{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:DY2UUEJXMAWSZGD7MOW6ZN6XOO","short_pith_number":"pith:DY2UUEJX","canonical_record":{"source":{"id":"2211.04083","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2022-11-08T08:25:39Z","cross_cats_sorted":["physics.acc-ph"],"title_canon_sha256":"d62fbf9686019d0f9aa54b6dc89e81608573c4400e7c576b479ec166dc518a99","abstract_canon_sha256":"2cb53f6d7b28f748a433c0ca0256e40d8ccfeb4989e943383c93547991f9d3ca"},"schema_version":"1.0"},"canonical_sha256":"1e354a1137602d2c987f63adecb7d7739db0adfb089d9940ace829366580eb11","source":{"kind":"arxiv","id":"2211.04083","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2211.04083","created_at":"2026-07-05T05:14:01Z"},{"alias_kind":"arxiv_version","alias_value":"2211.04083v1","created_at":"2026-07-05T05:14:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2211.04083","created_at":"2026-07-05T05:14:01Z"},{"alias_kind":"pith_short_12","alias_value":"DY2UUEJXMAWS","created_at":"2026-07-05T05:14:01Z"},{"alias_kind":"pith_short_16","alias_value":"DY2UUEJXMAWSZGD7","created_at":"2026-07-05T05:14:01Z"},{"alias_kind":"pith_short_8","alias_value":"DY2UUEJX","created_at":"2026-07-05T05:14:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:DY2UUEJXMAWSZGD7MOW6ZN6XOO","target":"record","payload":{"canonical_record":{"source":{"id":"2211.04083","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2022-11-08T08:25:39Z","cross_cats_sorted":["physics.acc-ph"],"title_canon_sha256":"d62fbf9686019d0f9aa54b6dc89e81608573c4400e7c576b479ec166dc518a99","abstract_canon_sha256":"2cb53f6d7b28f748a433c0ca0256e40d8ccfeb4989e943383c93547991f9d3ca"},"schema_version":"1.0"},"canonical_sha256":"1e354a1137602d2c987f63adecb7d7739db0adfb089d9940ace829366580eb11","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:14:01.893074Z","signature_b64":"Mq0niX/cLMDf8ip/XyCXoOgfTdOD6UBXoyAcPOoQjtaAUHuOiYvILIjTVe5sLQHyRfZ0kLsi6Yjt2OQyb+ytAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1e354a1137602d2c987f63adecb7d7739db0adfb089d9940ace829366580eb11","last_reissued_at":"2026-07-05T05:14:01.892669Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:14:01.892669Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2211.04083","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":"2026-07-05T05:14:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bAKtbFAt8mo/PNrtRNPCMGXSQoJ14glue1ZsKj2f5r+0wOjlyKsykkSy9HwEqumYAXvDoKmDDBmTJdzzqopPDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T19:07:45.005866Z"},"content_sha256":"6235db5c332cdec33c2bdcd381c7f5bbadf5ddf5cb896037416192635c9f9fd0","schema_version":"1.0","event_id":"sha256:6235db5c332cdec33c2bdcd381c7f5bbadf5ddf5cb896037416192635c9f9fd0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:DY2UUEJXMAWSZGD7MOW6ZN6XOO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"First Beam Characterization by Means of Emission Spectroscopy in the NIO1 Experiment","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.acc-ph"],"primary_cat":"physics.plasm-ph","authors_text":"B. Zaniol, G. Serianni, M. Barbisan, M. Cavenago, R. Pasqualotto","submitted_at":"2022-11-08T08:25:39Z","abstract_excerpt":"The NIO1 experiment hosts a flexible RF H- ion source, developed by INFN-LNL and Consorzio RFX to improve the present concepts for the production and acceleration of negative ions. The source is also used to benchmark the instrumentation dedicated to the ITER neutral beam test facility. Many diagnostics are installed in NIO1 to characterize the source and the extracted negative ion beam. Among them, Beam Emission Spectroscopy (BES) has been used in NIO1 to measure the divergence and the uniformity of the beam, together with the fraction of beam ions which was neutralized inside the acceleratio"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2211.04083","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/2211.04083/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":"2026-07-05T05:14:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/Ss6zB0fjqXXDv8P0vdQQ/h2V2eQRiZQ9XTrnaZmbNH9vrVyeDdAgLa7cLh9GmNlmMF/Q7vDrJjPaAOpu1xgDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T19:07:45.006245Z"},"content_sha256":"96479fa78e66467be092a398595c04dd557327e63e43b339c0311e7bed0c33de","schema_version":"1.0","event_id":"sha256:96479fa78e66467be092a398595c04dd557327e63e43b339c0311e7bed0c33de"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DY2UUEJXMAWSZGD7MOW6ZN6XOO/bundle.json","state_url":"https://pith.science/pith/DY2UUEJXMAWSZGD7MOW6ZN6XOO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DY2UUEJXMAWSZGD7MOW6ZN6XOO/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":"2026-07-06T19:07:45Z","links":{"resolver":"https://pith.science/pith/DY2UUEJXMAWSZGD7MOW6ZN6XOO","bundle":"https://pith.science/pith/DY2UUEJXMAWSZGD7MOW6ZN6XOO/bundle.json","state":"https://pith.science/pith/DY2UUEJXMAWSZGD7MOW6ZN6XOO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DY2UUEJXMAWSZGD7MOW6ZN6XOO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:DY2UUEJXMAWSZGD7MOW6ZN6XOO","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":"2cb53f6d7b28f748a433c0ca0256e40d8ccfeb4989e943383c93547991f9d3ca","cross_cats_sorted":["physics.acc-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2022-11-08T08:25:39Z","title_canon_sha256":"d62fbf9686019d0f9aa54b6dc89e81608573c4400e7c576b479ec166dc518a99"},"schema_version":"1.0","source":{"id":"2211.04083","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2211.04083","created_at":"2026-07-05T05:14:01Z"},{"alias_kind":"arxiv_version","alias_value":"2211.04083v1","created_at":"2026-07-05T05:14:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2211.04083","created_at":"2026-07-05T05:14:01Z"},{"alias_kind":"pith_short_12","alias_value":"DY2UUEJXMAWS","created_at":"2026-07-05T05:14:01Z"},{"alias_kind":"pith_short_16","alias_value":"DY2UUEJXMAWSZGD7","created_at":"2026-07-05T05:14:01Z"},{"alias_kind":"pith_short_8","alias_value":"DY2UUEJX","created_at":"2026-07-05T05:14:01Z"}],"graph_snapshots":[{"event_id":"sha256:96479fa78e66467be092a398595c04dd557327e63e43b339c0311e7bed0c33de","target":"graph","created_at":"2026-07-05T05:14:01Z","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/2211.04083/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The NIO1 experiment hosts a flexible RF H- ion source, developed by INFN-LNL and Consorzio RFX to improve the present concepts for the production and acceleration of negative ions. The source is also used to benchmark the instrumentation dedicated to the ITER neutral beam test facility. Many diagnostics are installed in NIO1 to characterize the source and the extracted negative ion beam. Among them, Beam Emission Spectroscopy (BES) has been used in NIO1 to measure the divergence and the uniformity of the beam, together with the fraction of beam ions which was neutralized inside the acceleratio","authors_text":"B. Zaniol, G. Serianni, M. Barbisan, M. Cavenago, R. Pasqualotto","cross_cats":["physics.acc-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2022-11-08T08:25:39Z","title":"First Beam Characterization by Means of Emission Spectroscopy in the NIO1 Experiment"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2211.04083","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":"sha256:6235db5c332cdec33c2bdcd381c7f5bbadf5ddf5cb896037416192635c9f9fd0","target":"record","created_at":"2026-07-05T05:14:01Z","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":"2cb53f6d7b28f748a433c0ca0256e40d8ccfeb4989e943383c93547991f9d3ca","cross_cats_sorted":["physics.acc-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2022-11-08T08:25:39Z","title_canon_sha256":"d62fbf9686019d0f9aa54b6dc89e81608573c4400e7c576b479ec166dc518a99"},"schema_version":"1.0","source":{"id":"2211.04083","kind":"arxiv","version":1}},"canonical_sha256":"1e354a1137602d2c987f63adecb7d7739db0adfb089d9940ace829366580eb11","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1e354a1137602d2c987f63adecb7d7739db0adfb089d9940ace829366580eb11","first_computed_at":"2026-07-05T05:14:01.892669Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:14:01.892669Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Mq0niX/cLMDf8ip/XyCXoOgfTdOD6UBXoyAcPOoQjtaAUHuOiYvILIjTVe5sLQHyRfZ0kLsi6Yjt2OQyb+ytAg==","signature_status":"signed_v1","signed_at":"2026-07-05T05:14:01.893074Z","signed_message":"canonical_sha256_bytes"},"source_id":"2211.04083","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6235db5c332cdec33c2bdcd381c7f5bbadf5ddf5cb896037416192635c9f9fd0","sha256:96479fa78e66467be092a398595c04dd557327e63e43b339c0311e7bed0c33de"],"state_sha256":"9ea33629e877ac1202126e9851eb056b7176c797a4dbd1931b9515d0f4c09f4f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"62LU90vSMkWvjl1UGvBMyqSbaTBEPUF8PDL+2rmq4L06G3Sqz/phsABNeL3hVfRD8rSnQvx/UpijWoBvng12DA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-06T19:07:45.008127Z","bundle_sha256":"6cc38f00d00e9a52d12d8eae76737e088bcdc10a91e519d7cd0cef4f0acb9d8a"}}