{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:ZY3SYNLGJBI4KAJPZIAS6TUA63","short_pith_number":"pith:ZY3SYNLG","canonical_record":{"source":{"id":"1511.01467","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.acc-ph","submitted_at":"2015-11-04T20:32:25Z","cross_cats_sorted":[],"title_canon_sha256":"bfd59bd1ac4f2fe8c8291b4342d1c3593effa6dbd5ea16da25a85727fa00dae1","abstract_canon_sha256":"1e1647b378b0024e729e99cc75beaa8e56deb2dce831fb06aa37fcd26b94b3c4"},"schema_version":"1.0"},"canonical_sha256":"ce372c35664851c5012fca012f4e80f6fc5c6ccaf5dd70cd3e56cfccb0c03faa","source":{"kind":"arxiv","id":"1511.01467","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1511.01467","created_at":"2026-05-18T01:27:47Z"},{"alias_kind":"arxiv_version","alias_value":"1511.01467v1","created_at":"2026-05-18T01:27:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1511.01467","created_at":"2026-05-18T01:27:47Z"},{"alias_kind":"pith_short_12","alias_value":"ZY3SYNLGJBI4","created_at":"2026-05-18T12:29:52Z"},{"alias_kind":"pith_short_16","alias_value":"ZY3SYNLGJBI4KAJP","created_at":"2026-05-18T12:29:52Z"},{"alias_kind":"pith_short_8","alias_value":"ZY3SYNLG","created_at":"2026-05-18T12:29:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:ZY3SYNLGJBI4KAJPZIAS6TUA63","target":"record","payload":{"canonical_record":{"source":{"id":"1511.01467","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.acc-ph","submitted_at":"2015-11-04T20:32:25Z","cross_cats_sorted":[],"title_canon_sha256":"bfd59bd1ac4f2fe8c8291b4342d1c3593effa6dbd5ea16da25a85727fa00dae1","abstract_canon_sha256":"1e1647b378b0024e729e99cc75beaa8e56deb2dce831fb06aa37fcd26b94b3c4"},"schema_version":"1.0"},"canonical_sha256":"ce372c35664851c5012fca012f4e80f6fc5c6ccaf5dd70cd3e56cfccb0c03faa","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:27:47.042629Z","signature_b64":"aOwjW78etrLM/yEseWFR+hrH9BX+uvGQDM4IBINfguvpu51HPNjUPAgaZ4/myMHnMsc/RavaWyJ7MTqoiI5ECQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ce372c35664851c5012fca012f4e80f6fc5c6ccaf5dd70cd3e56cfccb0c03faa","last_reissued_at":"2026-05-18T01:27:47.041959Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:27:47.041959Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1511.01467","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":"2026-05-18T01:27:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EaUr2QsFOTCXIdiuD04V74gFyAjJxx42UnTZ2G02BD613Qoo4vzP7CGDKt9x8OaSd3YrLxHWJz4qYhoVXUISAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T20:36:03.417918Z"},"content_sha256":"bd314f278fed88fb44d850fe957a77b9e804e2eea9bcfb522bc6b0fa4ce263d9","schema_version":"1.0","event_id":"sha256:bd314f278fed88fb44d850fe957a77b9e804e2eea9bcfb522bc6b0fa4ce263d9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:ZY3SYNLGJBI4KAJPZIAS6TUA63","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Beam studies for the Proton Improvement Plan (PIP) -- reducing beam loss at the Fermilab Booster","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.acc-ph","authors_text":"C.M. Bhat, C.Y. Tan, D.E. Johnson, K. Seiya, R.J. Tesarek (Fermilab), V.V. Kapin, W.A. Pellico","submitted_at":"2015-11-04T20:32:25Z","abstract_excerpt":"The Fermilab Booster is being upgraded under the Proton Improvement Plan (PIP) to be capable of providing a proton flux of $2.25^{17}$ protons per hour. The intensity per cycle will remain at the present operational $4.3^{12}$ protons per pulse, however the Booster beam cycle rate is going to be increased from 7.5 Hz to 15 Hz. One of the biggest challenges is to maintain the present beam loss power while the doubling the beam flux. Under PIP, there has been a large effort in beam studies and simulations to better understand the mechanisms of the beam loss. The goal is to reduce it by half by