{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:I76XAYAZQ6VGESNCANWD6HTYBK","short_pith_number":"pith:I76XAYAZ","canonical_record":{"source":{"id":"1710.08656","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2017-10-24T08:53:56Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"b7ae7fe4d20f040335791cec0eb0be2a67d825804854aae4fd82ec0a463be3c2","abstract_canon_sha256":"9feb140340c4398ef21ab3f90acfbce6a97c21767a0c850809873918a53de9bb"},"schema_version":"1.0"},"canonical_sha256":"47fd70601987aa6249a2036c3f1e780aa815bd3a8c4d2586b44fb478a9e40617","source":{"kind":"arxiv","id":"1710.08656","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1710.08656","created_at":"2026-05-18T00:32:04Z"},{"alias_kind":"arxiv_version","alias_value":"1710.08656v1","created_at":"2026-05-18T00:32:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1710.08656","created_at":"2026-05-18T00:32:04Z"},{"alias_kind":"pith_short_12","alias_value":"I76XAYAZQ6VG","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_16","alias_value":"I76XAYAZQ6VGESNC","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_8","alias_value":"I76XAYAZ","created_at":"2026-05-18T12:31:21Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:I76XAYAZQ6VGESNCANWD6HTYBK","target":"record","payload":{"canonical_record":{"source":{"id":"1710.08656","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2017-10-24T08:53:56Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"b7ae7fe4d20f040335791cec0eb0be2a67d825804854aae4fd82ec0a463be3c2","abstract_canon_sha256":"9feb140340c4398ef21ab3f90acfbce6a97c21767a0c850809873918a53de9bb"},"schema_version":"1.0"},"canonical_sha256":"47fd70601987aa6249a2036c3f1e780aa815bd3a8c4d2586b44fb478a9e40617","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:32:04.206342Z","signature_b64":"0ZaClcWMatlbv7Vn1H0f9r4mik+qZdhJVg1dAzto4gpebTnNyRxhEbdOUyHDf1YOL5Mg4hJSE6lnMeJURhvZDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"47fd70601987aa6249a2036c3f1e780aa815bd3a8c4d2586b44fb478a9e40617","last_reissued_at":"2026-05-18T00:32:04.205768Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:32:04.205768Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1710.08656","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":"2026-05-18T00:32:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IfeORp2j2SKia4E9dKczyakshS7mbC+/HSWushRPvpDnzAo/IT6PsTfoFTxnj4ZvCAeNTvh/qLZ4J75AfyoqAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T11:59:36.245183Z"},"content_sha256":"5bb9fc1d02faa5854a91cea145a9ef8f29228c966214fb2b11b287c5de59f99f","schema_version":"1.0","event_id":"sha256:5bb9fc1d02faa5854a91cea145a9ef8f29228c966214fb2b11b287c5de59f99f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:I76XAYAZQ6VGESNCANWD6HTYBK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Novel MPGD based Detectors of Single Photons in COMPASS RICH-1","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"physics.ins-det","authors_text":"A.Bressan, A.Maggiora, A.Martin, B.Gobbo, C.A.Santos, C.Chatterjee, C.D.R.Azevedo, D.Panzieri, F.A.B.Pereira, F.Bradamante, F.Herrmann, F.Tessarotto, G.Hamar, G.Menon, G.Sbrizzai, H.Fischer, J.Agarwala M.Alexeev, J.F.C.A.Veloso, J.Novy, K.Steiger, L.Steiger, M.Buchele, M.Chiosso, M.Finger, M.Finger Jr., M.Gregori, M.Slunecka, M.Sulc, N.Makke, O.Denisov, P.Ciliberti, R.Birsa, S.Dalla Torre, S.Dasgupta, S.Levorato, S.Schopferer, Y.X.Zhao","submitted_at":"2017-10-24T08:53:56Z","abstract_excerpt":"COMPASS is a fixed target experiment at CERN SPS aimed to study Hadron Structure and Spectroscopy. Hadron Identification in the momentum range between 3 and 55 GeV/c is provided by a large gaseous Ring Imaging Cherenkov Counter (RICH-1). To cope with the challenges imposed by the new physics program of COMPASS, RICH-1 have been upgraded by replacing four MWPCs based photon detectors with newly developed MPGD based photon detectors. The architecture of the novel detectors is a hybrid combination of two layers of THGEMs and a MicroMegas. The top of the first THGEM is coated with CsI acting as a "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1710.08656","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":"2026-05-18T00:32:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5yetm2ck40Pwjb3jTtzru93Tz+9WWwFLkN/Llh7WZI5gN9rl+sOI23CFd3tgpKlzc4psc3x+HfskQTVvo9KnAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T11:59:36.245886Z"},"content_sha256":"1c2cd1935a447148321f95b87d9b4f784e8aabc5f113230b495852871b330913","schema_version":"1.0","event_id":"sha256:1c2cd1935a447148321f95b87d9b4f784e8aabc5f113230b495852871b330913"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/I76XAYAZQ6VGESNCANWD6HTYBK/bundle.json","state_url":"https://pith.science/pith/I76XAYAZQ6VGESNCANWD6HTYBK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/I76XAYAZQ6VGESNCANWD6HTYBK/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":"2026-05-26T11:59:36Z","links":{"resolver":"https://pith.science/pith/I76XAYAZQ6VGESNCANWD6HTYBK","bundle":"https://pith.science/pith/I76XAYAZQ6VGESNCANWD6HTYBK/bundle.json","state":"https://pith.science/pith/I76XAYAZQ6VGESNCANWD6HTYBK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/I76XAYAZQ6VGESNCANWD6HTYBK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:I76XAYAZQ6VGESNCANWD6HTYBK","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":"9feb140340c4398ef21ab3f90acfbce6a97c21767a0c850809873918a53de9bb","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2017-10-24T08:53:56Z","title_canon_sha256":"b7ae7fe4d20f040335791cec0eb0be2a67d825804854aae4fd82ec0a463be3c2"},"schema_version":"1.0","source":{"id":"1710.08656","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1710.08656","created_at":"2026-05-18T00:32:04Z"},{"alias_kind":"arxiv_version","alias_value":"1710.08656v1","created_at":"2026-05-18T00:32:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1710.08656","created_at":"2026-05-18T00:32:04Z"},{"alias_kind":"pith_short_12","alias_value":"I76XAYAZQ6VG","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_16","alias_value":"I76XAYAZQ6VGESNC","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_8","alias_value":"I76XAYAZ","created_at":"2026-05-18T12:31:21Z"}],"graph_snapshots":[{"event_id":"sha256:1c2cd1935a447148321f95b87d9b4f784e8aabc5f113230b495852871b330913","target":"graph","created_at":"2026-05-18T00:32:04Z","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":"COMPASS is a fixed target experiment at CERN SPS aimed to study Hadron Structure and Spectroscopy. Hadron Identification in the momentum range between 3 and 55 GeV/c is provided by a large gaseous Ring Imaging Cherenkov Counter (RICH-1). To cope with the challenges imposed by the new physics program of COMPASS, RICH-1 have been upgraded by replacing four MWPCs based photon detectors with newly developed MPGD based photon detectors. The architecture of the novel detectors is a hybrid combination of two layers of THGEMs and a MicroMegas. The top of the first THGEM is coated with CsI acting as a ","authors_text":"A.Bressan, A.Maggiora, A.Martin, B.Gobbo, C.A.Santos, C.Chatterjee, C.D.R.Azevedo, D.Panzieri, F.A.B.Pereira, F.Bradamante, F.Herrmann, F.Tessarotto, G.Hamar, G.Menon, G.Sbrizzai, H.Fischer, J.Agarwala M.Alexeev, J.F.C.A.Veloso, J.Novy, K.Steiger, L.Steiger, M.Buchele, M.Chiosso, M.Finger, M.Finger Jr., M.Gregori, M.Slunecka, M.Sulc, N.Makke, O.Denisov, P.Ciliberti, R.Birsa, S.Dalla Torre, S.Dasgupta, S.Levorato, S.Schopferer, Y.X.Zhao","cross_cats":["hep-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2017-10-24T08:53:56Z","title":"Novel MPGD based Detectors of Single Photons in COMPASS RICH-1"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1710.08656","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":"sha256:5bb9fc1d02faa5854a91cea145a9ef8f29228c966214fb2b11b287c5de59f99f","target":"record","created_at":"2026-05-18T00:32:04Z","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":"9feb140340c4398ef21ab3f90acfbce6a97c21767a0c850809873918a53de9bb","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2017-10-24T08:53:56Z","title_canon_sha256":"b7ae7fe4d20f040335791cec0eb0be2a67d825804854aae4fd82ec0a463be3c2"},"schema_version":"1.0","source":{"id":"1710.08656","kind":"arxiv","version":1}},"canonical_sha256":"47fd70601987aa6249a2036c3f1e780aa815bd3a8c4d2586b44fb478a9e40617","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"47fd70601987aa6249a2036c3f1e780aa815bd3a8c4d2586b44fb478a9e40617","first_computed_at":"2026-05-18T00:32:04.205768Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:32:04.205768Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0ZaClcWMatlbv7Vn1H0f9r4mik+qZdhJVg1dAzto4gpebTnNyRxhEbdOUyHDf1YOL5Mg4hJSE6lnMeJURhvZDg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:32:04.206342Z","signed_message":"canonical_sha256_bytes"},"source_id":"1710.08656","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5bb9fc1d02faa5854a91cea145a9ef8f29228c966214fb2b11b287c5de59f99f","sha256:1c2cd1935a447148321f95b87d9b4f784e8aabc5f113230b495852871b330913"],"state_sha256":"ce93d7d92bff42256adba3c0a286730bcb553ef67f81ba9dd146b64d40910761"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"H43cskcRn2PPc9MZSyFBxN0XpXO0D/PCsTvjRWly9y/AQpm1tOPlLXth0Sbfo6wv6rSIar2oQsVCTX1fPNZkCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T11:59:36.249248Z","bundle_sha256":"b9ef5487902a8de49bdf47311ebf815150a8fcd6ce8b8773f69b6eb2cc7ef1f9"}}