HSV4LAU","short_pith_number":"pith:LFGU64DL","canonical_record":{"source":{"id":"1711.04841","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-11-13T20:41:12Z","cross_cats_sorted":[],"title_canon_sha256":"cbfc9973b3fc3fa37145e023279e1ec625c713264daf963801ed4cd881c88968","abstract_canon_sha256":"b4e824689b2d7ff6b3f403d0afa96fbfae08634b6812a8912e356788454f6c95"},"schema_version":"1.0"},"canonical_sha256":"594d4f706b58c964b9fc49b879578b05254d8df9054d36660ef8341a0eff22fe","source":{"kind":"arxiv","id":"1711.04841","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1711.04841","created_at":"2026-05-18T00:12:32Z"},{"alias_kind":"arxiv_version","alias_value":"1711.04841v2","created_at":"2026-05-18T00:12:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.04841","created_at":"2026-05-18T00:12:32Z"},{"alias_kind":"pith_short_12","alias_value":"LFGU64DLLDEW","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_16","alias_value":"LFGU64DLLDEWJOP4","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_8","alias_value":"LFGU64DL","created_at":"2026-05-18T12:31:28Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:LFGU64DLLDEWJOP4JG4HSV4LAU","target":"record","payload":{"canonical_record":{"source":{"id":"1711.04841","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-11-13T20:41:12Z","cross_cats_sorted":[],"title_canon_sha256":"cbfc9973b3fc3fa37145e023279e1ec625c713264daf963801ed4cd881c88968","abstract_canon_sha256":"b4e824689b2d7ff6b3f403d0afa96fbfae08634b6812a8912e356788454f6c95"},"schema_version":"1.0"},"canonical_sha256":"594d4f706b58c964b9fc49b879578b05254d8df9054d36660ef8341a0eff22fe","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:12:32.715698Z","signature_b64":"+QEVd0rNadd6cMs4++HjyHmKPuGR2+7lcMt52D5HhY5qkUptNRt8drWu2UY60De0gAqZL+ZhqSKGBz7BLK4tAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"594d4f706b58c964b9fc49b879578b05254d8df9054d36660ef8341a0eff22fe","last_reissued_at":"2026-05-18T00:12:32.714983Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:12:32.714983Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1711.04841","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:12:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9khwnomyb/48Z8EPe49iuaI3IjhrmYFYQfime149ayeC+5tOyndXpa6mrFabEARHVD2AV9c+hFquX7XY5uIvAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T09:26:29.835060Z"},"content_sha256":"a3b73aea79cb42d74a13582c3f25d74c653f82cc5487b7d9f911162d15f36405","schema_version":"1.0","event_id":"sha256:a3b73aea79cb42d74a13582c3f25d74c653f82cc5487b7d9f911162d15f36405"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:LFGU64DLLDEWJOP4JG4HSV4LAU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Characterization of the Mid-Frequency Arrays for Advanced ACTPol","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Brian J. Koopman, Edward J. Wollack, Federico Nati, James A. Beall, Jason Austermann, Jason Stevens, Joel Ullom, Johannes Hubmayr, Kevin T. Crowley, Lyman A. Page, Maria Salatino, Michael D. Niemack, Patricio A. Gallardo, Rahul Datta, Sara M. Simon, Shannon M. Duff, Shuay-Pwu P. Ho, Steve K. Choi, Suzanne T. Staggs, Yaqiong Li","submitted_at":"2017-11-13T20:41:12Z","abstract_excerpt":"The Advanced ACTPol upgrade on the Atacama Cosmology Telescope aims to improve the measurement of the cosmic microwave background anisotropies and polarization, using four new dichroic detector arrays fabricated on 150-mm silicon wafers. These bolometric cameras use AlMn transition-edge sensors, coupled to feedhorns with orthomode transducers for polarization sensitivity. The first deployed camera is sensitive to both 150 GHz and 230 GHz. Here we present the lab characterization of the thermal parameters and optical efficiencies for the two newest fielded arrays, each sensitive to both 90 GHz "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.04841","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:12:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5QVssP6FYKOGhruv68OSjCSdcYOLH9S/dMbvIZtQuxHJncEUmMGtdff6UpO8p6Ypi01x3uQH7NENQCwwCJpZAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T09:26:29.835452Z"},"content_sha256":"4dc5a8eccfef247e8a42f64ae065bd07d3cb501ee7f60b435067ad0fa298d979","schema_version":"1.0","event_id":"sha256:4dc5a8eccfef247e8a42f64ae065bd07d3cb501ee7f60b435067ad0fa298d979"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LFGU64DLLDEWJOP4JG4HSV4LAU/bundle.json","state_url":"https://pith.science/pith/LFGU64DLLDEWJOP4JG4HSV4LAU