{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:2PYKIOBIMMXP7HHELY47USVSVK","short_pith_number":"pith:2PYKIOBI","canonical_record":{"source":{"id":"1502.02073","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"physics.acc-ph","submitted_at":"2015-02-06T23:13:58Z","cross_cats_sorted":[],"title_canon_sha256":"f9b21b31f385038113250a9f5ba00f7157874c711721836d7234083e0ff9f534","abstract_canon_sha256":"0bda4c896df1f8de256f163e0bcf7c66812cdee82bb3257c4f3ddc9f0582652a"},"schema_version":"1.0"},"canonical_sha256":"d3f0a43828632eff9ce45e39fa4ab2aaa6bcc410bb823ea96732f8c7448b8bdf","source":{"kind":"arxiv","id":"1502.02073","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1502.02073","created_at":"2026-05-18T02:27:50Z"},{"alias_kind":"arxiv_version","alias_value":"1502.02073v1","created_at":"2026-05-18T02:27:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1502.02073","created_at":"2026-05-18T02:27:50Z"},{"alias_kind":"pith_short_12","alias_value":"2PYKIOBIMMXP","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_16","alias_value":"2PYKIOBIMMXP7HHE","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_8","alias_value":"2PYKIOBI","created_at":"2026-05-18T12:29:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:2PYKIOBIMMXP7HHELY47USVSVK","target":"record","payload":{"canonical_record":{"source":{"id":"1502.02073","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"physics.acc-ph","submitted_at":"2015-02-06T23:13:58Z","cross_cats_sorted":[],"title_canon_sha256":"f9b21b31f385038113250a9f5ba00f7157874c711721836d7234083e0ff9f534","abstract_canon_sha256":"0bda4c896df1f8de256f163e0bcf7c66812cdee82bb3257c4f3ddc9f0582652a"},"schema_version":"1.0"},"canonical_sha256":"d3f0a43828632eff9ce45e39fa4ab2aaa6bcc410bb823ea96732f8c7448b8bdf","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:27:50.022610Z","signature_b64":"p1x7e4hGmc+DKO+h3WbfMeoPmh+Yv1bMfGgC+sF5tu26R54Yr+i2PYslrE4ohT+v2YRnmAiZubCsE0u6Y/PpAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d3f0a43828632eff9ce45e39fa4ab2aaa6bcc410bb823ea96732f8c7448b8bdf","last_reissued_at":"2026-05-18T02:27:50.022231Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:27:50.022231Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1502.02073","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":"2026-05-18T02:27:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dpeu4muo/QuHIE/zTf72FZMjm4ZT3qKESapgQGv6CCINgLv2riHa+GVTlDlKqUSv/XXUWyRC9UatXArp7ni9CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-09T06:54:44.495060Z"},"content_sha256":"82978a67909789a9296129daff7cb3960cde5d1a092d539e858d1e224d0ae795","schema_version":"1.0","event_id":"sha256:82978a67909789a9296129daff7cb3960cde5d1a092d539e858d1e224d0ae795"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:2PYKIOBIMMXP7HHELY47USVSVK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Feasibility study of channeling acceleration experiment at the Fermilab ASTA facility","license":"http://creativecommons.org/licenses/by/3.0/","headline":"","cross_cats":[],"primary_cat":"physics.acc-ph","authors_text":"Fermilab) Tao Xu (Northern Illinois U.) Dean A. Still, Vladimir Shiltsev (Fermilab), Young-Min Shin (Northern Illinois U.","submitted_at":"2015-02-06T23:13:58Z","abstract_excerpt":"Crystal channeling technology has offered various opportunities in accelerator community with a viability of ultrahigh gradient (TV/m) acceleration for future HEP collider in Energy Frontier. The major challenge of the channeling acceleration is that ultimate acceleration gradients might require high power driver at hard x-ray regime (~ 40 keV), exceeding those conceivable for x-rays as of today, though x-ray lasers can efficiently excite solid plasma and accelerate particles inside a crystal channel. Moreover, only disposable crystal accelerators are possible at such high externally excited f"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1502.02073","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":"2026-05-18T02:27:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Zq5fdwWmGUsXibC6uzKDhsdgeKzw/DwXmkYle1fCZjpOm+95ChzpRaHzfIcB8p+SwzSgFmKJH+PdirVKOC0PAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-09T06:54:44.495662Z"},"content_sha256":"d554bc18157aa50c5796121f2a09cb5e1e59979fcf8b44f19057dba1db61672c","schema_version":"1.0","event_id":"sha256:d554bc18157aa50c5796121f2a09cb5e1e59979fcf8b44f19057dba1db61672c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2PYKIOBIMMXP7HHELY47USVSVK/bundle.json","state_url":"https://pith.science/pith/2PYKIOBIMMXP7HHELY47USVSVK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2PYKIOBIMMXP7HHELY47USVSVK/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":"2026-07-09T06:54:44Z","links":{"resolver":"https://pith.science/pith/2PYKIOBIMMXP7HHELY47USVSVK","bundle":"https://pith.science/pith/2PYKIOBIMMXP7HHELY47USVSVK/bundle.json","state":"https://pith.science/pith/2PYKIOBIMMXP7HHELY47USVSVK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2PYKIOBIMMXP7HHELY47USVSVK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:2PYKIOBIMMXP7HHELY47USVSVK","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":"0bda4c896df1f8de256f163e0bcf7c66812cdee82bb3257c4f3ddc9f0582652a","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"physics.acc-ph","submitted_at":"2015-02-06T23:13:58Z","title_canon_sha256":"f9b21b31f385038113250a9f5ba00f7157874c711721836d7234083e0ff9f534"},"schema_version":"1.0","source":{"id":"1502.02073","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1502.02073","created_at":"2026-05-18T02:27:50Z"},{"alias_kind":"arxiv_version","alias_value":"1502.02073v1","created_at":"2026-05-18T02:27:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1502.02073","created_at":"2026-05-18T02:27:50Z"},{"alias_kind":"pith_short_12","alias_value":"2PYKIOBIMMXP","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_16","alias_value":"2PYKIOBIMMXP7HHE","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_8","alias_value":"2PYKIOBI","created_at":"2026-05-18T12:29:02Z"}],"graph_snapshots":[{"event_id":"sha256:d554bc18157aa50c5796121f2a09cb5e1e59979fcf8b44f19057dba1db61672c","target":"graph","created_at":"2026-05-18T02:27:50Z","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":"Crystal channeling technology has offered various opportunities in accelerator community with a viability of ultrahigh gradient (TV/m) acceleration for future HEP collider in Energy Frontier. The major challenge of the channeling acceleration is that ultimate acceleration gradients might require high power driver at hard x-ray regime (~ 40 keV), exceeding those conceivable for x-rays as of today, though x-ray lasers can efficiently excite solid plasma and accelerate particles inside a crystal channel. Moreover, only disposable crystal accelerators are possible at such high externally excited f","authors_text":"Fermilab) Tao Xu (Northern Illinois U.) Dean A. Still, Vladimir Shiltsev (Fermilab), Young-Min Shin (Northern Illinois U.","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"physics.acc-ph","submitted_at":"2015-02-06T23:13:58Z","title":"Feasibility study of channeling acceleration experiment at the Fermilab ASTA facility"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1502.02073","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":"sha256:82978a67909789a9296129daff7cb3960cde5d1a092d539e858d1e224d0ae795","target":"record","created_at":"2026-05-18T02:27:50Z","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":"0bda4c896df1f8de256f163e0bcf7c66812cdee82bb3257c4f3ddc9f0582652a","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"physics.acc-ph","submitted_at":"2015-02-06T23:13:58Z","title_canon_sha256":"f9b21b31f385038113250a9f5ba00f7157874c711721836d7234083e0ff9f534"},"schema_version":"1.0","source":{"id":"1502.02073","kind":"arxiv","version":1}},"canonical_sha256":"d3f0a43828632eff9ce45e39fa4ab2aaa6bcc410bb823ea96732f8c7448b8bdf","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d3f0a43828632eff9ce45e39fa4ab2aaa6bcc410bb823ea96732f8c7448b8bdf","first_computed_at":"2026-05-18T02:27:50.022231Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:27:50.022231Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"p1x7e4hGmc+DKO+h3WbfMeoPmh+Yv1bMfGgC+sF5tu26R54Yr+i2PYslrE4ohT+v2YRnmAiZubCsE0u6Y/PpAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:27:50.022610Z","signed_message":"canonical_sha256_bytes"},"source_id":"1502.02073","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:82978a67909789a9296129daff7cb3960cde5d1a092d539e858d1e224d0ae795","sha256:d554bc18157aa50c5796121f2a09cb5e1e59979fcf8b44f19057dba1db61672c"],"state_sha256":"75d64e1df45da8c7587652565745dd2126063c74e209393d831ba7220e37b315"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pSM1vCElK5C7LUmk7D7pTBUQdGgD559QPk951Sk2a+DxIbflKxyCqk/3Wuxg/Dr487AAPKTzh87Z4aEWjYZeAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-09T06:54:44.498801Z","bundle_sha256":"137cf7208c7483ff62c283db534d70d8cad7a1ea4a02e30d0a36603df00ff9ea"}}