{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:M3O3Y6RYK3JSFOW5QXDWCCDGYZ","short_pith_number":"pith:M3O3Y6RY","canonical_record":{"source":{"id":"1708.02118","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2017-08-07T13:47:27Z","cross_cats_sorted":[],"title_canon_sha256":"bf2e1843eda4aecd486fe1e45f0d7edf67026e4eb582d80acda679a6273affa3","abstract_canon_sha256":"c12b20fa5600f13e6c7779ddff19e739b59ebf57cba09ac3115a617b1f3adfd3"},"schema_version":"1.0"},"canonical_sha256":"66ddbc7a3856d322badd85c7610866c64e0d9c1762ebce2b8de25dd590253a0e","source":{"kind":"arxiv","id":"1708.02118","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.02118","created_at":"2026-05-18T00:38:32Z"},{"alias_kind":"arxiv_version","alias_value":"1708.02118v1","created_at":"2026-05-18T00:38:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.02118","created_at":"2026-05-18T00:38:32Z"},{"alias_kind":"pith_short_12","alias_value":"M3O3Y6RYK3JS","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_16","alias_value":"M3O3Y6RYK3JSFOW5","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_8","alias_value":"M3O3Y6RY","created_at":"2026-05-18T12:31:28Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:M3O3Y6RYK3JSFOW5QXDWCCDGYZ","target":"record","payload":{"canonical_record":{"source":{"id":"1708.02118","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2017-08-07T13:47:27Z","cross_cats_sorted":[],"title_canon_sha256":"bf2e1843eda4aecd486fe1e45f0d7edf67026e4eb582d80acda679a6273affa3","abstract_canon_sha256":"c12b20fa5600f13e6c7779ddff19e739b59ebf57cba09ac3115a617b1f3adfd3"},"schema_version":"1.0"},"canonical_sha256":"66ddbc7a3856d322badd85c7610866c64e0d9c1762ebce2b8de25dd590253a0e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:38:32.276761Z","signature_b64":"OcuGB79XG/hP3Eidm6U4vIH0G6C1zy9UwhozcfXB8D42prMmgN8keZcDwCzxyKI1CnWL/czMSA81v1lRclltAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"66ddbc7a3856d322badd85c7610866c64e0d9c1762ebce2b8de25dd590253a0e","last_reissued_at":"2026-05-18T00:38:32.276297Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:38:32.276297Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1708.02118","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":"2026-05-18T00:38:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6w2rn0wzMTqRjDjbAeDfimrp/75ZjjcnKuv3IH2w1cZwCF7Cu/+O/iaxdMezIU5nKTCLhEQt4bFE/HK80Z5rCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-17T05:16:43.736183Z"},"content_sha256":"298f331279707da4216f85f71e0ea510ae771aba5bd9f4a09017c72582793e71","schema_version":"1.0","event_id":"sha256:298f331279707da4216f85f71e0ea510ae771aba5bd9f4a09017c72582793e71"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:M3O3Y6RYK3JSFOW5QXDWCCDGYZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Preliminary results of Ion Backflow study for a single GEM detector","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.ins-det","authors_text":"Deb Sankar Bhattacharya, P K Sahu, Sagarika Swain, Sanjib K Sahu","submitted_at":"2017-08-07T13:47:27Z","abstract_excerpt":"Gaseous detectors are used in both low energy and high energy physics experiments. The present day gaseous detectors, i.e., the Micro-Pattern gaseous detectors (MPGD) are more efficient and fast. Gas Electron multiplier (GEM) is quite well know among the MPGD members. The MPGDs are also being used in other applications like tomography/imaging, moreover, recently, hybridization of two different kinds of MPGD is another emerging subject of R\\&D. Ion feedback is an intrinsic drawback of the gaseous detectors. However, it is not a big issue where the event rate is not very high, or the drift volum"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.02118","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":"2026-05-18T00:38:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TbA/brWnzCrwysUEiqYfZlmiA+YFCTQr+AIVMzgPK1ldxvdYmtbFGVpyns9VNrPcYAol5uBiLQ8wWZEerUzJAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-17T05:16:43.737000Z"},"content_sha256":"02cfe4ff9eb750b5f9cb76b163e3e0ff5a6f6c6b057e98648ce87c820040c086","schema_version":"1.0","event_id":"sha256:02cfe4ff9eb750b5f9cb76b163e3e0ff5a6f6c6b057e98648ce87c820040c086"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/M3O3Y6RYK3JSFOW5QXDWCCDGYZ/bundle.json","state_url":"https