{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:PYKS25AWT7Q4HNGB2AH3TEBIXT","short_pith_number":"pith:PYKS25AW","canonical_record":{"source":{"id":"1706.06403","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2017-06-20T13:12:01Z","cross_cats_sorted":[],"title_canon_sha256":"168357335294c1649234cdd5d367a99f0e1f91528ec969fae4c19bbd3e6c4f91","abstract_canon_sha256":"b5650f1cd752dd4223f5af6366227b58bdc472497cab8a2be64540a7215927b1"},"schema_version":"1.0"},"canonical_sha256":"7e152d74169fe1c3b4c1d00fb99028bccc74b33f0653bf68d54362f0d118f121","source":{"kind":"arxiv","id":"1706.06403","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1706.06403","created_at":"2026-05-18T00:42:03Z"},{"alias_kind":"arxiv_version","alias_value":"1706.06403v1","created_at":"2026-05-18T00:42:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1706.06403","created_at":"2026-05-18T00:42:03Z"},{"alias_kind":"pith_short_12","alias_value":"PYKS25AWT7Q4","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_16","alias_value":"PYKS25AWT7Q4HNGB","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_8","alias_value":"PYKS25AW","created_at":"2026-05-18T12:31:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:PYKS25AWT7Q4HNGB2AH3TEBIXT","target":"record","payload":{"canonical_record":{"source":{"id":"1706.06403","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2017-06-20T13:12:01Z","cross_cats_sorted":[],"title_canon_sha256":"168357335294c1649234cdd5d367a99f0e1f91528ec969fae4c19bbd3e6c4f91","abstract_canon_sha256":"b5650f1cd752dd4223f5af6366227b58bdc472497cab8a2be64540a7215927b1"},"schema_version":"1.0"},"canonical_sha256":"7e152d74169fe1c3b4c1d00fb99028bccc74b33f0653bf68d54362f0d118f121","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:42:03.339268Z","signature_b64":"La2cooLzr82+MftPaEZk3L+mma8GUx+Z8iIv62WoQ548oAW7Nhx1sH0tkNt2bPLwh0sc6Qk02B1ppI0PUL4lDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7e152d74169fe1c3b4c1d00fb99028bccc74b33f0653bf68d54362f0d118f121","last_reissued_at":"2026-05-18T00:42:03.338621Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:42:03.338621Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1706.06403","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":"2026-05-18T00:42:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eayFq6hjhnPmEEgrJHExoGSm2KuNYAxPxe8WYcvNn1fZvxzbtPN09s+BDtAagE31KqUVdopnZs5FCn7t3u7SCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T04:03:33.727411Z"},"content_sha256":"46525233c3401c4ef555228e63395e1e9246ce503a088ff8529a19e36607d628","schema_version":"1.0","event_id":"sha256:46525233c3401c4ef555228e63395e1e9246ce503a088ff8529a19e36607d628"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:PYKS25AWT7Q4HNGB2AH3TEBIXT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Highly efficient angularly resolving x-ray spectrometer optimized for absorption measurements with collimated sources","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.ins-det","authors_text":"Anders Persson, Henrik Ekerfelt, Isabel Gallardo-Gonz\\'ales, Jonas Bj\\\"orklund Svensson, Jonathan C. Wood, Kate\\v{r}ina Falk, Martin Hansson, Michal \\v{S}m\\'id, Olle Lundh, Stuart P.D.Mangles","submitted_at":"2017-06-20T13:12:01Z","abstract_excerpt":"Highly collimated betatron radiation from a laser wakefield accelerator is a promising tool for spectroscopic measurements. Therefore there is a requirement to create spectrometers suited to the unique properties of such a source. We demonstrate a spectrometer which achieves an energy resolution of < 5 eV at 9 keV and is angularly resolving the x-ray emission allowing the reference and spectrum to be recorded at the same time. The single photon analysis is used to significantly reduce the background noise. Theoretical performance of various configurations of the spectrometer is calculated by