{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:G7XVAZTBOJHOW7HAECACELIZMV","short_pith_number":"pith:G7XVAZTB","canonical_record":{"source":{"id":"2501.09587","kind":"arxiv","version":4},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ins-det","submitted_at":"2025-01-16T15:10:39Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"18a4a46522910d1b917be33de74f1619b68f6bb533ed7dc96bce0d7284d9aa94","abstract_canon_sha256":"2bfcc6720d12dd0fb1adf8955965469ef9ed74c1ad6b01052399a1e9a3b7f379"},"schema_version":"1.0"},"canonical_sha256":"37ef506661724eeb7ce02080222d19656ed1bb9bd4df2c738d38432c9b07e276","source":{"kind":"arxiv","id":"2501.09587","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2501.09587","created_at":"2026-07-05T10:34:16Z"},{"alias_kind":"arxiv_version","alias_value":"2501.09587v4","created_at":"2026-07-05T10:34:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2501.09587","created_at":"2026-07-05T10:34:16Z"},{"alias_kind":"pith_short_12","alias_value":"G7XVAZTBOJHO","created_at":"2026-07-05T10:34:16Z"},{"alias_kind":"pith_short_16","alias_value":"G7XVAZTBOJHOW7HA","created_at":"2026-07-05T10:34:16Z"},{"alias_kind":"pith_short_8","alias_value":"G7XVAZTB","created_at":"2026-07-05T10:34:16Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:G7XVAZTBOJHOW7HAECACELIZMV","target":"record","payload":{"canonical_record":{"source":{"id":"2501.09587","kind":"arxiv","version":4},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ins-det","submitted_at":"2025-01-16T15:10:39Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"18a4a46522910d1b917be33de74f1619b68f6bb533ed7dc96bce0d7284d9aa94","abstract_canon_sha256":"2bfcc6720d12dd0fb1adf8955965469ef9ed74c1ad6b01052399a1e9a3b7f379"},"schema_version":"1.0"},"canonical_sha256":"37ef506661724eeb7ce02080222d19656ed1bb9bd4df2c738d38432c9b07e276","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:34:16.647575Z","signature_b64":"xAVz2sAJg5aTugAO5FiloFiZ9sW7slRKuwcNx31gf+ujexaSbCDCdyYEaInihefq/QpQWbGQJdcqsDJn6nHWDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"37ef506661724eeb7ce02080222d19656ed1bb9bd4df2c738d38432c9b07e276","last_reissued_at":"2026-07-05T10:34:16.647070Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:34:16.647070Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2501.09587","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T10:34:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xvWkho/1T1HCCLrC7vKwAN/2DLDfTzw0QmkiIljxSQGI1A1qwYBxz6bw8YdEb9tlIO+KAbQq5IC6Q8KxL4YLDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T13:19:19.484689Z"},"content_sha256":"be55112c3aedf41d5261c58693fae665c8ea39f0c6553ed00c95de4af48c86f8","schema_version":"1.0","event_id":"sha256:be55112c3aedf41d5261c58693fae665c8ea39f0c6553ed00c95de4af48c86f8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:G7XVAZTBOJHOW7HAECACELIZMV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Ultra-Low material budget GEM based TPC for tracking with VMM3a readout","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"physics.ins-det","authors_text":"A. Amato, B. Banto Oberhauser, B. Zeh, D. Janssens, D. Pfeiffer, E. Oliveri, F. Garcia, F.M. Brunbauer, F. Sauli, G. Janka, G. Orlandini, H. Muller, J. Samarati, K.J. Fl\\\"othner, L. Ropelewski, L. Scharenberg, M. Lisowska, M. Meurer, M. van Stenis, M. W. Heiss, R. Veenhof, S. Biswas, T. Prokscha, X. Zhao","submitted_at":"2025-01-16T15:10:39Z","abstract_excerpt":"The Gaseous Electron Multiplier-based Time Projection Chamber (GEM-TPC) in TWIN configuration for particle tracking has been consolidated after extensive investigations in different facilities to study its tracking performance. The most attractive feature of this detector is its ultra-low material budget, which is 0.28\\% X/X$_0$ and can be further reduced by decreasing the thickness of the gas traversed by the incident particles. Thus, it provides excellent position reconstruction and reduced multi-scattering. This detector consists of two GEM-TPCs with drift fields in opposite directions, ach"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2501.09587","kind":"arxiv","version":4},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2501.09587/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T10:34:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fR4Fcou9twIPnorVpT4juvVuHR1dIiqzIKOW7BstF1aV0AsB7yI6VrDjzziDEOFL34XGySF2mRZJ5ntgZKQtBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T13:19:19.485205Z"},"content_sha256":"e15e750d285eb5db81773cad24d1530d8824d483675ad04b8b285762d4066f61","schema_version":"1.0","event_id":"sha256:e15e750d285eb5db81773cad24d1530d8824d483675ad04b8b285762d4066f61"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/G7XVAZTBOJHOW7HAECACELIZMV/bundle.json","state_url":"https://pith.science/pith/G7XVAZTBOJHOW7HAECACELIZMV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/G7XVAZTBOJHOW7HAECACELIZMV/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":"2026-08-06T13:19:19Z","links":{"resolver":"https://pith.science/pith/G7XVAZTBOJHOW7HAECACELIZMV","bundle":"https://pith.science/pith/G7XVAZTBOJHOW7HAECACELIZMV/bundle.json","state":"https://pith.science/pith/G7XVAZTBOJHOW7HAECACELIZMV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/G7XVAZTBOJHOW7HAECACELIZMV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:G7XVAZTBOJHOW7HAECACELIZMV","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":"2bfcc6720d12dd0fb1adf8955965469ef9ed74c1ad6b01052399a1e9a3b7f379","cross_cats_sorted":["hep-ex"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ins-det","submitted_at":"2025-01-16T15:10:39Z","title_canon_sha256":"18a4a46522910d1b917be33de74f1619b68f6bb533ed7dc96bce0d7284d9aa94"},"schema_version":"1.0","source":{"id":"2501.09587","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2501.09587","created_at":"2026-07-05T10:34:16Z"},{"alias_kind":"arxiv_version","alias_value":"2501.09587v4","created_at":"2026-07-05T10:34:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2501.09587","created_at":"2026-07-05T10:34:16Z"},{"alias_kind":"pith_short_12","alias_value":"G7XVAZTBOJHO","created_at":"2026-07-05T10:34:16Z"},{"alias_kind":"pith_short_16","alias_value":"G7XVAZTBOJHOW7HA","created_at":"2026-07-05T10:34:16Z"},{"alias_kind":"pith_short_8","alias_value":"G7XVAZTB","created_at":"2026-07-05T10:34:16Z"}],"graph_snapshots":[{"event_id":"sha256:e15e750d285eb5db81773cad24d1530d8824d483675ad04b8b285762d4066f61","target":"graph","created_at":"2026-07-05T10:34:16Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2501.09587/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The Gaseous Electron Multiplier-based Time Projection Chamber (GEM-TPC) in TWIN configuration for particle tracking has been consolidated after extensive investigations in different facilities to study its tracking performance. The most attractive feature of this detector is its ultra-low material budget, which is 0.28\\% X/X$_0$ and can be further reduced by decreasing the thickness of the gas traversed by the incident particles. Thus, it provides excellent position reconstruction and reduced multi-scattering. This detector consists of two GEM-TPCs with drift fields in opposite directions, ach","authors_text":"A. Amato, B. Banto Oberhauser, B. Zeh, D. Janssens, D. