{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:FU3BHYVOV2YQXJQHPZ5HZO2UBJ","short_pith_number":"pith:FU3BHYVO","canonical_record":{"source":{"id":"1308.0383","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2013-08-02T01:11:04Z","cross_cats_sorted":[],"title_canon_sha256":"c106fc3aca940e373fda7d719e4dc700b12dd83f59393f426d04559b8089a910","abstract_canon_sha256":"0ea0c1820488546091806710fbf86d92d3a9862478536bf7fa988affc6ec47ea"},"schema_version":"1.0"},"canonical_sha256":"2d3613e2aeaeb10ba6077e7a7cbb540a6febadcbaa911f37109d09f1dee6fb70","source":{"kind":"arxiv","id":"1308.0383","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1308.0383","created_at":"2026-05-18T01:30:49Z"},{"alias_kind":"arxiv_version","alias_value":"1308.0383v1","created_at":"2026-05-18T01:30:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1308.0383","created_at":"2026-05-18T01:30:49Z"},{"alias_kind":"pith_short_12","alias_value":"FU3BHYVOV2YQ","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_16","alias_value":"FU3BHYVOV2YQXJQH","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_8","alias_value":"FU3BHYVO","created_at":"2026-05-18T12:27:45Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:FU3BHYVOV2YQXJQHPZ5HZO2UBJ","target":"record","payload":{"canonical_record":{"source":{"id":"1308.0383","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2013-08-02T01:11:04Z","cross_cats_sorted":[],"title_canon_sha256":"c106fc3aca940e373fda7d719e4dc700b12dd83f59393f426d04559b8089a910","abstract_canon_sha256":"0ea0c1820488546091806710fbf86d92d3a9862478536bf7fa988affc6ec47ea"},"schema_version":"1.0"},"canonical_sha256":"2d3613e2aeaeb10ba6077e7a7cbb540a6febadcbaa911f37109d09f1dee6fb70","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:30:49.451447Z","signature_b64":"66Wo8dkIsUnFioui83gSmai5/ivT/9eRSi1J6h42kOarHDQ5KUxrkINJHLtw8rNvKa969DvFY/hBBHlsY8zBBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2d3613e2aeaeb10ba6077e7a7cbb540a6febadcbaa911f37109d09f1dee6fb70","last_reissued_at":"2026-05-18T01:30:49.450870Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:30:49.450870Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1308.0383","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":"2026-05-18T01:30:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"prTICj9frarE/yMb9ct0FOv5jNcVNPkt1VaMZIkmvJNHwcsBIaUrdUbNRDza2TFj7/9mrGfeheJWP82IhBrVAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-28T15:29:08.768832Z"},"content_sha256":"a24812ce79c8ec2e81f0b93edc03e96fdec945c92cf22acea6fded37c65573d6","schema_version":"1.0","event_id":"sha256:a24812ce79c8ec2e81f0b93edc03e96fdec945c92cf22acea6fded37c65573d6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:FU3BHYVOV2YQXJQHPZ5HZO2UBJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Beam dynamics studies of the photo-injector in low-charge operation mode for the ERL test facility at IHEP","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.acc-ph","authors_text":"Jiao Yi, Xiao Ou-Zheng","submitted_at":"2013-08-02T01:11:04Z","abstract_excerpt":"The energy recovery linac test facility (ERL-TF), a compact ERL-FEL (free electron laser) two-purpose machine, was proposed at the Institute of High Energy Physics, Beijing. As one important component of the ERL-TF, the photo-injector started with a photocathode direct-current gun has been designed. In this paper optimization of the injector beam dynamics in low-charge operation mode is performed with iterative scans using Impact-T. In addition, the dependencies between the optimized beam quality and the initial offset at cathode and element parameters are investigated. The tolerance of alignm"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1308.0383","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":"2026-05-18T01:30:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZGkClibJ/kv6jA/wU+IGVEEfw2IIgVFrFqchS1duhINf3I2vxQQayejoUwOmpcR4bpDwjr4M6vg/NoyMJf8eDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-28T15:29:08.769162Z"},"content_sha256":"3d1c55a58ca79e2caa36c39095da641b05870c0dc81581446963c300e9a77711","schema_version":"1.0","event_id":"sha256:3d1c55a58ca79e2caa36c39095da641b05870c0dc81581446963c300e9a77711"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FU3BHYVOV2YQXJQHPZ5HZO2UBJ/bundle.json","state_url":"https