{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2020:TN7G5C7X3TYKKVJ3QKNZ7OTIFM","short_pith_number":"pith:TN7G5C7X","schema_version":"1.0","canonical_sha256":"9b7e6e8bf7dcf0a5553b829b9fba682b310eb270a17943e766a30d49263657ac","source":{"kind":"arxiv","id":"2010.02033","version":2},"attestation_state":"computed","paper":{"title":"Single-stage gradient-based stellarator coil design: Optimization for near-axis quasi-symmetry","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.NA","math.NA","math.OC","physics.comp-ph"],"primary_cat":"physics.plasm-ph","authors_text":"Andrew Giuliani, Antoine Cerfon, Florian Wechsung, Georg Stadler, Matt Landreman","submitted_at":"2020-10-01T05:19:06Z","abstract_excerpt":"We present a new coil design paradigm for magnetic confinement in stellarators. Our approach directly optimizes coil shapes and coil currents to produce a vacuum quasi-symmetric magnetic field with a target rotational transform on the magnetic axis. This approach differs from the traditional two-stage approach in which first a magnetic configuration with desirable physics properties is found, and then coils to approximately realize this magnetic configuration are designed. The proposed single-stage approach allows us to find a compromise between confinement and engineering requirements, i.e., "},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2010.02033","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2020-10-01T05:19:06Z","cross_cats_sorted":["cs.NA","math.NA","math.OC","physics.comp-ph"],"title_canon_sha256":"b9be7e02c041a5a88771e78a38add6f1bfc4999007e5e19c775ee67259b9d257","abstract_canon_sha256":"31c7f0d32ae87d192db6f567550a7f4069f047da379c9c95d64f4059a5ba2e0b"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:05:29.673655Z","signature_b64":"XFzSTR1bCHXYfYMZTvSQ4sZ+E3gzbN9xoLcfCZwqazVQeCwbwhHSKsZRc71DPBvHGO5TUd7sko65DfQa3bKcCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9b7e6e8bf7dcf0a5553b829b9fba682b310eb270a17943e766a30d49263657ac","last_reissued_at":"2026-07-05T04:05:29.673201Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:05:29.673201Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Single-stage gradient-based stellarator coil design: Optimization for near-axis quasi-symmetry","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.NA","math.NA","math.OC","physics.comp-ph"],"primary_cat":"physics.plasm-ph","authors_text":"Andrew Giuliani, Antoine Cerfon, Florian Wechsung, Georg Stadler, Matt Landreman","submitted_at":"2020-10-01T05:19:06Z","abstract_excerpt":"We present a new coil design paradigm for magnetic confinement in stellarators. Our approach directly optimizes coil shapes and coil currents to produce a vacuum quasi-symmetric magnetic field with a target rotational transform on the magnetic axis. This approach differs from the traditional two-stage approach in which first a magnetic configuration with desirable physics properties is found, and then coils to approximately realize this magnetic configuration are designed. The proposed single-stage approach allows us to find a compromise between confinement and engineering requirements, i.e., "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2010.02033","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/2010.02033/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2010.02033","created_at":"2026-07-05T04:05:29.673263+00:00"},{"alias_kind":"arxiv_version","alias_value":"2010.02033v2","created_at":"2026-07-05T04:05:29.673263+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2010.02033","created_at":"2026-07-05T04:05:29.673263+00:00"},{"alias_kind":"pith_short_12","alias_value":"TN7G5C7X3TYK","created_at":"2026-07-05T04:05:29.673263+00:00"},{"alias_kind":"pith_short_16","alias_value":"TN7G5C7X3TYKKVJ3","created_at":"2026-07-05T04:05:29.673263+00:00"},{"alias_kind":"pith_short_8","alias_value":"TN7G5C7X","created_at":"2026-07-05T04:05:29.673263+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2508.09321","citing_title":"Surface Current Optimization and Coil-Cutting Algorithms for Stage-Two Stellarator Optimization","ref_index":21,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/TN7G5C7X3TYKKVJ3QKNZ7OTIFM","json":"https://pith.science/pith/TN7G5C7X3TYKKVJ3QKNZ7OTIFM.json","graph_json":"https://pith.science/api/pith-number/TN7G5C7X3TYKKVJ3QKNZ7OTIFM/graph.json","events_json":"https://pith.science/api/pith-number/TN7G5C7X3TYKKVJ3QKNZ7OTIFM/events.json","paper":"https://pith.science/paper/TN7G5C7X"},"agent_actions":{"view_html":"https://pith.science/pith/TN7G5C7X3TYKKVJ3QKNZ7OTIFM","download_json":"https://pith.science/pith/TN7G5C7X3TYKKVJ3QKNZ7OTIFM.json","view_paper":"https://pith.science/paper/TN7G5C7X","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2010.02033&json=true","fetch_graph":"https://pith.science/api/pith-number/TN7G5C7X3TYKKVJ3QKNZ7OTIFM/graph.json","fetch_events":"https://pith.science/api/pith-number/TN7G5C7X3TYKKVJ3QKNZ7OTIFM/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/TN7G5C7X3TYKKVJ3QKNZ7OTIFM/action/timestamp_anchor","attest_storage":"https://pith.science/pith/TN7G5C7X3TYKKVJ3QKNZ7OTIFM/action/storage_attestation","attest_author":"https://pith.science/pith/TN7G5C7X3TYKKVJ3QKNZ7OTIFM/action/author_attestation","sign_citation":"https://pith.science/pith/TN7G5C7X3TYKKVJ3QKNZ7OTIFM/action/citation_signature","submit_replication":"https://pith.science/pith/TN7G5C7X3TYKKVJ3QKNZ7OTIFM/action/replication_record"}},"created_at":"2026-07-05T04:05:29.673263+00:00","updated_at":"2026-07-05T04:05:29.673263+00:00"}