c"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.01467","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":"2026-05-18T01:27:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EvlXvUuSiTIcVu1M9k/xUaCXUEGTfUhFBfFcyhXclb7of2MrhcDBfj5QOpepSfGz+xTqlX9GClBdBMtRQ9KtBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T20:36:03.418266Z"},"content_sha256":"253eb7ce71e4df79f4a9b9c79e11b2a830c3cbb829cc5510b34111f252868598","schema_version":"1.0","event_id":"sha256:253eb7ce71e4df79f4a9b9c79e11b2a830c3cbb829cc5510b34111f252868598"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZY3SYNLGJBI4KAJPZIAS6TUA63/bundle.json","state_url":"https://pith.science/pith/ZY3SYNLGJBI4KAJPZIAS6TUA63/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZY3SYNLGJBI4KAJPZIAS6TUA63/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":"2026-05-29T20:36:03Z","links":{"resolver":"https://pith.science/pith/ZY3SYNLGJBI4KAJPZIAS6TUA63","bundle":"https://pith.science/pith/ZY3SYNLGJBI4KAJPZIAS6TUA63/bundle.json","state":"https://pith.science/pith/ZY3SYNLGJBI4KAJPZIAS6TUA63/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZY3SYNLGJBI4KAJPZIAS6TUA63/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:ZY3SYNLGJBI4KAJPZIAS6TUA63","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":"1e1647b378b0024e729e99cc75beaa8e56deb2dce831fb06aa37fcd26b94b3c4","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.acc-ph","submitted_at":"2015-11-04T20:32:25Z","title_canon_sha256":"bfd59bd1ac4f2fe8c8291b4342d1c3593effa6dbd5ea16da25a85727fa00dae1"},"schema_version":"1.0","source":{"id":"1511.01467","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1511.01467","created_at":"2026-05-18T01:27:47Z"},{"alias_kind":"arxiv_version","alias_value":"1511.01467v1","created_at":"2026-05-18T01:27:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1511.01467","created_at":"2026-05-18T01:27:47Z"},{"alias_kind":"pith_short_12","alias_value":"ZY3SYNLGJBI4","created_at":"2026-05-18T12:29:52Z"},{"alias_kind":"pith_short_16","alias_value":"ZY3SYNLGJBI4KAJP","created_at":"2026-05-18T12:29:52Z"},{"alias_kind":"pith_short_8","alias_value":"ZY3SYNLG","created_at":"2026-05-18T12:29:52Z"}],"graph_snapshots":[{"event_id":"sha256:253eb7ce71e4df79f4a9b9c79e11b2a830c3cbb829cc5510b34111f252868598","target":"graph","created_at":"2026-05-18T01:27:47Z","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 Fermilab Booster is being upgraded under the Proton Improvement Plan (PIP) to be capable of providing a proton flux of $2.25^{17}$ protons per hour. The intensity per cycle will remain at the present operational $4.3^{12}$ protons per pulse, however the Booster beam cycle rate is going to be increased from 7.5 Hz to 15 Hz. One of the biggest challenges is to maintain the present beam loss power while the doubling the beam flux. Under PIP, there has been a large effort in beam studies and simulations to better understand the mechanisms of the beam loss. The goal is to reduce it by half by c","authors_text":"C.M. Bhat, C.Y. Tan, D.E. Johnson, K. Seiya, R.J. Tesarek (Fermilab), V.V. Kapin, W.A. Pellico","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.acc-ph","submitted_at":"2015-11-04T20:32:25Z","title":"Beam studies for the Proton Improvement Plan (PIP) -- reducing beam loss at the Fermilab Booster"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.01467","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:bd314f278fed88fb44d850fe957a77b9e804e2eea9bcfb522bc6b0fa4ce263d9","target":"record","created_at":"2026-05-18T01:27:47Z","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":"1e1647b378b0024e729e99cc75beaa8e56deb2dce831fb06aa37fcd26b94b3c4","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.acc-ph","submitted_at":"2015-11-04T20:32:25Z","title_canon_sha256":"bfd59bd1ac4f2fe8c8291b4342d1c3593effa6dbd5ea16da25a85727fa00dae1"},"schema_version":"1.0","source":{"id":"1511.01467","kind":"arxiv","version":1}},"canonical_sha256":"ce372c35664851c5012fca012f4e80f6fc5c6ccaf5dd70cd3e56cfccb0c03faa","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ce372c35664851c5012fca012f4e80f6fc5c6ccaf5dd70cd3e56cfccb0c03faa","first_computed_at":"2026-05-18T01:27:47.041959Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:27:47.041959Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"aOwjW78etrLM/yEseWFR+hrH9BX+uvGQDM4IBINfguvpu51HPNjUPAgaZ4/myMHnMsc/RavaWyJ7MTqoiI5ECQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:27:47.042629Z","signed_message":"canonical_sha256_bytes"},"source_id":"1511.01467","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bd314f278fed88fb44d850fe957a77b9e804e2eea9bcfb522bc6b0fa4ce263d9","sha256:253eb7ce71e4df79f4a9b9c79e11b2a830c3cbb829cc5510b34111f252868598"],"state_sha256":"5da42dfd8bcfa2221e354bbb9e3b7adaf2d4a0a0b31a0be2c6737f8c86a7f2bf"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jLvuQXX/OvzhEAf/mnV6GupPLkT7Qo2KBSopblsK8xN5etsCDnxqoxbfOuq13EBzKDqPdWdjxWmzI3sKCDfrAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-29T20:36:03.420193Z","bundle_sha256":"ad869b1ed4d1ec3db595c260c059789e79038b821f14ac92ceecaeebffa76b84"}}