{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:ZPG5DCXUNAXFATPNX44AKLAQBR","short_pith_number":"pith:ZPG5DCXU","canonical_record":{"source":{"id":"1206.0573","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2012-06-04T10:15:01Z","cross_cats_sorted":[],"title_canon_sha256":"1255e91ab35e2eaf26869178034f298d5a15e226109500446c9597c6c45d741f","abstract_canon_sha256":"2701df7ef34c6dc5497b4d35c31275cf9637543975ca06856eb9edf8b3efecbd"},"schema_version":"1.0"},"canonical_sha256":"cbcdd18af4682e504dedbf38052c100c78196229b442ca9e31caa770b30bf1ff","source":{"kind":"arxiv","id":"1206.0573","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1206.0573","created_at":"2026-05-18T03:54:17Z"},{"alias_kind":"arxiv_version","alias_value":"1206.0573v1","created_at":"2026-05-18T03:54:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1206.0573","created_at":"2026-05-18T03:54:17Z"},{"alias_kind":"pith_short_12","alias_value":"ZPG5DCXUNAXF","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_16","alias_value":"ZPG5DCXUNAXFATPN","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_8","alias_value":"ZPG5DCXU","created_at":"2026-05-18T12:27:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:ZPG5DCXUNAXFATPNX44AKLAQBR","target":"record","payload":{"canonical_record":{"source":{"id":"1206.0573","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2012-06-04T10:15:01Z","cross_cats_sorted":[],"title_canon_sha256":"1255e91ab35e2eaf26869178034f298d5a15e226109500446c9597c6c45d741f","abstract_canon_sha256":"2701df7ef34c6dc5497b4d35c31275cf9637543975ca06856eb9edf8b3efecbd"},"schema_version":"1.0"},"canonical_sha256":"cbcdd18af4682e504dedbf38052c100c78196229b442ca9e31caa770b30bf1ff","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:54:17.256667Z","signature_b64":"ZrE6ZXZWPGap1/pXpfOv6czpsbCXyhTXhnCvJJp66IgwkFMMuSLttJFnI585F/wtSGgcHs01JRFNe8P/zWaYCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cbcdd18af4682e504dedbf38052c100c78196229b442ca9e31caa770b30bf1ff","last_reissued_at":"2026-05-18T03:54:17.255796Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:54:17.255796Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1206.0573","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":"2026-05-18T03:54:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iGaMNcpy1IFw+v1jIOoeJRGxNdtTDN1EzdYKYOIUZ0LwywoHDpJ4hT+CejXhCiMINL/62F6so0+duetcTVlxCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T10:34:52.158171Z"},"content_sha256":"b2ef59e0701feff145897a2fb729d99c71073a714e4a8bfa4e1568c4b76abf8a","schema_version":"1.0","event_id":"sha256:b2ef59e0701feff145897a2fb729d99c71073a714e4a8bfa4e1568c4b76abf8a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:ZPG5DCXUNAXFATPNX44AKLAQBR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Measurement of the dynamic response of the CERN DC spark system and preliminary estimates of the breakdown turn-on time","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.acc-ph","authors_text":"Nicholas Shipman, Roger M. Jones, Sergio Calatroni, Walter Wuensch","submitted_at":"2012-06-04T10:15:01Z","abstract_excerpt":"The new High Repetition Rate (HRR) CERN DC Spark System has been used to investigate the current and voltage time structure of a breakdown. Simulations indicate that vacuum breakdowns develop on ns timescales or even less. An experimental benchmark for this timescale is critical for comparison to simulations. The fast rise time of breakdown may provide some explanation of the particularly high gradients achieved by low group velocity, and narrow bandwidth, accelerating structures such as the T18 and T24. Voltage and current measurements made with the previous system indicated that the transien"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1206.0573","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":"2026-05-18T03:54:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Gzn5sij/sfcsJwPp09Uv7Lw42IajRBe/7orKeiXL5I9C2p3iW/MYuTODcWs/6LS0NplOC+w5bGf9rLFDmtXVCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T10:34:52.158894Z"},"content_sha256":"e0ee6a0f362da391ca0c82383d17c27f7d0d29e74f78df9cbb3bcad4160fac6e","schema_version":"1.0","event_id":"sha256:e0ee6a0f362da391ca0c82383d17c27f7d0d29e74f78df9cbb3bcad4160fac6e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZPG5DCXUNAXFATPNX44AKLAQBR/bundle.json","state_url":"https