a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1706.06403","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":"2026-05-18T00:42:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6pX7j4KKwtv+HcMc/6g1HOglfYnGtyXtCRnFxv03fzN78Jn0XYlapCBne+0M5kfRGnkKWPVtUvk0Zb++m/WSDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T04:03:33.727763Z"},"content_sha256":"30d0a9220f64aa0b9b4f24ab89735708b39dc6d5d9869f7052b1bba83fa77191","schema_version":"1.0","event_id":"sha256:30d0a9220f64aa0b9b4f24ab89735708b39dc6d5d9869f7052b1bba83fa77191"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PYKS25AWT7Q4HNGB2AH3TEBIXT/bundle.json","state_url":"https://pith.science/pith/PYKS25AWT7Q4HNGB2AH3TEBIXT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PYKS25AWT7Q4HNGB2AH3TEBIXT/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":"2026-06-02T04:03:33Z","links":{"resolver":"https://pith.science/pith/PYKS25AWT7Q4HNGB2AH3TEBIXT","bundle":"https://pith.science/pith/PYKS25AWT7Q4HNGB2AH3TEBIXT/bundle.json","state":"https://pith.science/pith/PYKS25AWT7Q4HNGB2AH3TEBIXT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PYKS25AWT7Q4HNGB2AH3TEBIXT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:PYKS25AWT7Q4HNGB2AH3TEBIXT","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":"b5650f1cd752dd4223f5af6366227b58bdc472497cab8a2be64540a7215927b1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2017-06-20T13:12:01Z","title_canon_sha256":"168357335294c1649234cdd5d367a99f0e1f91528ec969fae4c19bbd3e6c4f91"},"schema_version":"1.0","source":{"id":"1706.06403","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1706.06403","created_at":"2026-05-18T00:42:03Z"},{"alias_kind":"arxiv_version","alias_value":"1706.06403v1","created_at":"2026-05-18T00:42:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1706.06403","created_at":"2026-05-18T00:42:03Z"},{"alias_kind":"pith_short_12","alias_value":"PYKS25AWT7Q4","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_16","alias_value":"PYKS25AWT7Q4HNGB","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_8","alias_value":"PYKS25AW","created_at":"2026-05-18T12:31:37Z"}],"graph_snapshots":[{"event_id":"sha256:30d0a9220f64aa0b9b4f24ab89735708b39dc6d5d9869f7052b1bba83fa77191","target":"graph","created_at":"2026-05-18T00:42:03Z","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":"Highly collimated betatron radiation from a laser wakefield accelerator is a promising tool for spectroscopic measurements. Therefore there is a requirement to create spectrometers suited to the unique properties of such a source. We demonstrate a spectrometer which achieves an energy resolution of < 5 eV at 9 keV and is angularly resolving the x-ray emission allowing the reference and spectrum to be recorded at the same time. The single photon analysis is used to significantly reduce the background noise. Theoretical performance of various configurations of the spectrometer is calculated by a","authors_text":"Anders Persson, Henrik Ekerfelt, Isabel Gallardo-Gonz\\'ales, Jonas Bj\\\"orklund Svensson, Jonathan C. Wood, Kate\\v{r}ina Falk, Martin Hansson, Michal \\v{S}m\\'id, Olle Lundh, Stuart P.D.Mangles","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2017-06-20T13:12:01Z","title":"Highly efficient angularly resolving x-ray spectrometer optimized for absorption measurements with collimated sources"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1706.06403","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":"sha256:46525233c3401c4ef555228e63395e1e9246ce503a088ff8529a19e36607d628","target":"record","created_at":"2026-05-18T00:42:03Z","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":"b5650f1cd752dd4223f5af6366227b58bdc472497cab8a2be64540a7215927b1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2017-06-20T13:12:01Z","title_canon_sha256":"168357335294c1649234cdd5d367a99f0e1f91528ec969fae4c19bbd3e6c4f91"},"schema_version":"1.0","source":{"id":"1706.06403","kind":"arxiv","version":1}},"canonical_sha256":"7e152d74169fe1c3b4c1d00fb99028bccc74b33f0653bf68d54362f0d118f121","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7e152d74169fe1c3b4c1d00fb99028bccc74b33f0653bf68d54362f0d118f121","first_computed_at":"2026-05-18T00:42:03.338621Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:42:03.338621Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"La2cooLzr82+MftPaEZk3L+mma8GUx+Z8iIv62WoQ548oAW7Nhx1sH0tkNt2bPLwh0sc6Qk02B1ppI0PUL4lDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:42:03.339268Z","signed_message":"canonical_sha256_bytes"},"source_id":"1706.06403","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:46525233c3401c4ef555228e63395e1e9246ce503a088ff8529a19e36607d628","sha256:30d0a9220f64aa0b9b4f24ab89735708b39dc6d5d9869f7052b1bba83fa77191"],"state_sha256":"444922780a4cf348a78ef8865f8d1c3adf6b00b3d75d689b7d85f2658952b472"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VugwRn/N7dNpnUd5Objn3fYqyVTnkjeNi+qGmKgVj6TE4amu7dE74ePmm1/Mwq9BIEDI8tjGUQwhqO97LtmWBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T04:03:33.729731Z","bundle_sha256":"57b7ec6c2c6b4b3055186963b7743afa8ae44755bda6393dd4615508bc929d6c"}}