{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2017:VUEJOPKV7XRHMLBSFLXO65KPTO","short_pith_number":"pith:VUEJOPKV","schema_version":"1.0","canonical_sha256":"ad08973d55fde2762c322aeeef754f9b87123a6f032ced312ba42605704fbadf","source":{"kind":"arxiv","id":"1705.02333","version":2},"attestation_state":"computed","paper":{"title":"New method to design stellarator coils without the winding surface","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.comp-ph"],"primary_cat":"physics.plasm-ph","authors_text":"Caoxiang Zhu, Stuart R. Hudson, Yuanxi Wan, Yuntao Song","submitted_at":"2017-05-05T17:59:27Z","abstract_excerpt":"Finding an easy-to-build coils set has been a critical issue for stellarator design for decades. Conventional approaches assume a toroidal \"winding\" surface. We'll investigate if the existence of winding surface unnecessarily constrains the optimization, and a new method to design coils for stellarators is presented. Each discrete coil is represented as an arbitrary, closed, one-dimensional curve embedded in three-dimensional space. A target function to be minimized that covers both physical requirements and engineering constraints is constructed. The derivatives of the target function are cal"},"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":"1705.02333","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2017-05-05T17:59:27Z","cross_cats_sorted":["physics.comp-ph"],"title_canon_sha256":"9fe507ae445d4a7fb1dff749967a6f22e44642dcd46174483cbbf7273e2edb9a","abstract_canon_sha256":"50a148427583ff491933d228934bda9505cfadd32280bccf591170d3a730a897"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:30:04.526236Z","signature_b64":"rHy4rcWrfqO25qkZqr2lZhPN+FXo5MPumjwhrhYKmYTMxBEPbWCxwkLXSM2YIZPn6bo5P6zyZF+EHA8ks+zrDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ad08973d55fde2762c322aeeef754f9b87123a6f032ced312ba42605704fbadf","last_reissued_at":"2026-05-18T00:30:04.525761Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:30:04.525761Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"New method to design stellarator coils without the winding surface","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.comp-ph"],"primary_cat":"physics.plasm-ph","authors_text":"Caoxiang Zhu, Stuart R. Hudson, Yuanxi Wan, Yuntao Song","submitted_at":"2017-05-05T17:59:27Z","abstract_excerpt":"Finding an easy-to-build coils set has been a critical issue for stellarator design for decades. Conventional approaches assume a toroidal \"winding\" surface. We'll investigate if the existence of winding surface unnecessarily constrains the optimization, and a new method to design coils for stellarators is presented. Each discrete coil is represented as an arbitrary, closed, one-dimensional curve embedded in three-dimensional space. A target function to be minimized that covers both physical requirements and engineering constraints is constructed. The derivatives of the target function are cal"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.02333","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":""},"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":"1705.02333","created_at":"2026-05-18T00:30:04.525844+00:00"},{"alias_kind":"arxiv_version","alias_value":"1705.02333v2","created_at":"2026-05-18T00:30:04.525844+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1705.02333","created_at":"2026-05-18T00:30:04.525844+00:00"},{"alias_kind":"pith_short_12","alias_value":"VUEJOPKV7XRH","created_at":"2026-05-18T12:31:49.984773+00:00"},{"alias_kind":"pith_short_16","alias_value":"VUEJOPKV7XRHMLBS","created_at":"2026-05-18T12:31:49.984773+00:00"},{"alias_kind":"pith_short_8","alias_value":"VUEJOPKV","created_at":"2026-05-18T12:31:49.984773+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/VUEJOPKV7XRHMLBSFLXO65KPTO","json":"https://pith.science/pith/VUEJOPKV7XRHMLBSFLXO65KPTO.json","graph_json":"https://pith.science/api/pith-number/VUEJOPKV7XRHMLBSFLXO65KPTO/graph.json","events_json":"https://pith.science/api/pith-number/VUEJOPKV7XRHMLBSFLXO65KPTO/events.json","paper":"https://pith.science/paper/VUEJOPKV"},"agent_actions":{"view_html":"https://pith.science/pith/VUEJOPKV7XRHMLBSFLXO65KPTO","download_json":"https://pith.science/pith/VUEJOPKV7XRHMLBSFLXO65KPTO.json","view_paper":"https://pith.science/paper/VUEJOPKV","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1705.02333&json=true","fetch_graph":"https://pith.science/api/pith-number/VUEJOPKV7XRHMLBSFLXO65KPTO/graph.json","fetch_events":"https://pith.science/api/pith-number/VUEJOPKV7XRHMLBSFLXO65KPTO/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/VUEJOPKV7XRHMLBSFLXO65KPTO/action/timestamp_anchor","attest_storage":"https://pith.science/pith/VUEJOPKV7XRHMLBSFLXO65KPTO/action/storage_attestation","attest_author":"https://pith.science/pith/VUEJOPKV7XRHMLBSFLXO65KPTO/action/author_attestation","sign_citation":"https://pith.science/pith/VUEJOPKV7XRHMLBSFLXO65KPTO/action/citation_signature","submit_replication":"https://pith.science/pith/VUEJOPKV7XRHMLBSFLXO65KPTO/action/replication_record"}},"created_at":"2026-05-18T00:30:04.525844+00:00","updated_at":"2026-05-18T00:30:04.525844+00:00"}