{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:HSWKUGSVVU7NW7M5HCO7B7ACE6","short_pith_number":"pith:HSWKUGSV","canonical_record":{"source":{"id":"1811.01868","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2018-11-05T17:35:00Z","cross_cats_sorted":[],"title_canon_sha256":"9a43ea582c013c5931e4961556920ea73805adbf4ad818a6a5edcdf1e3c204d7","abstract_canon_sha256":"f7c65625108988939d9cbf597a53b03bc8d390a048bf0c4165c7d54db31bfd8d"},"schema_version":"1.0"},"canonical_sha256":"3cacaa1a55ad3edb7d9d389df0fc02278a9a5a1b7a1a337ba5cd418fd87ad84d","source":{"kind":"arxiv","id":"1811.01868","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.01868","created_at":"2026-05-18T00:01:33Z"},{"alias_kind":"arxiv_version","alias_value":"1811.01868v1","created_at":"2026-05-18T00:01:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.01868","created_at":"2026-05-18T00:01:33Z"},{"alias_kind":"pith_short_12","alias_value":"HSWKUGSVVU7N","created_at":"2026-05-18T12:32:28Z"},{"alias_kind":"pith_short_16","alias_value":"HSWKUGSVVU7NW7M5","created_at":"2026-05-18T12:32:28Z"},{"alias_kind":"pith_short_8","alias_value":"HSWKUGSV","created_at":"2026-05-18T12:32:28Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:HSWKUGSVVU7NW7M5HCO7B7ACE6","target":"record","payload":{"canonical_record":{"source":{"id":"1811.01868","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2018-11-05T17:35:00Z","cross_cats_sorted":[],"title_canon_sha256":"9a43ea582c013c5931e4961556920ea73805adbf4ad818a6a5edcdf1e3c204d7","abstract_canon_sha256":"f7c65625108988939d9cbf597a53b03bc8d390a048bf0c4165c7d54db31bfd8d"},"schema_version":"1.0"},"canonical_sha256":"3cacaa1a55ad3edb7d9d389df0fc02278a9a5a1b7a1a337ba5cd418fd87ad84d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:01:33.045186Z","signature_b64":"SaK4M/RFrTWWnyZcfYuUozfIeFqp6rcm/ADGBnmFDMrjXC7URaEFH3bpauG7AN+Msz2ksWP7OtDX0MwyDqOuBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3cacaa1a55ad3edb7d9d389df0fc02278a9a5a1b7a1a337ba5cd418fd87ad84d","last_reissued_at":"2026-05-18T00:01:33.044682Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:01:33.044682Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1811.01868","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":"2026-05-18T00:01:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5UZusfQkOIlDzamgSvN3ShoMjgERx9qWyA4Bh87xD4RLPcGQjZ4gX11Ezy1vgzxkFRaxqSsISAWsLtylH6EMDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T08:30:18.916193Z"},"content_sha256":"cae86861920c337bd026ddb8c444e3262eccfd78f3bc2bce186dc0eaf08169c6","schema_version":"1.0","event_id":"sha256:cae86861920c337bd026ddb8c444e3262eccfd78f3bc2bce186dc0eaf08169c6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:HSWKUGSVVU7NW7M5HCO7B7ACE6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"First Commissioning Results of the Multicusp Ion Source at MIT (MIST-1) for H$_2^+$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.acc-ph","authors_text":"Aashish Tripathee, Daniel Winklehner, Frances Hartwell, Janet Conrad, Jesus Corona, Joseph Smolsky, Loyd Waites, Maria Yampolskaya, Patrick Bedard, Philip Weigel, Spencer Axani, Thomas Wester","submitted_at":"2018-11-05T17:35:00Z","abstract_excerpt":"IsoDAR is an experiment under development to search for sterile neutrinos using the isotope Decay-At-Rest (DAR) production mechanism, where protons impinging on $^9$Be create neutrons which capture on $^7$Li which then beta-decays producing $\\bar{\\nu}_e$. As this will be an isotropic source of $\\bar{\\nu}_e$, the primary driver current must be large (10 mA cw) for IsoDAR to have sufficient statistics to be conclusive within 5 years of running. H$_2^+$ was chosen as primary ion to overcome some of the space-charge limitations during low energy beam transport and injection into a compact