{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:B6WQ2CREYXBZIHTD6Q475V55OR","short_pith_number":"pith:B6WQ2CRE","canonical_record":{"source":{"id":"1104.4274","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2011-04-21T14:42:15Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"1849062cdc51f8a0e02e79a4a6744c75044643e53e3b7b8c70610ec5a727a22b","abstract_canon_sha256":"cc2900129eb13e06e57b6dadada8b522c702832e0727eefd1dbffae6ac04f5e7"},"schema_version":"1.0"},"canonical_sha256":"0fad0d0a24c5c3941e63f439fed7bd745679c2b03b47b511de1cf703f4f4746f","source":{"kind":"arxiv","id":"1104.4274","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1104.4274","created_at":"2026-05-18T04:19:55Z"},{"alias_kind":"arxiv_version","alias_value":"1104.4274v1","created_at":"2026-05-18T04:19:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1104.4274","created_at":"2026-05-18T04:19:55Z"},{"alias_kind":"pith_short_12","alias_value":"B6WQ2CREYXBZ","created_at":"2026-05-18T12:26:24Z"},{"alias_kind":"pith_short_16","alias_value":"B6WQ2CREYXBZIHTD","created_at":"2026-05-18T12:26:24Z"},{"alias_kind":"pith_short_8","alias_value":"B6WQ2CRE","created_at":"2026-05-18T12:26:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:B6WQ2CREYXBZIHTD6Q475V55OR","target":"record","payload":{"canonical_record":{"source":{"id":"1104.4274","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2011-04-21T14:42:15Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"1849062cdc51f8a0e02e79a4a6744c75044643e53e3b7b8c70610ec5a727a22b","abstract_canon_sha256":"cc2900129eb13e06e57b6dadada8b522c702832e0727eefd1dbffae6ac04f5e7"},"schema_version":"1.0"},"canonical_sha256":"0fad0d0a24c5c3941e63f439fed7bd745679c2b03b47b511de1cf703f4f4746f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:19:55.671649Z","signature_b64":"BY9CcMapZhSKXyzsB7dmCa0fwXvkRLRSSKNq+1UPNOA2MMSG0iX2LdrF2ebUmPZ9FjeJD8eVo82eUjsize0dDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0fad0d0a24c5c3941e63f439fed7bd745679c2b03b47b511de1cf703f4f4746f","last_reissued_at":"2026-05-18T04:19:55.670870Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:19:55.670870Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1104.4274","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:19:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"THeToQvbcZGBj9gjEiTlAujx3krBi+r5oW55sPV7YxpUdSlChdZgLOMtwowF/p0kuiRwMuPstpwIvKrKWltIAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T16:39:41.525035Z"},"content_sha256":"81fb9c87f3a260a109e4c5c74f6f7ffe53cb8c54117ce9be6a8764125c328361","schema_version":"1.0","event_id":"sha256:81fb9c87f3a260a109e4c5c74f6f7ffe53cb8c54117ce9be6a8764125c328361"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:B6WQ2CREYXBZIHTD6Q475V55OR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Parabolic versus elliptic focusing - Optimization of the focusing design of a cold triple-axis neutron spectrometer by Monte-Carlo simulations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"physics.ins-det","authors_text":"A. C. Komarek, M. Braden, P. B\\\"oni","submitted_at":"2011-04-21T14:42:15Z","abstract_excerpt":"We present Monte-Carlo simulations for the focusing design of a novel cold-neutron triple-axis spectrometer to be installed at the end position of the cold guide NL-1 of the research reactor FRM-II in Munich, Germany. Our simulations are of general relevance for the design of triple-axis spectrometers at end positions of neutron guides. Using the McStas program code we performed ray trajectories to compare parabolic and elliptic focusing concepts. In addition the design of the monochromator was optimized concerning crystal size and mosaic spread. The parabolic focusing concept is superior to t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1104.4274","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:19:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"p/doO2s+p49q89odAAmirPXZFq55zel3IBDGGOP5smC2Tcd4t9zJxpIvjrwBnhfVvV31+yF2re2Ierrwzwg4DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T16:39:41.525719Z"},"content_sha256":"179cdec428a3c5f0375a3b6f61f28f838d6bc5b2f962eac1d0032e408f41bfe3","schema_version":"1.0","event_id":"sha256:179cdec428a3c5f0375a3b6f61f28f838d6bc5b2f962eac1d0032e408f41bfe3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/B6WQ2CREYXBZIHTD6Q475V55OR/bundle.json","state_url":"https://pith.science/pith/B6WQ2CREYXBZIHTD6Q475V55OR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/B6WQ2CREYXBZIHTD6Q475V55OR/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":"2026-05-28T16:39:41Z","links":{"resolver":"https://pith.science/pith/B6WQ2CREYXBZIHTD6Q475V55OR","bundle":"https://pith.science/pith/B6WQ2CREYXBZIHTD6Q475V55OR/bundle.json","state":"https://pith.science/pith/B6WQ2CREYXBZIHTD6Q475V55OR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/B6WQ2CREYXBZIHTD6Q475V55OR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:B6WQ2CREYXBZIHTD6Q475V55OR","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":"cc2900129eb13e06e57b6dadada8b522c702832e0727eefd1dbffae6ac04f5e7","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2011-04-21T14:42:15Z","title_canon_sha256":"1849062cdc51f8a0e02e79a4a6744c75044643e53e3b7b8c70610ec5a727a22b"},"schema_version":"1.0","source":{"id":"1104.4274","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1104.4274","created_at":"2026-05-18T04:19:55Z"},{"alias_kind":"arxiv_version","alias_value":"1104.4274v1","created_at":"2026-05-18T04:19:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1104.4274","created_at":"2026-05-18T04:19:55Z"},{"alias_kind":"pith_short_12","alias_value":"B6WQ2CREYXBZ","created_at":"2026-05-18T12:26:24Z"},{"alias_kind":"pith_short_16","alias_value":"B6WQ2CREYXBZIHTD","created_at":"2026-05-18T12:26:24Z"},{"alias_kind":"pith_short_8","alias_value":"B6WQ2CRE","created_at":"2026-05-18T12:26:24Z"}],"graph_snapshots":[{"event_id":"sha256:179cdec428a3c5f0375a3b6f61f28f838d6bc5b2f962eac1d0032e408f41bfe3","target":"graph","created_at":"2026-05-18T04:19:55Z","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 present Monte-Carlo simulations for the focusing design of a novel cold-neutron triple-axis spectrometer to be installed at the end position of the cold guide NL-1 of the research reactor FRM-II in Munich, Germany. Our simulations are of general relevance for the design of triple-axis spectrometers at end positions of neutron guides. Using the McStas program code we performed ray trajectories to compare parabolic and elliptic focusing concepts. In addition the design of the monochromator was optimized concerning crystal size and mosaic spread. The parabolic focusing concept is superior to t","authors_text":"A. C. Komarek, M. Braden, P. B\\\"oni","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2011-04-21T14:42:15Z","title":"Parabolic versus elliptic focusing - Optimization of the focusing design of a cold triple-axis neutron spectrometer by Monte-Carlo simulations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1104.4274","kind":"arxiv","version":1},"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":"sha256:81fb9c87f3a260a109e4c5c74f6f7ffe53cb8c54117ce9be6a8764125c328361","target":"record","created_at":"2026-05-18T04:19:55Z","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":"cc2900129eb13e06e57b6dadada8b522c702832e0727eefd1dbffae6ac04f5e7","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2011-04-21T14:42:15Z","title_canon_sha256":"1849062cdc51f8a0e02e79a4a6744c75044643e53e3b7b8c70610ec5a727a22b"},"schema_version":"1.0","source":{"id":"1104.4274","kind":"arxiv","version":1}},"canonical_sha256":"0fad0d0a24c5c3941e63f439fed7bd745679c2b03b47b511de1cf703f4f4746f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0fad0d0a24c5c3941e63f439fed7bd745679c2b03b47b511de1cf703f4f4746f","first_computed_at":"2026-05-18T04:19:55.670870Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:19:55.670870Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"BY9CcMapZhSKXyzsB7dmCa0fwXvkRLRSSKNq+1UPNOA2MMSG0iX2LdrF2ebUmPZ9FjeJD8eVo82eUjsize0dDw==","signature_status":"signed_v1","signed_at":"2026-05-18T04:19:55.671649Z","signed_message":"canonical_sha256_bytes"},"source_id":"1104.4274","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:81fb9c87f3a260a109e4c5c74f6f7ffe53cb8c54117ce9be6a8764125c328361","sha256:179cdec428a3c5f0375a3b6f61f28f838d6bc5b2f962eac1d0032e408f41bfe3"],"state_sha256":"ddf21fc847d7a19e2c6f753f21799ea05166413aee066d01d74498aada02e6c7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9RDnByq+TKB60UDhxtujrsDiJoxh0KDLrCU9bqQ3FY3H7/dctc7y3qJkKmBNzZsxgmHvFiYYfLozcJ2fRRKtDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T16:39:41.528928Z","bundle_sha256":"13f62c7bc2d6f9109759502be34ec0dea76ea02fa2576bf7bab84fe7dff41d68"}}