{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:3UJWZM2JFT5E73UYNM2B2OZZOY","short_pith_number":"pith:3UJWZM2J","canonical_record":{"source":{"id":"1907.08562","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2019-07-19T16:29:41Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"4eac832ae101dc4740734759c07657056d20207035ae315aa2ad4f9464634f03","abstract_canon_sha256":"2f98ba5a69b95190e5bac65650283a15488f2d78bcd2237c86dd438920af37da"},"schema_version":"1.0"},"canonical_sha256":"dd136cb3492cfa4fee986b341d3b3976280f527ba90299f983726ecf9f5b07e4","source":{"kind":"arxiv","id":"1907.08562","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.08562","created_at":"2026-05-17T23:40:09Z"},{"alias_kind":"arxiv_version","alias_value":"1907.08562v1","created_at":"2026-05-17T23:40:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.08562","created_at":"2026-05-17T23:40:09Z"},{"alias_kind":"pith_short_12","alias_value":"3UJWZM2JFT5E","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_16","alias_value":"3UJWZM2JFT5E73UY","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_8","alias_value":"3UJWZM2J","created_at":"2026-05-18T12:33:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:3UJWZM2JFT5E73UYNM2B2OZZOY","target":"record","payload":{"canonical_record":{"source":{"id":"1907.08562","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2019-07-19T16:29:41Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"4eac832ae101dc4740734759c07657056d20207035ae315aa2ad4f9464634f03","abstract_canon_sha256":"2f98ba5a69b95190e5bac65650283a15488f2d78bcd2237c86dd438920af37da"},"schema_version":"1.0"},"canonical_sha256":"dd136cb3492cfa4fee986b341d3b3976280f527ba90299f983726ecf9f5b07e4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:40:09.431306Z","signature_b64":"O9Io2UiG7HRpP+bI6/V4jJQxVeWGJss4Suhu0SpQZtPB7S+lPzr9vzynuL3hrMfeBFE44LRXfz/tdinyFc6+Bg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"dd136cb3492cfa4fee986b341d3b3976280f527ba90299f983726ecf9f5b07e4","last_reissued_at":"2026-05-17T23:40:09.430794Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:40:09.430794Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1907.08562","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":"2026-05-17T23:40:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5Jla04gDBeJ00IRikH7TuJvuH+b5ffE3JLsc2TqAX139PvPvlbFLpS2fTGzQOJQLngZiUWQaUqpEm2cFdIWdCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T07:08:45.413826Z"},"content_sha256":"5ee266f4cccbaed26ea1246d6ef5ef907e904420b477f01b152fc8272ffc366e","schema_version":"1.0","event_id":"sha256:5ee266f4cccbaed26ea1246d6ef5ef907e904420b477f01b152fc8272ffc366e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:3UJWZM2JFT5E73UYNM2B2OZZOY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"First demonstration of ionization cooling by the Muon Ionization Cooling Experiment","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"physics.acc-ph","authors_text":"A. Blondel, A. D. Bross, A. De Bari, A. DeMello, A. Dobbs, A. Gallagher, A. Grant, A. J. Dick, A. Kurup, A. Lambert, A. Liu, A. Moss, A. Muir, A. Nichols, A. Oates, A. R. Young, A. Sato, A. Wilson, B. Freemire, B. Martlew, C. Brown, C. G. Whyte, C. Heidt, C. Hunt, C. K. Sung, C. MacWaters, C. N. Booth, C. Pidcott, C. Rogers, C. White, D. Adams, D. Adey, D. A. Sanders, D. Bowring, D. Colling, D. Jokovic, D. J. Summers, D. Li, D. Maletic, D. M. Kaplan, D. Neuffer, D. Orestano, E. Overton, F. Chignoli, F. Drielsma, F. Filthaut, F. J. P. Soler, G. Charnley, G. G. Hanson, G. Stokes, G. T. Chatzitheodoridis, G. Vankova-Kirilova, H. Sakamoto, H. Witte, I. Mullacrane, I. Taylor, J.