cyclotro"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.01868","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":"2026-05-18T00:01:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ztzK+pe8M1tyS4+QCbM94VRiveXipZEWMISkW95I21r+LFkyfI8f0Y79VFZKFkW878rHgbdJSoyyqvl+iPtaBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T08:30:18.916567Z"},"content_sha256":"0a796324730e69b3585c1ed4ae1a5eeb29910b6892438ec2d30197bea614f697","schema_version":"1.0","event_id":"sha256:0a796324730e69b3585c1ed4ae1a5eeb29910b6892438ec2d30197bea614f697"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HSWKUGSVVU7NW7M5HCO7B7ACE6/bundle.json","state_url":"https://pith.science/pith/HSWKUGSVVU7NW7M5HCO7B7ACE6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HSWKUGSVVU7NW7M5HCO7B7ACE6/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":"2026-06-01T08:30:18Z","links":{"resolver":"https://pith.science/pith/HSWKUGSVVU7NW7M5HCO7B7ACE6","bundle":"https://pith.science/pith/HSWKUGSVVU7NW7M5HCO7B7ACE6/bundle.json","state":"https://pith.science/pith/HSWKUGSVVU7NW7M5HCO7B7ACE6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HSWKUGSVVU7NW7M5HCO7B7ACE6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:HSWKUGSVVU7NW7M5HCO7B7ACE6","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":"f7c65625108988939d9cbf597a53b03bc8d390a048bf0c4165c7d54db31bfd8d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2018-11-05T17:35:00Z","title_canon_sha256":"9a43ea582c013c5931e4961556920ea73805adbf4ad818a6a5edcdf1e3c204d7"},"schema_version":"1.0","source":{"id":"1811.01868","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.01868","created_at":"2026-05-18T00:01:33Z"},{"alias_kind":"arxiv_version","alias_value":"1811.01868v1","created_at":"2026-05-18T00:01:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.01868","created_at":"2026-05-18T00:01:33Z"},{"alias_kind":"pith_short_12","alias_value":"HSWKUGSVVU7N","created_at":"2026-05-18T12:32:28Z"},{"alias_kind":"pith_short_16","alias_value":"HSWKUGSVVU7NW7M5","created_at":"2026-05-18T12:32:28Z"},{"alias_kind":"pith_short_8","alias_value":"HSWKUGSV","created_at":"2026-05-18T12:32:28Z"}],"graph_snapshots":[{"event_id":"sha256:0a796324730e69b3585c1ed4ae1a5eeb29910b6892438ec2d30197bea614f697","target":"graph","created_at":"2026-05-18T00:01:33Z","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":"IsoDAR is an experiment under development to search for sterile neutrinos using the isotope Decay-At-Rest (DAR) production mechanism, where protons impinging on $^9$Be create neutrons which capture on $^7$Li which then beta-decays producing $\\bar{\\nu}_e$. As this will be an isotropic source of $\\bar{\\nu}_e$, the primary driver current must be large (10 mA cw) for IsoDAR to have sufficient statistics to be conclusive within 5 years of running. H$_2^+$ was chosen as primary ion to overcome some of the space-charge limitations during low energy beam transport and injection into a compact cyclotro","authors_text":"Aashish Tripathee, Daniel Winklehner, Frances Hartwell, Janet Conrad, Jesus Corona, Joseph Smolsky, Loyd Waites, Maria Yampolskaya, Patrick Bedard, Philip Weigel, Spencer Axani, Thomas Wester","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2018-11-05T17:35:00Z","title":"First Commissioning Results of the Multicusp Ion Source at MIT (MIST-1) for H$_2^+$"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.01868","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:cae86861920c337bd026ddb8c444e3262eccfd78f3bc2bce186dc0eaf08169c6","target":"record","created_at":"2026-05-18T00:01:33Z","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":"f7c65625108988939d9cbf597a53b03bc8d390a048bf0c4165c7d54db31bfd8d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2018-11-05T17:35:00Z","title_canon_sha256":"9a43ea582c013c5931e4961556920ea73805adbf4ad818a6a5edcdf1e3c204d7"},"schema_version":"1.0","source":{"id":"1811.01868","kind":"arxiv","version":1}},"canonical_sha256":"3cacaa1a55ad3edb7d9d389df0fc02278a9a5a1b7a1a337ba5cd418fd87ad84d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3cacaa1a55ad3edb7d9d389df0fc02278a9a5a1b7a1a337ba5cd418fd87ad84d","first_computed_at":"2026-05-18T00:01:33.044682Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:01:33.044682Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"SaK4M/RFrTWWnyZcfYuUozfIeFqp6rcm/ADGBnmFDMrjXC7URaEFH3bpauG7AN+Msz2ksWP7OtDX0MwyDqOuBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:01:33.045186Z","signed_message":"canonical_sha256_bytes"},"source_id":"1811.01868","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cae86861920c337bd026ddb8c444e3262eccfd78f3bc2bce186dc0eaf08169c6","sha256:0a796324730e69b3585c1ed4ae1a5eeb29910b6892438ec2d30197bea614f697"],"state_sha256":"7ebb4efc040437b111107dd2d73202c55f6b4fb3f74239f6b8957a56e4142606"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3MpCCehfw5MMlAM/Oir08XEC1tc4MO1jA3Ny/grihgOKCdz7apWoiQ3ihnrszVJo5AQsZaW0DRYc3TYEK/G1Dg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T08:30:18.918597Z","bundle_sha256":"004e237f24b60b3fcf989982cc88a8bb843ba8c17abfb634b039e8c8a33b2d23"}}