{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:2SURP6HQQRYWAW2VOTRSHHGWDV","short_pith_number":"pith:2SURP6HQ","canonical_record":{"source":{"id":"2407.18198","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2024-07-25T17:08:35Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"208343adfbd3201ca3b7d63b0eb0be025fa7f107bdd084c964c69ac1343db2fd","abstract_canon_sha256":"11524f595e051662cab49e1fecbe8ea8b9bbf25b43ff4eb2d4b91fa17641ae7d"},"schema_version":"1.0"},"canonical_sha256":"d4a917f8f08471605b5574e3239cd61d65d40d3a9c69fae648b91db3f53db0b9","source":{"kind":"arxiv","id":"2407.18198","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2407.18198","created_at":"2026-07-05T08:57:57Z"},{"alias_kind":"arxiv_version","alias_value":"2407.18198v2","created_at":"2026-07-05T08:57:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2407.18198","created_at":"2026-07-05T08:57:57Z"},{"alias_kind":"pith_short_12","alias_value":"2SURP6HQQRYW","created_at":"2026-07-05T08:57:57Z"},{"alias_kind":"pith_short_16","alias_value":"2SURP6HQQRYWAW2V","created_at":"2026-07-05T08:57:57Z"},{"alias_kind":"pith_short_8","alias_value":"2SURP6HQ","created_at":"2026-07-05T08:57:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:2SURP6HQQRYWAW2VOTRSHHGWDV","target":"record","payload":{"canonical_record":{"source":{"id":"2407.18198","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2024-07-25T17:08:35Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"208343adfbd3201ca3b7d63b0eb0be025fa7f107bdd084c964c69ac1343db2fd","abstract_canon_sha256":"11524f595e051662cab49e1fecbe8ea8b9bbf25b43ff4eb2d4b91fa17641ae7d"},"schema_version":"1.0"},"canonical_sha256":"d4a917f8f08471605b5574e3239cd61d65d40d3a9c69fae648b91db3f53db0b9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T08:57:57.987935Z","signature_b64":"eQsLXX1lu0DN4t6KsxiVmmFAR2wYW4OBTyBLFeb9NLmXW5FGl9EyOPUcgcP3ekYpuvicTqRFtxBqZSq3V0VxDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d4a917f8f08471605b5574e3239cd61d65d40d3a9c69fae648b91db3f53db0b9","last_reissued_at":"2026-07-05T08:57:57.987481Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T08:57:57.987481Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2407.18198","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":"2026-07-05T08:57:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"alC9ti9vVdQyoferupPdBVXweI2xcvxgFBJdhVo5EEaHfsN790UjRxHCIDcRf2xjtFRxqwCgb8lsJer0KircAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T07:20:31.918169Z"},"content_sha256":"bbc66184fa2d327702ebc8787220b594d3ea6e8687abdace33530c925255a477","schema_version":"1.0","event_id":"sha256:bbc66184fa2d327702ebc8787220b594d3ea6e8687abdace33530c925255a477"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:2SURP6HQQRYWAW2VOTRSHHGWDV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Next Generation LLRF Control Platform for Compact C-band Linear Accelerator","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"physics.acc-ph","authors_text":"Chao Liu, Emilio Nanni, Larry Ruckman, Ryan Herbst","submitted_at":"2024-07-25T17:08:35Z","abstract_excerpt":"The Low-Level RF (LLRF) control circuits of linear accelerators (LINACs) are conventionally realized with heterodyne based architectures, which have analog RF mixers for up and down conversion with discrete data converters. We have developed a new LLRF platform for C-band linear accelerator based on the Frequency System-on-Chip (RFSoC) device from AMD Xilinx. The integrated data converters in the RFSoC can directly sample the RF signals in C-band and perform the up and down mixing digitally. The programmable logic and processors required for signal processing for the LLRF control system are al"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2407.18198","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2407.18198/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":"2026-07-05T08:57:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HWnhvzKP/9/H8hSqpY/BGxrbIWTGFPON+mGHnnnHmSauK1tTB0KMxL632pzzvmnHerkWH4KwpmBd5WAATntPBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T07:20:31.918576Z"},"content_sha256":"f3ac8cb0b3c51d3afc7052051a6f4b404e01e3e514811e19a6d2fc9aefa9e988","schema_version":"1.0","event_id":"sha256:f3ac8cb0b3c51d3afc7052051a6f4b404e01e3e514811e19a6d2fc9aefa9e988"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2SURP6HQQRYWAW2VOTRSHHGWDV/bundle.json","state_url":"https