{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:SG6RLM7OT5DEC72M7TYWIVDSIE","short_pith_number":"pith:SG6RLM7O","canonical_record":{"source":{"id":"2108.09648","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2021-08-22T06:08:36Z","cross_cats_sorted":[],"title_canon_sha256":"43239f5f83acc062829eb34f746766b114d1279d80c14fc4c001765d0455d694","abstract_canon_sha256":"a068bb0bb7d47968343c73c8b923e400f683dd1e40e1290d6926d40b041707fb"},"schema_version":"1.0"},"canonical_sha256":"91bd15b3ee9f46417f4cfcf164547241151be7730f014d2ad7498605c91f30ae","source":{"kind":"arxiv","id":"2108.09648","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2108.09648","created_at":"2026-07-05T03:10:55Z"},{"alias_kind":"arxiv_version","alias_value":"2108.09648v2","created_at":"2026-07-05T03:10:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2108.09648","created_at":"2026-07-05T03:10:55Z"},{"alias_kind":"pith_short_12","alias_value":"SG6RLM7OT5DE","created_at":"2026-07-05T03:10:55Z"},{"alias_kind":"pith_short_16","alias_value":"SG6RLM7OT5DEC72M","created_at":"2026-07-05T03:10:55Z"},{"alias_kind":"pith_short_8","alias_value":"SG6RLM7O","created_at":"2026-07-05T03:10:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:SG6RLM7OT5DEC72M7TYWIVDSIE","target":"record","payload":{"canonical_record":{"source":{"id":"2108.09648","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2021-08-22T06:08:36Z","cross_cats_sorted":[],"title_canon_sha256":"43239f5f83acc062829eb34f746766b114d1279d80c14fc4c001765d0455d694","abstract_canon_sha256":"a068bb0bb7d47968343c73c8b923e400f683dd1e40e1290d6926d40b041707fb"},"schema_version":"1.0"},"canonical_sha256":"91bd15b3ee9f46417f4cfcf164547241151be7730f014d2ad7498605c91f30ae","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:10:55.244585Z","signature_b64":"5d1r83rZmnWTqJEc5VlwHWNuP0j6oEId9ppV/pKttwWXSgv7rNY7sXVvBKVrcQzEh3nO9ZqPi9PJOc6RILcoCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"91bd15b3ee9f46417f4cfcf164547241151be7730f014d2ad7498605c91f30ae","last_reissued_at":"2026-07-05T03:10:55.244123Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:10:55.244123Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2108.09648","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":"2026-07-05T03:10:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"65OA52VDdYkLRD3GovX0fHmzv9o0NzuGnCuIqq5uqCVO8UKkfuuaO1nukXjJBue7D9Rq/O2Rejo/ROg+35U7Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-27T07:57:01.114732Z"},"content_sha256":"62174395151f50bcf1e733479e2bba1b4c4caa1af060ac2ed13270025537526b","schema_version":"1.0","event_id":"sha256:62174395151f50bcf1e733479e2bba1b4c4caa1af060ac2ed13270025537526b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:SG6RLM7OT5DEC72M7TYWIVDSIE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Non-inductive plasma current sustainment with stochastic electron cyclotron in EXL-50 spherical torus","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.plasm-ph","authors_text":"Adi Liu, Bing Liu, Debabrata Banerjee, Guo Dong, Mingyuan Wang, Shaodong Song, Shikui Cheng, Songjian Li, Tiantian Sun, Wenjun Liu, Yingying Li, Y. -K Martin Peng, Yuejiang Shi, Yunyang Song","submitted_at":"2021-08-22T06:08:36Z","abstract_excerpt":"The start-up and sustainment of a stochastic wave non-inductive current on a spherical torus was experimentally demonstrated for the first time using only electron cyclotron waves. The plasma current is insensitive to the injection angle of ECWs and approximately linearly correlated with the slope of the X-ray spectrum. Its direction is determined by the vertical magnetic field (BV). The temporal development in the number of X-ray bremsstrahlung photons with a specified energy is consistent with the stochastic heating model. Moreover, the ratio of Amps to Watts of the ECW is generally >1 kA/kW"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2108.09648","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/2108.09648/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":"2026-07-05T03:10:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5ugZE1H75sIJXPI1uNrLp/M97YR9Et3J14WaUzh4Xdu48ubNVMARnKbMIsG6uOCmKNSZtGQzLvzVgBVaUkoxCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-27T07:57:01.115118Z"},"content_sha256":"85ae11b2ead8ff61ff4a2ecdf06fd1d91cce5c9bc3c92a0a1b2666abe31b68d4","schema_version":"1.0","event_id":"sha256:85ae11b2ead8ff61ff4a2ecdf06fd1d91cce5c9bc3c92a0a1b2666abe31b68d4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SG6RLM7OT5DEC72M7TYWIVDSIE/bundle.json","state_url":"https://pith.science/pith/SG6RLM7OT5DEC72M7TYWIVDSIE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SG6RLM7OT5DEC72M7TYWIVDSIE/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":"2026-07-27T07:57:01Z","links":{"resolver":"https://pith.science/pith/SG6RLM7OT5DEC72M7TYWIVDSIE","bundle":"https://pith.science/pith/SG6RLM7OT5DEC72M7TYWIVDSIE/bundle.json","state":"https://pith.science/pith/SG6RLM7OT5DEC72M7TYWIVDSIE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SG6RLM7OT5DEC72M7TYWIVDSIE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:SG6RLM7OT5DEC72M7TYWIVDSIE","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":"a068bb0bb7d47968343c73c8b923e400f683dd1e40e1290d6926d40b041707fb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2021-08-22T06:08:36Z","title_canon_sha256":"43239f5f83acc062829eb34f746766b114d1279d80c14fc4c001765d0455d694"},"schema_version":"1.0","source":{"id":"2108.09648","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2108.09648","created_at":"2026-07-05T03:10:55Z"},{"alias_kind":"arxiv_version","alias_value":"2108.09648v2","created_at":"2026-07-05T03:10:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2108.09648","created_at":"2026-07-05T03:10:55Z"},{"alias_kind":"pith_short_12","alias_value":"SG6RLM7OT5DE","created_at":"2026-07-05T03:10:55Z"},{"alias_kind":"pith_short_16","alias_value":"SG6RLM7OT5DEC72M","created_at":"2026-07-05T03:10:55Z"},{"alias_kind":"pith_short_8","alias_value":"SG6RLM7O","created_at":"2026-07-05T03:10:55Z"}],"graph_snapshots":[{"event_id":"sha256:85ae11b2ead8ff61ff4a2ecdf06fd1d91cce5c9bc3c92a0a1b2666abe31b68d4","target":"graph","created_at":"2026-07-05T03:10:55Z","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/2108.09648/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The start-up and sustainment of a stochastic wave non-inductive current on a spherical torus was experimentally demonstrated for the first time using only electron cyclotron waves. The plasma current is insensitive to the injection angle of ECWs and approximately linearly correlated with the slope of the X-ray spectrum. Its direction is determined by the vertical magnetic field (BV). The temporal development in the number of X-ray bremsstrahlung photons with a specified energy is consistent with the stochastic heating model. Moreover, the ratio of Amps to Watts of the ECW is generally >1 kA/kW","authors_text":"Adi Liu, Bing Liu, Debabrata Banerjee, Guo Dong, Mingyuan Wang, Shaodong Song, Shikui Cheng, Songjian Li, Tiantian Sun, Wenjun Liu, Yingying Li, Y. -K Martin Peng, Yuejiang Shi, Yunyang Song","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2021-08-22T06:08:36Z","title":"Non-inductive plasma current sustainment with stochastic electron cyclotron in EXL-50 spherical torus"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2108.09648","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":"sha256:62174395151f50bcf1e733479e2bba1b4c4caa1af060ac2ed13270025537526b","target":"record","created_at":"2026-07-05T03:10:55Z","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":"a068bb0bb7d47968343c73c8b923e400f683dd1e40e1290d6926d40b041707fb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2021-08-22T06:08:36Z","title_canon_sha256":"43239f5f83acc062829eb34f746766b114d1279d80c14fc4c001765d0455d694"},"schema_version":"1.0","source":{"id":"2108.09648","kind":"arxiv","version":2}},"canonical_sha256":"91bd15b3ee9f46417f4cfcf164547241151be7730f014d2ad7498605c91f30ae","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"91bd15b3ee9f46417f4cfcf164547241151be7730f014d2ad7498605c91f30ae","first_computed_at":"2026-07-05T03:10:55.244123Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:10:55.244123Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5d1r83rZmnWTqJEc5VlwHWNuP0j6oEId9ppV/pKttwWXSgv7rNY7sXVvBKVrcQzEh3nO9ZqPi9PJOc6RILcoCQ==","signature_status":"signed_v1","signed_at":"2026-07-05T03:10:55.244585Z","signed_message":"canonical_sha256_bytes"},"source_id":"2108.09648","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:62174395151f50bcf1e733479e2bba1b4c4caa1af060ac2ed13270025537526b","sha256:85ae11b2ead8ff61ff4a2ecdf06fd1d91cce5c9bc3c92a0a1b2666abe31b68d4"],"state_sha256":"4b6431ed21eafac6c9fbb935565f8f2888e6d2715e725113b4c51b35f438b953"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"83zRMGmXsxgTjF7IeCWI2i8+ozghPxozhS5+a5ANTkFoDmYr3j9aZJnZCu1XO8M9S2ihPVtY8b9rj0goimi2BA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-27T07:57:01.117801Z","bundle_sha256":"eda22439e09d2783f1915bd93acec0c0cff884ea67001a81d467f750f0e0a574"}}