-B. Lagrange, J. Boehm, J. C. Nugent, J. Govans, J. H. Cobb, J. J. Nebrensky, J. Langlands, J. Martyniak, J. Nikolov, J. Pasternak, J. R. Greis, J. Tarrant, J. Y. Tang, K. Dumbell, K. Long, K. Ronald, L. M. Cremaldi, L. R. Coney, L. Tortora, M. A. Uchida, M. Bogomilov, M. Bonesini, M. Chung, M. Courthold, M. Ellis, M. Hills, M. Palmer, M. Popovic, M. Savic, M. Tucker, M. Vretenar, N. Collomb, N. Jovancevic, P. B. Jurj, P. Cooke, P. Dornan, P. Franchini, P. Hanlet, P. Hodgson, P. J. Smith, P. Kyberd, P. Owens, P. Rubinov, P. Snopok, P. Warburton, R. Asfandiyarov, R. Bayes, R. Bertoni, R.B.S. Gardener, R. Gamet, R. Mazza, R. Preece, R. Tsenov, S. Boyd, S. Gourlay, S. Griffiths, S. Ishimoto, S. Middleton, S. Prestemon, S. Ramberger, S. Ricciardi, S. Virostek, S. Watson, S. Wilbur, T. A. Mohayai, T. Hartnett, T. Lord, T. Luo, T. Stanley, T. W. Bradshaw, V. Bayliss, V. J. Blackmore, V. Palladino, V. Pec, Y. Karadzhov, Y. Kuno, Y. P. Song, Y. Torun, Z. H. Li","submitted_at":"2019-07-19T16:29:41Z","abstract_excerpt":"High-brightness muon beams of energy comparable to those produced by state-of-the-art electron, proton and ion accelerators have yet to be realised. Such beams have the potential to carry the search for new phenomena in lepton-antilepton collisions to extremely high energy and also to provide uniquely well-characterised neutrino beams. A muon beam may be created through the decay of pions produced in the interaction of a proton beam with a target. To produce a high-brightness beam from such a source requires that the phase space volume occupied by the muons be reduced (cooled). Ionization cool"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.08562","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":"2026-05-17T23:40:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SEVrm+gOVxZcIlKHUfoA4BhOAEiRnAsJsG1RNtvEdQqE/CXIPA/xfiYafSo4xhYQMjKpmp0hS/0jRPorqSwFBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T07:08:45.414197Z"},"content_sha256":"a28ded232a10fbcbb5d233180db0e9f5b608762007df4c8d5b18a97a5b8a3860","schema_version":"1.0","event_id":"sha256:a28ded232a10fbcbb5d233180db0e9f5b608762007df4c8d5b18a97a5b8a3860"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3UJWZM2JFT5E73UYNM2B2OZZOY/bundle.json","state_url":"https://pith.science/pith/3UJWZM2JFT5E73UYNM2B2OZZOY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3UJWZM2JFT5E73UYNM2B2OZZOY/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":"2026-06-02T07:08:45Z","links":{"resolver":"https://pith.science/pith/3UJWZM2JFT5E73UYNM2B2OZZOY","bundle":"https://pith.science/pith/3UJWZM2JFT5E73UYNM2B2OZZOY/bundle.json","state":"https://pith.science/pith/3UJWZM2JFT5E73UYNM2B2OZZOY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3UJWZM2JFT5E73UYNM2B2OZZOY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:3UJWZM2JFT5E73UYNM2B2OZZOY","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":"2f98ba5a69b95190e5bac65650283a15488f2d78bcd2237c86dd438920af37da","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2019-07-19T16:29:41Z","title_canon_sha256":"4eac832ae101dc4740734759c07657056d20207035ae315aa2ad4f9464634f03"},"schema_version":"1.0","source":{"id":"1907.08562","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.08562","created_at":"2026-05-17T23:40:09Z"},{"alias_kind":"arxiv_version","alias_value":"1907.08562v1","created_at":"2026-05-17T23:40:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.08562","created_at":"2026-05-17T23:40:09Z"},{"alias_kind":"pith_short_12","alias_value":"3UJWZM2JFT5E","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_16","alias_value":"3UJWZM2JFT5E73UY","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_8","alias_value":"3UJWZM2J","created_at":"2026-05-18T12:33:10Z"}],"graph_snapshots":[{"event_id":"sha256:a28ded232a10fbcbb5d233180db0e9f5b608762007df4c8d5b18a97a5b8a3860","target":"graph","created_at":"2026-05-17T23:40:09Z","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":"High-brightness muon beams of energy comparable to those produced by state-of-the-art electron, proton and ion accelerators have yet to be realised. Such beams have the potential to carry the search for new phenomena in lepton-antilepton collisions to extremely high energy and also to