://pith.science/pith/ZPG5DCXUNAXFATPNX44AKLAQBR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZPG5DCXUNAXFATPNX44AKLAQBR/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":"2026-06-08T10:34:52Z","links":{"resolver":"https://pith.science/pith/ZPG5DCXUNAXFATPNX44AKLAQBR","bundle":"https://pith.science/pith/ZPG5DCXUNAXFATPNX44AKLAQBR/bundle.json","state":"https://pith.science/pith/ZPG5DCXUNAXFATPNX44AKLAQBR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZPG5DCXUNAXFATPNX44AKLAQBR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:ZPG5DCXUNAXFATPNX44AKLAQBR","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":"2701df7ef34c6dc5497b4d35c31275cf9637543975ca06856eb9edf8b3efecbd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2012-06-04T10:15:01Z","title_canon_sha256":"1255e91ab35e2eaf26869178034f298d5a15e226109500446c9597c6c45d741f"},"schema_version":"1.0","source":{"id":"1206.0573","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1206.0573","created_at":"2026-05-18T03:54:17Z"},{"alias_kind":"arxiv_version","alias_value":"1206.0573v1","created_at":"2026-05-18T03:54:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1206.0573","created_at":"2026-05-18T03:54:17Z"},{"alias_kind":"pith_short_12","alias_value":"ZPG5DCXUNAXF","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_16","alias_value":"ZPG5DCXUNAXFATPN","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_8","alias_value":"ZPG5DCXU","created_at":"2026-05-18T12:27:30Z"}],"graph_snapshots":[{"event_id":"sha256:e0ee6a0f362da391ca0c82383d17c27f7d0d29e74f78df9cbb3bcad4160fac6e","target":"graph","created_at":"2026-05-18T03:54:17Z","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":"The new High Repetition Rate (HRR) CERN DC Spark System has been used to investigate the current and voltage time structure of a breakdown. Simulations indicate that vacuum breakdowns develop on ns timescales or even less. An experimental benchmark for this timescale is critical for comparison to simulations. The fast rise time of breakdown may provide some explanation of the particularly high gradients achieved by low group velocity, and narrow bandwidth, accelerating structures such as the T18 and T24. Voltage and current measurements made with the previous system indicated that the transien","authors_text":"Nicholas Shipman, Roger M. Jones, Sergio Calatroni, Walter Wuensch","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2012-06-04T10:15:01Z","title":"Measurement of the dynamic response of the CERN DC spark system and preliminary estimates of the breakdown turn-on time"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1206.0573","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:b2ef59e0701feff145897a2fb729d99c71073a714e4a8bfa4e1568c4b76abf8a","target":"record","created_at":"2026-05-18T03:54:17Z","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":"2701df7ef34c6dc5497b4d35c31275cf9637543975ca06856eb9edf8b3efecbd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2012-06-04T10:15:01Z","title_canon_sha256":"1255e91ab35e2eaf26869178034f298d5a15e226109500446c9597c6c45d741f"},"schema_version":"1.0","source":{"id":"1206.0573","kind":"arxiv","version":1}},"canonical_sha256":"cbcdd18af4682e504dedbf38052c100c78196229b442ca9e31caa770b30bf1ff","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cbcdd18af4682e504dedbf38052c100c78196229b442ca9e31caa770b30bf1ff","first_computed_at":"2026-05-18T03:54:17.255796Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:54:17.255796Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ZrE6ZXZWPGap1/pXpfOv6czpsbCXyhTXhnCvJJp66IgwkFMMuSLttJFnI585F/wtSGgcHs01JRFNe8P/zWaYCA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:54:17.256667Z","signed_message":"canonical_sha256_bytes"},"source_id":"1206.0573","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b2ef59e0701feff145897a2fb729d99c71073a714e4a8bfa4e1568c4b76abf8a","sha256:e0ee6a0f362da391ca0c82383d17c27f7d0d29e74f78df9cbb3bcad4160fac6e"],"state_sha256":"578607be0f8bf0a7e2c07cd0c808cc3851c02b97be5773ee270585561a70219f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DZS0SgW/ivVQyaUbnJacyoWIDQT/SZrkIEnds65PUjAQAaqrNfARytP861OTyHlJRpEK6qBAFIOO7KxxhRsUBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-08T10:34:52.163415Z","bundle_sha256":"8fea8e5bfa54e4f8ffb2d409311238d42ca65e8761826db6c416b0091292fafe"}}