{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2009:24MWPM5FXLB4PCOPXFW7KYOZ2Q","short_pith_number":"pith:24MWPM5F","schema_version":"1.0","canonical_sha256":"d71967b3a5bac3c789cfb96df561d9d4370cb6b1d58d26531a8eb4129df92574","source":{"kind":"arxiv","id":"0912.3164","version":1},"attestation_state":"computed","paper":{"title":"Building blocks for future detectors: Silicon test masses and 1550 nm laser light","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc","quant-ph"],"primary_cat":"physics.ins-det","authors_text":"B. Willke, D. Friedrich, F. Br\\\"uckner, H. L\\\"uck, J. D\\\"uck, K. Danzmann, M. Britzger, M. Mehmet, O. Burmeister, R. Nawrodt, R. Schnabel, S. Steinlechner, T. Eberle","submitted_at":"2009-12-16T15:33:34Z","abstract_excerpt":"Current interferometric gravitational wave detectors use the combination of quasi-monochromatic, continuous-wave laser light at 1064 nm and fused silica test masses at room temperature. Detectors of the third generation, such as the Einstein-Telescope, will involve a considerable sensitivity increase. The combination of 1550 nm laser radiation and crystalline silicon test masses at low temperatures might be important ingredients in order to achieve the sensitivity goal. Here we compare some properties of the fused silica and silicon test mass materials relevant for decreasing the thermal noise"},"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":"0912.3164","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2009-12-16T15:33:34Z","cross_cats_sorted":["gr-qc","quant-ph"],"title_canon_sha256":"07075a55598ea529319a0b5bc6cbc696abbcee90cb5b0ad55b32a24973409bf3","abstract_canon_sha256":"c208a7092d1aafb4f9f642ff27cf47e6e659f79a01a134fb14c4ea365cc9dc5c"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:33:56.307231Z","signature_b64":"racL3Alz/NZ7yOdLDiiYmavnbxuF+tNLiyQ8FEZ4mFYvFyJYFR2WsSLhLUnariFn4wuJyiL8WkWHosDNcCWWAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d71967b3a5bac3c789cfb96df561d9d4370cb6b1d58d26531a8eb4129df92574","last_reissued_at":"2026-05-18T02:33:56.306763Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:33:56.306763Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Building blocks for future detectors: Silicon test masses and 1550 nm laser light","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc","quant-ph"],"primary_cat":"physics.ins-det","authors_text":"B. Willke, D. Friedrich, F. Br\\\"uckner, H. L\\\"uck, J. D\\\"uck, K. Danzmann, M. Britzger, M. Mehmet, O. Burmeister, R. Nawrodt, R. Schnabel, S. Steinlechner, T. Eberle","submitted_at":"2009-12-16T15:33:34Z","abstract_excerpt":"Current interferometric gravitational wave detectors use the combination of quasi-monochromatic, continuous-wave laser light at 1064 nm and fused silica test masses at room temperature. Detectors of the third generation, such as the Einstein-Telescope, will involve a considerable sensitivity increase. The combination of 1550 nm laser radiation and crystalline silicon test masses at low temperatures might be important ingredients in order to achieve the sensitivity goal. Here we compare some properties of the fused silica and silicon test mass materials relevant for decreasing the thermal noise"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0912.3164","kind":"arxiv","version":1},"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":"0912.3164","created_at":"2026-05-18T02:33:56.306824+00:00"},{"alias_kind":"arxiv_version","alias_value":"0912.3164v1","created_at":"2026-05-18T02:33:56.306824+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0912.3164","created_at":"2026-05-18T02:33:56.306824+00:00"},{"alias_kind":"pith_short_12","alias_value":"24MWPM5FXLB4","created_at":"2026-05-18T12:25:58.018023+00:00"},{"alias_kind":"pith_short_16","alias_value":"24MWPM5FXLB4PCOP","created_at":"2026-05-18T12:25:58.018023+00:00"},{"alias_kind":"pith_short_8","alias_value":"24MWPM5F","created_at":"2026-05-18T12:25:58.018023+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/24MWPM5FXLB4PCOPXFW7KYOZ2Q","json":"https://pith.science/pith/24MWPM5FXLB4PCOPXFW7KYOZ2Q.json","graph_json":"https://pith.science/api/pith-number/24MWPM5FXLB4PCOPXFW7KYOZ2Q/graph.json","events_json":"https://pith.science/api/pith-number/24MWPM5FXLB4PCOPXFW7KYOZ2Q/events.json","paper":"https://pith.science/paper/24MWPM5F"},"agent_actions":{"view_html":"https://pith.science/pith/24MWPM5FXLB4PCOPXFW7KYOZ2Q","download_json":"https://pith.science/pith/24MWPM5FXLB4PCOPXFW7KYOZ2Q.json","view_paper":"https://pith.science/paper/24MWPM5F","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0912.3164&json=true","fetch_graph":"https://pith.science/api/pith-number/24MWPM5FXLB4PCOPXFW7KYOZ2Q/graph.json","fetch_events":"https://pith.science/api/pith-number/24MWPM5FXLB4PCOPXFW7KYOZ2Q/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/24MWPM5FXLB4PCOPXFW7KYOZ2Q/action/timestamp_anchor","attest_storage":"https://pith.science/pith/24MWPM5FXLB4PCOPXFW7KYOZ2Q/action/storage_attestation","attest_author":"https://pith.science/pith/24MWPM5FXLB4PCOPXFW7KYOZ2Q/action/author_attestation","sign_citation":"https://pith.science/pith/24MWPM5FXLB4PCOPXFW7KYOZ2Q/action/citation_signature","submit_replication":"https://pith.science/pith/24MWPM5FXLB4PCOPXFW7KYOZ2Q/action/replication_record"}},"created_at":"2026-05-18T02:33:56.306824+00:00","updated_at":"2026-05-18T02:33:56.306824+00:00"}