provide uniquely well-characterised neutrino beams. A muon beam may be created through the decay of pions produced in the interaction of a proton beam with a target. To produce a high-brightness beam from such a source requires that the phase space volume occupied by the muons be reduced (cooled). Ionization cool","authors_text":"A. Blondel, A. D. Bross, A. De Bari, A. DeMello, A. Dobbs, A. Gallagher, A. Grant, A. J. Dick, A. Kurup, A. Lambert, A. Liu, A. Moss, A. Muir, A. Nichols, A. Oates, A. R. Young, A. Sato, A. Wilson, B. Freemire, B. Martlew, C. Brown, C. G. Whyte, C. Heidt, C. Hunt, C. K. Sung, C. MacWaters, C. N. Booth, C. Pidcott, C. Rogers, C. White, D. Adams, D. Adey, D. A. Sanders, D. Bowring, D. Colling, D. Jokovic, D. J. Summers, D. Li, D. Maletic, D. M. Kaplan, D. Neuffer, D. Orestano, E. Overton, F. Chignoli, F. Drielsma, F. Filthaut, F. J. P. Soler, G. Charnley, G. G. Hanson, G. Stokes, G. T. Chatzitheodoridis, G. Vankova-Kirilova, H. Sakamoto, H. Witte, I. Mullacrane, I. Taylor, J.-B. Lagrange, J. Boehm, J. C. Nugent, J. Govans, J. H. Cobb, J. J. Nebrensky, J. Langlands, J. Martyniak, J. Nikolov, J. Pasternak, J. R. Greis, J. Tarrant, J. Y. Tang, K. Dumbell, K. Long, K. Ronald, L. M. Cremaldi, L. R. Coney, L. Tortora, M. A. Uchida, M. Bogomilov, M. Bonesini, M. Chung, M. Courthold, M. Ellis, M. Hills, M. Palmer, M. Popovic, M. Savic, M. Tucker, M. Vretenar, N. Collomb, N. Jovancevic, P. B. Jurj, P. Cooke, P. Dornan, P. Franchini, P. Hanlet, P. Hodgson, P. J. Smith, P. Kyberd, P. Owens, P. Rubinov, P. Snopok, P. Warburton, R. Asfandiyarov, R. Bayes, R. Bertoni, R.B.S. Gardener, R. Gamet, R. Mazza, R. Preece, R. Tsenov, S. Boyd, S. Gourlay, S. Griffiths, S. Ishimoto, S. Middleton, S. Prestemon, S. Ramberger, S. Ricciardi, S. Virostek, S. Watson, S. Wilbur, T. A. Mohayai, T. Hartnett, T. Lord, T. Luo, T. Stanley, T. W. Bradshaw, V. Bayliss, V. J. Blackmore, V. Palladino, V. Pec, Y. Karadzhov, Y. Kuno, Y. P. Song, Y. Torun, Z. H. Li","cross_cats":["hep-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2019-07-19T16:29:41Z","title":"First demonstration of ionization cooling by the Muon Ionization Cooling Experiment"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.08562","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":"sha256:5ee266f4cccbaed26ea1246d6ef5ef907e904420b477f01b152fc8272ffc366e","target":"record","created_at":"2026-05-17T23:40:09Z","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":"2f98ba5a69b95190e5bac65650283a15488f2d78bcd2237c86dd438920af37da","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2019-07-19T16:29:41Z","title_canon_sha256":"4eac832ae101dc4740734759c07657056d20207035ae315aa2ad4f9464634f03"},"schema_version":"1.0","source":{"id":"1907.08562","kind":"arxiv","version":1}},"canonical_sha256":"dd136cb3492cfa4fee986b341d3b3976280f527ba90299f983726ecf9f5b07e4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"dd136cb3492cfa4fee986b341d3b3976280f527ba90299f983726ecf9f5b07e4","first_computed_at":"2026-05-17T23:40:09.430794Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:40:09.430794Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"O9Io2UiG7HRpP+bI6/V4jJQxVeWGJss4Suhu0SpQZtPB7S+lPzr9vzynuL3hrMfeBFE44LRXfz/tdinyFc6+Bg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:40:09.431306Z","signed_message":"canonical_sha256_bytes"},"source_id":"1907.08562","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5ee266f4cccbaed26ea1246d6ef5ef907e904420b477f01b152fc8272ffc366e","sha256:a28ded232a10fbcbb5d233180db0e9f5b608762007df4c8d5b18a97a5b8a3860"],"state_sha256":"442c6eed573e380374b8eeff2e12522be5448ce73b9501a29d5ce4af98caafd9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GskpmabO5aPJnmlTZSomh6xAewzNxS1+FWpu67qVa4VaSZAv3OXbFywHRJ0j/OYqPaXfXW3ucwyZq2RGN5b7Cg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T07:08:45.416234Z","bundle_sha256":"a18404272989347c94bc6653964044ad740da35d02e146ac39955b3999c2d746"}}