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LFGU64DLLDEWJOP4JG4HSV4LAU/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-01T09:26:29Z","links":{"resolver":"https://pith.science/pith/LFGU64DLLDEWJOP4JG4HSV4LAU","bundle":"https://pith.science/pith/LFGU64DLLDEWJOP4JG4HSV4LAU/bundle.json","state":"https://pith.science/pith/LFGU64DLLDEWJOP4JG4HSV4LAU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LFGU64DLLDEWJOP4JG4HSV4LAU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:LFGU64DLLDEWJOP4JG4HSV4LAU","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":"b4e824689b2d7ff6b3f403d0afa96fbfae08634b6812a8912e356788454f6c95","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-11-13T20:41:12Z","title_canon_sha256":"cbfc9973b3fc3fa37145e023279e1ec625c713264daf963801ed4cd881c88968"},"schema_version":"1.0","source":{"id":"1711.04841","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1711.04841","created_at":"2026-05-18T00:12:32Z"},{"alias_kind":"arxiv_version","alias_value":"1711.04841v2","created_at":"2026-05-18T00:12:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.04841","created_at":"2026-05-18T00:12:32Z"},{"alias_kind":"pith_short_12","alias_value":"LFGU64DLLDEW","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_16","alias_value":"LFGU64DLLDEWJOP4","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_8","alias_value":"LFGU64DL","created_at":"2026-05-18T12:31:28Z"}],"graph_snapshots":[{"event_id":"sha256:4dc5a8eccfef247e8a42f64ae065bd07d3cb501ee7f60b435067ad0fa298d979","target":"graph","created_at":"2026-05-18T00:12:32Z","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":"The Advanced ACTPol upgrade on the Atacama Cosmology Telescope aims to improve the measurement of the cosmic microwave background anisotropies and polarization, using four new dichroic detector arrays fabricated on 150-mm silicon wafers. These bolometric cameras use AlMn transition-edge sensors, coupled to feedhorns with orthomode transducers for polarization sensitivity. The first deployed camera is sensitive to both 150 GHz and 230 GHz. Here we present the lab characterization of the thermal parameters and optical efficiencies for the two newest fielded arrays, each sensitive to both 90 GHz ","authors_text":"Brian J. Koopman, Edward J. Wollack, Federico Nati, James A. Beall, Jason Austermann, Jason Stevens, Joel Ullom, Johannes Hubmayr, Kevin T. Crowley, Lyman A. Page, Maria Salatino, Michael D. Niemack, Patricio A. Gallardo, Rahul Datta, Sara M. Simon, Shannon M. Duff, Shuay-Pwu P. Ho, Steve K. Choi, Suzanne T. Staggs, Yaqiong Li","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-11-13T20:41:12Z","title":"Characterization of the Mid-Frequency Arrays for Advanced ACTPol"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.04841","kind":"arxiv","version":2},"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:a3b73aea79cb42d74a13582c3f25d74c653f82cc5487b7d9f911162d15f36405","target":"record","created_at":"2026-05-18T00:12:32Z","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":"b4e824689b2d7ff6b3f403d0afa96fbfae08634b6812a8912e356788454f6c95","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-11-13T20:41:12Z","title_canon_sha256":"cbfc9973b3fc3fa37145e023279e1ec625c713264daf963801ed4cd881c88968"},"schema_version":"1.0","source":{"id":"1711.04841","kind":"arxiv","version":2}},"canonical_sha256":"594d4f706b58c964b9fc49b879578b05254d8df9054d36660ef8341a0eff22fe","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"594d4f706b58c964b9fc49b879578b05254d8df9054d36660ef8341a0eff22fe","first_computed_at":"2026-05-18T00:12:32.714983Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:12:32.714983Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+QEVd0rNadd6cMs4++HjyHmKPuGR2+7lcMt52D5HhY5qkUptNRt8drWu2UY60De0gAqZL+ZhqSKGBz7BLK4tAA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:12:32.715698Z","signed_message":"canonical_sha256_bytes"},"source_id":"1711.04841","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a3b73aea79cb42d74a13582c3f25d74c653f82cc5487b7d9f911162d15f36405","sha256:4dc5a8eccfef247e8a42f64ae065bd07d3cb501ee7f60b435067ad0fa298d979"],"state_sha256":"456afacd437851a36b83f74655ba45698585e6a3ceac6bd640bf0afcfa71af09"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0YkaPTIMkCjK3ZA+HqpVpZP1H6g0uGUWb60jU1hfzdlMB5B2YIZ8ZSnLL+uQszbQNMdogjNzRmF3LN308GTODg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T09:26:29.837438Z","bundle_sha256":"d1cfe591e9ba0ec2466a125511b68fee0ae0fb9c517021f310fd9532bcf03468"}}