{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:Q4UIHHZZLHSZ6XT5L7USSZZTZB","short_pith_number":"pith:Q4UIHHZZ","canonical_record":{"source":{"id":"1904.01193","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2019-04-02T03:32:15Z","cross_cats_sorted":[],"title_canon_sha256":"245045abd2fe1e499bcfea2c4e10d1bf85f862a121fcd537fb0668cda13a0880","abstract_canon_sha256":"a4cf6dc5abfa95f25b6607c36a1e38d99d5935757d673df6879f8fb8521bc7f9"},"schema_version":"1.0"},"canonical_sha256":"8728839f3959e59f5e7d5fe9296733c86670b553548060d03ee459f1dc2600e7","source":{"kind":"arxiv","id":"1904.01193","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.01193","created_at":"2026-05-17T23:49:35Z"},{"alias_kind":"arxiv_version","alias_value":"1904.01193v1","created_at":"2026-05-17T23:49:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.01193","created_at":"2026-05-17T23:49:35Z"},{"alias_kind":"pith_short_12","alias_value":"Q4UIHHZZLHSZ","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"Q4UIHHZZLHSZ6XT5","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"Q4UIHHZZ","created_at":"2026-05-18T12:33:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:Q4UIHHZZLHSZ6XT5L7USSZZTZB","target":"record","payload":{"canonical_record":{"source":{"id":"1904.01193","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2019-04-02T03:32:15Z","cross_cats_sorted":[],"title_canon_sha256":"245045abd2fe1e499bcfea2c4e10d1bf85f862a121fcd537fb0668cda13a0880","abstract_canon_sha256":"a4cf6dc5abfa95f25b6607c36a1e38d99d5935757d673df6879f8fb8521bc7f9"},"schema_version":"1.0"},"canonical_sha256":"8728839f3959e59f5e7d5fe9296733c86670b553548060d03ee459f1dc2600e7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:49:35.605434Z","signature_b64":"GrVNfJu7ku+HexG3MZ1bGf3q9ek4YqEiYQnZoUvO5uSdZT5ervwnHG+2OB8Pds41oXutC0+0dNYL0SwF/DojCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8728839f3959e59f5e7d5fe9296733c86670b553548060d03ee459f1dc2600e7","last_reissued_at":"2026-05-17T23:49:35.604878Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:49:35.604878Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1904.01193","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":"2026-05-17T23:49:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DCNJkXKpd0h3PpqG7rEDetX1RGpIXb/GR1oJQqH+7OzZoXeeKxC8FPkYtRSuTLPdQAzj8Px7eiX7UIXJuotRCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T05:52:44.969110Z"},"content_sha256":"414979a96d1bd14a381fa59161169bcdb44ed9cccfe1a9e59f2d0ac3a6c8e6a4","schema_version":"1.0","event_id":"sha256:414979a96d1bd14a381fa59161169bcdb44ed9cccfe1a9e59f2d0ac3a6c8e6a4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:Q4UIHHZZLHSZ6XT5L7USSZZTZB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Subdominant modes and optimization trends of DIII-D reverse magnetic shear configurations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.plasm-ph","authors_text":"D. A. Spong, E. D'Azevedo, J. Varela, L. Garcia, M.A. Van Zeeland, M. Murakami, S. Munaretto","submitted_at":"2019-04-02T03:32:15Z","abstract_excerpt":"Alfven Eigenmodes and magneto-hydrodynamic modes are destabilized in DIII-D reverse magnetic shear configurations and may limit the performance of the device. We use the reduced MHD equations in a full 3D system, coupled with equations of density and parallel velocity moments for the energetic particles (with gyro-fluid closures) as well as the geodesic acoustic wave dynamics. The aim of the study consists in finding ways to avoid or minimize MHD and AE activity for different magnetic field configurations and neutral beam injection operational regimes. The simulations show at the beginning of "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.01193","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":"2026-05-17T23:49:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"X9enGfLCH0a4yefPPqg2FJM7g3S6nnRDiY6DJ8iM29pL2Sm3RVFZMxPeb19i5f6Z39L+VAA7NW9cLswgujJ1Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T05:52:44.969473Z"},"content_sha256":"5bcca3331d41401b83df7ff89ddb54039ae30ef69123e340f2a18a72aa1f76cb","schema_version":"1.0","event_id":"sha256:5bcca3331d41401b83df7ff89ddb54039ae30ef69123e340f2a18a72aa1f76cb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Q4UIHHZZLHSZ6XT5L7USSZZTZB/bundle.json","state_url":"https://