://pith.science/pith/FU3BHYVOV2YQXJQHPZ5HZO2UBJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FU3BHYVOV2YQXJQHPZ5HZO2UBJ/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":"2026-06-28T15:29:08Z","links":{"resolver":"https://pith.science/pith/FU3BHYVOV2YQXJQHPZ5HZO2UBJ","bundle":"https://pith.science/pith/FU3BHYVOV2YQXJQHPZ5HZO2UBJ/bundle.json","state":"https://pith.science/pith/FU3BHYVOV2YQXJQHPZ5HZO2UBJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FU3BHYVOV2YQXJQHPZ5HZO2UBJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:FU3BHYVOV2YQXJQHPZ5HZO2UBJ","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":"0ea0c1820488546091806710fbf86d92d3a9862478536bf7fa988affc6ec47ea","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2013-08-02T01:11:04Z","title_canon_sha256":"c106fc3aca940e373fda7d719e4dc700b12dd83f59393f426d04559b8089a910"},"schema_version":"1.0","source":{"id":"1308.0383","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1308.0383","created_at":"2026-05-18T01:30:49Z"},{"alias_kind":"arxiv_version","alias_value":"1308.0383v1","created_at":"2026-05-18T01:30:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1308.0383","created_at":"2026-05-18T01:30:49Z"},{"alias_kind":"pith_short_12","alias_value":"FU3BHYVOV2YQ","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_16","alias_value":"FU3BHYVOV2YQXJQH","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_8","alias_value":"FU3BHYVO","created_at":"2026-05-18T12:27:45Z"}],"graph_snapshots":[{"event_id":"sha256:3d1c55a58ca79e2caa36c39095da641b05870c0dc81581446963c300e9a77711","target":"graph","created_at":"2026-05-18T01:30:49Z","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 energy recovery linac test facility (ERL-TF), a compact ERL-FEL (free electron laser) two-purpose machine, was proposed at the Institute of High Energy Physics, Beijing. As one important component of the ERL-TF, the photo-injector started with a photocathode direct-current gun has been designed. In this paper optimization of the injector beam dynamics in low-charge operation mode is performed with iterative scans using Impact-T. In addition, the dependencies between the optimized beam quality and the initial offset at cathode and element parameters are investigated. The tolerance of alignm","authors_text":"Jiao Yi, Xiao Ou-Zheng","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2013-08-02T01:11:04Z","title":"Beam dynamics studies of the photo-injector in low-charge operation mode for the ERL test facility at IHEP"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1308.0383","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:a24812ce79c8ec2e81f0b93edc03e96fdec945c92cf22acea6fded37c65573d6","target":"record","created_at":"2026-05-18T01:30:49Z","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":"0ea0c1820488546091806710fbf86d92d3a9862478536bf7fa988affc6ec47ea","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2013-08-02T01:11:04Z","title_canon_sha256":"c106fc3aca940e373fda7d719e4dc700b12dd83f59393f426d04559b8089a910"},"schema_version":"1.0","source":{"id":"1308.0383","kind":"arxiv","version":1}},"canonical_sha256":"2d3613e2aeaeb10ba6077e7a7cbb540a6febadcbaa911f37109d09f1dee6fb70","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2d3613e2aeaeb10ba6077e7a7cbb540a6febadcbaa911f37109d09f1dee6fb70","first_computed_at":"2026-05-18T01:30:49.450870Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:30:49.450870Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"66Wo8dkIsUnFioui83gSmai5/ivT/9eRSi1J6h42kOarHDQ5KUxrkINJHLtw8rNvKa969DvFY/hBBHlsY8zBBg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:30:49.451447Z","signed_message":"canonical_sha256_bytes"},"source_id":"1308.0383","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a24812ce79c8ec2e81f0b93edc03e96fdec945c92cf22acea6fded37c65573d6","sha256:3d1c55a58ca79e2caa36c39095da641b05870c0dc81581446963c300e9a77711"],"state_sha256":"00ea4c998d1ac953fbb1fd51e75b0be07b195ee902d1a81cea5c3877f8ba6fdc"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"edrWDTxVJS5QkNaG++bpGzn2YCllRRPzmeZlEvQkY6m0e426xgqliT4zuuvwiFYzBNMrcJfsb6YyJI8BWJ9gBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-28T15:29:08.771053Z","bundle_sha256":"f5b6d6af6018b8f7c6bed4d17bc61bc74adb64bbe3de6247d7350245ee381c18"}}