://pith.science/pith/2SURP6HQQRYWAW2VOTRSHHGWDV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2SURP6HQQRYWAW2VOTRSHHGWDV/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":"2026-07-07T07:20:31Z","links":{"resolver":"https://pith.science/pith/2SURP6HQQRYWAW2VOTRSHHGWDV","bundle":"https://pith.science/pith/2SURP6HQQRYWAW2VOTRSHHGWDV/bundle.json","state":"https://pith.science/pith/2SURP6HQQRYWAW2VOTRSHHGWDV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2SURP6HQQRYWAW2VOTRSHHGWDV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:2SURP6HQQRYWAW2VOTRSHHGWDV","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":"11524f595e051662cab49e1fecbe8ea8b9bbf25b43ff4eb2d4b91fa17641ae7d","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2024-07-25T17:08:35Z","title_canon_sha256":"208343adfbd3201ca3b7d63b0eb0be025fa7f107bdd084c964c69ac1343db2fd"},"schema_version":"1.0","source":{"id":"2407.18198","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2407.18198","created_at":"2026-07-05T08:57:57Z"},{"alias_kind":"arxiv_version","alias_value":"2407.18198v2","created_at":"2026-07-05T08:57:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2407.18198","created_at":"2026-07-05T08:57:57Z"},{"alias_kind":"pith_short_12","alias_value":"2SURP6HQQRYW","created_at":"2026-07-05T08:57:57Z"},{"alias_kind":"pith_short_16","alias_value":"2SURP6HQQRYWAW2V","created_at":"2026-07-05T08:57:57Z"},{"alias_kind":"pith_short_8","alias_value":"2SURP6HQ","created_at":"2026-07-05T08:57:57Z"}],"graph_snapshots":[{"event_id":"sha256:f3ac8cb0b3c51d3afc7052051a6f4b404e01e3e514811e19a6d2fc9aefa9e988","target":"graph","created_at":"2026-07-05T08:57:57Z","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/2407.18198/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The Low-Level RF (LLRF) control circuits of linear accelerators (LINACs) are conventionally realized with heterodyne based architectures, which have analog RF mixers for up and down conversion with discrete data converters. We have developed a new LLRF platform for C-band linear accelerator based on the Frequency System-on-Chip (RFSoC) device from AMD Xilinx. The integrated data converters in the RFSoC can directly sample the RF signals in C-band and perform the up and down mixing digitally. The programmable logic and processors required for signal processing for the LLRF control system are al","authors_text":"Chao Liu, Emilio Nanni, Larry Ruckman, Ryan Herbst","cross_cats":["astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2024-07-25T17:08:35Z","title":"Next Generation LLRF Control Platform for Compact C-band Linear Accelerator"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2407.18198","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:bbc66184fa2d327702ebc8787220b594d3ea6e8687abdace33530c925255a477","target":"record","created_at":"2026-07-05T08:57:57Z","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":"11524f595e051662cab49e1fecbe8ea8b9bbf25b43ff4eb2d4b91fa17641ae7d","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2024-07-25T17:08:35Z","title_canon_sha256":"208343adfbd3201ca3b7d63b0eb0be025fa7f107bdd084c964c69ac1343db2fd"},"schema_version":"1.0","source":{"id":"2407.18198","kind":"arxiv","version":2}},"canonical_sha256":"d4a917f8f08471605b5574e3239cd61d65d40d3a9c69fae648b91db3f53db0b9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d4a917f8f08471605b5574e3239cd61d65d40d3a9c69fae648b91db3f53db0b9","first_computed_at":"2026-07-05T08:57:57.987481Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T08:57:57.987481Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"eQsLXX1lu0DN4t6KsxiVmmFAR2wYW4OBTyBLFeb9NLmXW5FGl9EyOPUcgcP3ekYpuvicTqRFtxBqZSq3V0VxDA==","signature_status":"signed_v1","signed_at":"2026-07-05T08:57:57.987935Z","signed_message":"canonical_sha256_bytes"},"source_id":"2407.18198","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bbc66184fa2d327702ebc8787220b594d3ea6e8687abdace33530c925255a477","sha256:f3ac8cb0b3c51d3afc7052051a6f4b404e01e3e514811e19a6d2fc9aefa9e988"],"state_sha256":"2364b75d06560dcebbf708b32d8ccf11bd5e0d667c0900f365c17047b1189fca"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fJr4VDyC49X9efLNTVaNlEhgcMYYnXJh5CDkpJ9O2035B/QOaZP9VAC0o04PZaUAtVd6S7wm6DVv5jBjidQFDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T07:20:31.920686Z","bundle_sha256":"8cbefa6886c9a6cd5e3c8d261f5bd774391a04334940248a69393ee18d05fd8a"}}