{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:ZNRUG34W5F7N5F7BJU5XXLVHKA","short_pith_number":"pith:ZNRUG34W","canonical_record":{"source":{"id":"2210.00085","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2022-09-30T20:41:08Z","cross_cats_sorted":[],"title_canon_sha256":"24625e3643feb61fdbf5029a48b80c440fbc21cf86fc0fc6d4aaf37c0cf2fb25","abstract_canon_sha256":"0a2cade580cabf227c095633d68fecc6e828b40d82313348961e3441dc06762f"},"schema_version":"1.0"},"canonical_sha256":"cb63436f96e97ede97e14d3b7baea75005a567d6d18f4d8810e9a5bddd743360","source":{"kind":"arxiv","id":"2210.00085","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2210.00085","created_at":"2026-07-05T05:02:28Z"},{"alias_kind":"arxiv_version","alias_value":"2210.00085v1","created_at":"2026-07-05T05:02:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2210.00085","created_at":"2026-07-05T05:02:28Z"},{"alias_kind":"pith_short_12","alias_value":"ZNRUG34W5F7N","created_at":"2026-07-05T05:02:28Z"},{"alias_kind":"pith_short_16","alias_value":"ZNRUG34W5F7N5F7B","created_at":"2026-07-05T05:02:28Z"},{"alias_kind":"pith_short_8","alias_value":"ZNRUG34W","created_at":"2026-07-05T05:02:28Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:ZNRUG34W5F7N5F7BJU5XXLVHKA","target":"record","payload":{"canonical_record":{"source":{"id":"2210.00085","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2022-09-30T20:41:08Z","cross_cats_sorted":[],"title_canon_sha256":"24625e3643feb61fdbf5029a48b80c440fbc21cf86fc0fc6d4aaf37c0cf2fb25","abstract_canon_sha256":"0a2cade580cabf227c095633d68fecc6e828b40d82313348961e3441dc06762f"},"schema_version":"1.0"},"canonical_sha256":"cb63436f96e97ede97e14d3b7baea75005a567d6d18f4d8810e9a5bddd743360","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:02:28.381743Z","signature_b64":"mFlpIJHkI+EXKRTfLScsFJ52V60wU7G2IMN7Lr5ESsfkwFiJAyHtiI2KA1XUIAavpnEv/duQMUvBczb6WhhPCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cb63436f96e97ede97e14d3b7baea75005a567d6d18f4d8810e9a5bddd743360","last_reissued_at":"2026-07-05T05:02:28.381248Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:02:28.381248Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2210.00085","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":"2026-07-05T05:02:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"C1BEGTiZcyE5fAjj6Z1glLq7vbKsfiVrLLEHYuRJ8j958UdyDQZTTZelAUP24FDHGVBU9N5FYyb5buX/oIFxDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T07:40:09.483946Z"},"content_sha256":"4b811d3a58356d5cdf3836b8bbb3f995057b6f4802bae12372caf4dacc765529","schema_version":"1.0","event_id":"sha256:4b811d3a58356d5cdf3836b8bbb3f995057b6f4802bae12372caf4dacc765529"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:ZNRUG34W5F7N5F7BJU5XXLVHKA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Development of a Full Monte Carlo Therapeutic Dose Calculation Toolkit for Halcyon Using Geant4","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.med-ph","authors_text":"Abhishek Sethi, Bin Cai, Daren Sawkey, Ruirui Liu, Tianyu Zhao, Xiandong Zhao, Zhen Ji","submitted_at":"2022-09-30T20:41:08Z","abstract_excerpt":"Purpose: To develop a Monte Carlo (MC) therapeutic dose calculation toolkit of a recently released ring gantry linac in Geant4 (Version 10.7) for secondary dose validation of radiotherapy plan. Methods: For the Halcyon (Varian Medical Systems), the DSMLC was modeled and radiation transport in DSMLC and patient phantom was simulated using Geant4. Radiation source was sampled from a phase space file for linac head above the DSMLC. The phase space file was obtained using a cloud-based Monte Carlo (MC) simulator, VirtuaLinac (VL) provide by Varian. Dosimetric profiles for different square field wi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2210.00085","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2210.00085/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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T05:02:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"e+b9WSR18apvmcq4Qo5mbcjeUMzTH4d29awNq23DdsEyfSB+unYDgrEQpsNaiFam1UqCZfsqPVqSbTFm9pcFCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T07:40:09.484334Z"},"content_sha256":"cd7cfac54cad2932c0a8a04055f6895e05b1f8734d06923a3b35eab21c5c4ea7","schema_version":"1.0","event_id":"sha256:cd7cfac54cad2932c0a8a04055f6895e05b1f8734d06923a3b35eab21c5c4ea7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZNRUG34W5F7N5F7BJU5XXLVHKA/bundle.json","state_url":"https://pith.science/pith/ZNRUG34W5F7N5F7BJU5XXLVHKA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZNRUG34W5F7N5F7BJU5XXLVHKA/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":"2026-07-06T07:40:09Z","links":{"resolver":"https://pith.science/pith/ZNRUG34W5F7N5F7BJU5XXLVHKA","bundle":"https://pith.science/pith/ZNRUG34W5F7N5F7BJU5XXLVHKA/bundle.json","state":"https://pith.science/pith/ZNRUG34W5F7N5F7BJU5XXLVHKA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZNRUG34W5F7N5F7BJU5XXLVHKA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:ZNRUG34W5F7N5F7BJU5XXLVHKA","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":"0a2cade580cabf227c095633d68fecc6e828b40d82313348961e3441dc06762f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2022-09-30T20:41:08Z","title_canon_sha256":"24625e3643feb61fdbf5029a48b80c440fbc21cf86fc0fc6d4aaf37c0cf2fb25"},"schema_version":"1.0","source":{"id":"2210.00085","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2210.00085","created_at":"2026-07-05T05:02:28Z"},{"alias_kind":"arxiv_version","alias_value":"2210.00085v1","created_at":"2026-07-05T05:02:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2210.00085","created_at":"2026-07-05T05:02:28Z"},{"alias_kind":"pith_short_12","alias_value":"ZNRUG34W5F7N","created_at":"2026-07-05T05:02:28Z"},{"alias_kind":"pith_short_16","alias_value":"ZNRUG34W5F7N5F7B","created_at":"2026-07-05T05:02:28Z"},{"alias_kind":"pith_short_8","alias_value":"ZNRUG34W","created_at":"2026-07-05T05:02:28Z"}],"graph_snapshots":[{"event_id":"sha256:cd7cfac54cad2932c0a8a04055f6895e05b1f8734d06923a3b35eab21c5c4ea7","target":"graph","created_at":"2026-07-05T05:02:28Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2210.00085/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Purpose: To develop a Monte Carlo (MC) therapeutic dose calculation toolkit of a recently released ring gantry linac in Geant4 (Version 10.7) for secondary dose validation of radiotherapy plan. Methods: For the Halcyon (Varian Medical Systems), the DSMLC was modeled and radiation transport in DSMLC and patient phantom was simulated using Geant4. Radiation source was sampled from a phase space file for linac head above the DSMLC. The phase space file was obtained using a cloud-based Monte Carlo (MC) simulator, VirtuaLinac (VL) provide by Varian. Dosimetric profiles for different square field wi","authors_text":"Abhishek Sethi, Bin Cai, Daren Sawkey, Ruirui Liu, Tianyu Zhao, Xiandong Zhao, Zhen Ji","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2022-09-30T20:41:08Z","title":"Development of a Full Monte Carlo Therapeutic Dose Calculation Toolkit for Halcyon Using Geant4"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2210.00085","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":"sha256:4b811d3a58356d5cdf3836b8bbb3f995057b6f4802bae12372caf4dacc765529","target":"record","created_at":"2026-07-05T05:02:28Z","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":"0a2cade580cabf227c095633d68fecc6e828b40d82313348961e3441dc06762f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2022-09-30T20:41:08Z","title_canon_sha256":"24625e3643feb61fdbf5029a48b80c440fbc21cf86fc0fc6d4aaf37c0cf2fb25"},"schema_version":"1.0","source":{"id":"2210.00085","kind":"arxiv","version":1}},"canonical_sha256":"cb63436f96e97ede97e14d3b7baea75005a567d6d18f4d8810e9a5bddd743360","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cb63436f96e97ede97e14d3b7baea75005a567d6d18f4d8810e9a5bddd743360","first_computed_at":"2026-07-05T05:02:28.381248Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:02:28.381248Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"mFlpIJHkI+EXKRTfLScsFJ52V60wU7G2IMN7Lr5ESsfkwFiJAyHtiI2KA1XUIAavpnEv/duQMUvBczb6WhhPCg==","signature_status":"signed_v1","signed_at":"2026-07-05T05:02:28.381743Z","signed_message":"canonical_sha256_bytes"},"source_id":"2210.00085","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4b811d3a58356d5cdf3836b8bbb3f995057b6f4802bae12372caf4dacc765529","sha256:cd7cfac54cad2932c0a8a04055f6895e05b1f8734d06923a3b35eab21c5c4ea7"],"state_sha256":"7fc77dcc1814b71e1e05c288feae62098648f8dface46de996e87a12e6d04ac6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"95HBpjKBTK32DlnLFBfOxinKfqM3fc/el1Ds9Wp1Di4BOUQ/q5HOXJHDBnUHuZNTMzrhwzWIuClYxMvPnUtFAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-06T07:40:09.486328Z","bundle_sha256":"b31f286b5896b86f94e8fd4a4cb02cd09283ad86dcec5769df191ae60f43ca7d"}}