{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2023:GZ6EP6TWMBHYTV3TGIAVE4J227","short_pith_number":"pith:GZ6EP6TW","schema_version":"1.0","canonical_sha256":"367c47fa76604f89d773320152713ad7d3ce05fa1f8fa277495c064dc6f2de90","source":{"kind":"arxiv","id":"2306.09003","version":1},"attestation_state":"computed","paper":{"title":"A compact low energy proton source","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.plasm-ph"],"primary_cat":"physics.ins-det","authors_text":"A. Lanz, A. Weiser, D. J. Murtagh, E. D. Hunter, E. Widmann, M. C. Simon","submitted_at":"2023-06-15T10:00:41Z","abstract_excerpt":"A low energy proton source for non-neutral plasma experiments was developed. Electrons from a hot filament ionize H$_2$ gas inside a geometrically compensated Penning trap to produce protons via dissociative ionization. A rotating wall electric field destabilizes the unwanted H$_2^+$ and H$_3^+$ generated in the process while concentrating protons at the center of the trap. The source produces bunches of protons with relatively low ion contamination (5.5% H$_2^+$ and 15.5% H$_3^+$), with energy tunable from 35 to 300 eV."},"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":"2306.09003","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2023-06-15T10:00:41Z","cross_cats_sorted":["physics.plasm-ph"],"title_canon_sha256":"124a8d659acfc7544df48d5aec4eefdc80115d01ef0a15130b9fedd5fd400484","abstract_canon_sha256":"e1d0ecf365ea9f54426c343a1cd4c4d8fa43a23056ad369f651f2ea6f56c329e"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:56:34.644883Z","signature_b64":"gAG+SLWjtDLsXH/0lKXs/T4lEtm6jc0d0Y2FcevafiL5IhSTa9FUeYmyDil1t6+Z4bgyiFSEIc2iS2Glj9mqDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"367c47fa76604f89d773320152713ad7d3ce05fa1f8fa277495c064dc6f2de90","last_reissued_at":"2026-07-05T06:56:34.644420Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:56:34.644420Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A compact low energy proton source","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.plasm-ph"],"primary_cat":"physics.ins-det","authors_text":"A. Lanz, A. Weiser, D. J. Murtagh, E. D. Hunter, E. Widmann, M. C. Simon","submitted_at":"2023-06-15T10:00:41Z","abstract_excerpt":"A low energy proton source for non-neutral plasma experiments was developed. Electrons from a hot filament ionize H$_2$ gas inside a geometrically compensated Penning trap to produce protons via dissociative ionization. A rotating wall electric field destabilizes the unwanted H$_2^+$ and H$_3^+$ generated in the process while concentrating protons at the center of the trap. The source produces bunches of protons with relatively low ion contamination (5.5% H$_2^+$ and 15.5% H$_3^+$), with energy tunable from 35 to 300 eV."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2306.09003","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/2306.09003/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":"2306.09003","created_at":"2026-07-05T06:56:34.644469+00:00"},{"alias_kind":"arxiv_version","alias_value":"2306.09003v1","created_at":"2026-07-05T06:56:34.644469+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2306.09003","created_at":"2026-07-05T06:56:34.644469+00:00"},{"alias_kind":"pith_short_12","alias_value":"GZ6EP6TWMBHY","created_at":"2026-07-05T06:56:34.644469+00:00"},{"alias_kind":"pith_short_16","alias_value":"GZ6EP6TWMBHYTV3T","created_at":"2026-07-05T06:56:34.644469+00:00"},{"alias_kind":"pith_short_8","alias_value":"GZ6EP6TW","created_at":"2026-07-05T06:56:34.644469+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/GZ6EP6TWMBHYTV3TGIAVE4J227","json":"https://pith.science/pith/GZ6EP6TWMBHYTV3TGIAVE4J227.json","graph_json":"https://pith.science/api/pith-number/GZ6EP6TWMBHYTV3TGIAVE4J227/graph.json","events_json":"https://pith.science/api/pith-number/GZ6EP6TWMBHYTV3TGIAVE4J227/events.json","paper":"https://pith.science/paper/GZ6EP6TW"},"agent_actions":{"view_html":"https://pith.science/pith/GZ6EP6TWMBHYTV3TGIAVE4J227","download_json":"https://pith.science/pith/GZ6EP6TWMBHYTV3TGIAVE4J227.json","view_paper":"https://pith.science/paper/GZ6EP6TW","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2306.09003&json=true","fetch_graph":"https://pith.science/api/pith-number/GZ6EP6TWMBHYTV3TGIAVE4J227/graph.json","fetch_events":"https://pith.science/api/pith-number/GZ6EP6TWMBHYTV3TGIAVE4J227/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/GZ6EP6TWMBHYTV3TGIAVE4J227/action/timestamp_anchor","attest_storage":"https://pith.science/pith/GZ6EP6TWMBHYTV3TGIAVE4J227/action/storage_attestation","attest_author":"https://pith.science/pith/GZ6EP6TWMBHYTV3TGIAVE4J227/action/author_attestation","sign_citation":"https://pith.science/pith/GZ6EP6TWMBHYTV3TGIAVE4J227/action/citation_signature","submit_replication":"https://pith.science/pith/GZ6EP6TWMBHYTV3TGIAVE4J227/action/replication_record"}},"created_at":"2026-07-05T06:56:34.644469+00:00","updated_at":"2026-07-05T06:56:34.644469+00:00"}