://pith.science/pith/M3O3Y6RYK3JSFOW5QXDWCCDGYZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/M3O3Y6RYK3JSFOW5QXDWCCDGYZ/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":"2026-08-17T05:16:43Z","links":{"resolver":"https://pith.science/pith/M3O3Y6RYK3JSFOW5QXDWCCDGYZ","bundle":"https://pith.science/pith/M3O3Y6RYK3JSFOW5QXDWCCDGYZ/bundle.json","state":"https://pith.science/pith/M3O3Y6RYK3JSFOW5QXDWCCDGYZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/M3O3Y6RYK3JSFOW5QXDWCCDGYZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:M3O3Y6RYK3JSFOW5QXDWCCDGYZ","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":"c12b20fa5600f13e6c7779ddff19e739b59ebf57cba09ac3115a617b1f3adfd3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2017-08-07T13:47:27Z","title_canon_sha256":"bf2e1843eda4aecd486fe1e45f0d7edf67026e4eb582d80acda679a6273affa3"},"schema_version":"1.0","source":{"id":"1708.02118","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.02118","created_at":"2026-05-18T00:38:32Z"},{"alias_kind":"arxiv_version","alias_value":"1708.02118v1","created_at":"2026-05-18T00:38:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.02118","created_at":"2026-05-18T00:38:32Z"},{"alias_kind":"pith_short_12","alias_value":"M3O3Y6RYK3JS","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_16","alias_value":"M3O3Y6RYK3JSFOW5","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_8","alias_value":"M3O3Y6RY","created_at":"2026-05-18T12:31:28Z"}],"graph_snapshots":[{"event_id":"sha256:02cfe4ff9eb750b5f9cb76b163e3e0ff5a6f6c6b057e98648ce87c820040c086","target":"graph","created_at":"2026-05-18T00:38:32Z","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":"Gaseous detectors are used in both low energy and high energy physics experiments. The present day gaseous detectors, i.e., the Micro-Pattern gaseous detectors (MPGD) are more efficient and fast. Gas Electron multiplier (GEM) is quite well know among the MPGD members. The MPGDs are also being used in other applications like tomography/imaging, moreover, recently, hybridization of two different kinds of MPGD is another emerging subject of R\\&D. Ion feedback is an intrinsic drawback of the gaseous detectors. However, it is not a big issue where the event rate is not very high, or the drift volum","authors_text":"Deb Sankar Bhattacharya, P K Sahu, Sagarika Swain, Sanjib K Sahu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2017-08-07T13:47:27Z","title":"Preliminary results of Ion Backflow study for a single GEM detector"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.02118","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":"sha256:298f331279707da4216f85f71e0ea510ae771aba5bd9f4a09017c72582793e71","target":"record","created_at":"2026-05-18T00:38:32Z","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":"c12b20fa5600f13e6c7779ddff19e739b59ebf57cba09ac3115a617b1f3adfd3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2017-08-07T13:47:27Z","title_canon_sha256":"bf2e1843eda4aecd486fe1e45f0d7edf67026e4eb582d80acda679a6273affa3"},"schema_version":"1.0","source":{"id":"1708.02118","kind":"arxiv","version":1}},"canonical_sha256":"66ddbc7a3856d322badd85c7610866c64e0d9c1762ebce2b8de25dd590253a0e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"66ddbc7a3856d322badd85c7610866c64e0d9c1762ebce2b8de25dd590253a0e","first_computed_at":"2026-05-18T00:38:32.276297Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:38:32.276297Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"OcuGB79XG/hP3Eidm6U4vIH0G6C1zy9UwhozcfXB8D42prMmgN8keZcDwCzxyKI1CnWL/czMSA81v1lRclltAg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:38:32.276761Z","signed_message":"canonical_sha256_bytes"},"source_id":"1708.02118","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:298f331279707da4216f85f71e0ea510ae771aba5bd9f4a09017c72582793e71","sha256:02cfe4ff9eb750b5f9cb76b163e3e0ff5a6f6c6b057e98648ce87c820040c086"],"state_sha256":"b4c2acd69da58239afe0e97fb560888661330f926c501be0263901ecd5fb644a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QVaxU+pjqZJ7WDuMYbxXa/7Qm7E9ZlH5ksWKAb7oP333CSYJXg92nfaRnkLPIQHp0Ecvv3eF5K92UCFUOeitBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-17T05:16:43.743113Z","bundle_sha256":"2912d97b9bb55a11ffc1a6638fd2912b7a99957d83c8f5c09b33816612ecd2a4"}}