pith.science/pith/Q4UIHHZZLHSZ6XT5L7USSZZTZB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Q4UIHHZZLHSZ6XT5L7USSZZTZB/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":"2026-06-03T05:52:44Z","links":{"resolver":"https://pith.science/pith/Q4UIHHZZLHSZ6XT5L7USSZZTZB","bundle":"https://pith.science/pith/Q4UIHHZZLHSZ6XT5L7USSZZTZB/bundle.json","state":"https://pith.science/pith/Q4UIHHZZLHSZ6XT5L7USSZZTZB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Q4UIHHZZLHSZ6XT5L7USSZZTZB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:Q4UIHHZZLHSZ6XT5L7USSZZTZB","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":"a4cf6dc5abfa95f25b6607c36a1e38d99d5935757d673df6879f8fb8521bc7f9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2019-04-02T03:32:15Z","title_canon_sha256":"245045abd2fe1e499bcfea2c4e10d1bf85f862a121fcd537fb0668cda13a0880"},"schema_version":"1.0","source":{"id":"1904.01193","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.01193","created_at":"2026-05-17T23:49:35Z"},{"alias_kind":"arxiv_version","alias_value":"1904.01193v1","created_at":"2026-05-17T23:49:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.01193","created_at":"2026-05-17T23:49:35Z"},{"alias_kind":"pith_short_12","alias_value":"Q4UIHHZZLHSZ","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"Q4UIHHZZLHSZ6XT5","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"Q4UIHHZZ","created_at":"2026-05-18T12:33:24Z"}],"graph_snapshots":[{"event_id":"sha256:5bcca3331d41401b83df7ff89ddb54039ae30ef69123e340f2a18a72aa1f76cb","target":"graph","created_at":"2026-05-17T23:49:35Z","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":"Alfven Eigenmodes and magneto-hydrodynamic modes are destabilized in DIII-D reverse magnetic shear configurations and may limit the performance of the device. We use the reduced MHD equations in a full 3D system, coupled with equations of density and parallel velocity moments for the energetic particles (with gyro-fluid closures) as well as the geodesic acoustic wave dynamics. The aim of the study consists in finding ways to avoid or minimize MHD and AE activity for different magnetic field configurations and neutral beam injection operational regimes. The simulations show at the beginning of ","authors_text":"D. A. Spong, E. D'Azevedo, J. Varela, L. Garcia, M.A. Van Zeeland, M. Murakami, S. Munaretto","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2019-04-02T03:32:15Z","title":"Subdominant modes and optimization trends of DIII-D reverse magnetic shear configurations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.01193","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":"sha256:414979a96d1bd14a381fa59161169bcdb44ed9cccfe1a9e59f2d0ac3a6c8e6a4","target":"record","created_at":"2026-05-17T23:49:35Z","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":"a4cf6dc5abfa95f25b6607c36a1e38d99d5935757d673df6879f8fb8521bc7f9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2019-04-02T03:32:15Z","title_canon_sha256":"245045abd2fe1e499bcfea2c4e10d1bf85f862a121fcd537fb0668cda13a0880"},"schema_version":"1.0","source":{"id":"1904.01193","kind":"arxiv","version":1}},"canonical_sha256":"8728839f3959e59f5e7d5fe9296733c86670b553548060d03ee459f1dc2600e7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8728839f3959e59f5e7d5fe9296733c86670b553548060d03ee459f1dc2600e7","first_computed_at":"2026-05-17T23:49:35.604878Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:49:35.604878Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"GrVNfJu7ku+HexG3MZ1bGf3q9ek4YqEiYQnZoUvO5uSdZT5ervwnHG+2OB8Pds41oXutC0+0dNYL0SwF/DojCQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:49:35.605434Z","signed_message":"canonical_sha256_bytes"},"source_id":"1904.01193","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:414979a96d1bd14a381fa59161169bcdb44ed9cccfe1a9e59f2d0ac3a6c8e6a4","sha256:5bcca3331d41401b83df7ff89ddb54039ae30ef69123e340f2a18a72aa1f76cb"],"state_sha256":"5f43048f0cd01a90130caa4bd5e1558996981f3a4f773316a46094f04de809d2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rdJuoCoTnGoh7/godcxJ4U/mglu8TEwfPYQKWxnHBbHIWLe9eAa+fUzPDExMQwkRAv2UcqaVVb8gjZY16gtmBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T05:52:44.971422Z","bundle_sha256":"3d1740e916ee8d56320b8809f9b00c65c10d0d89646d5ba7ec90b5987d4a9be8"}}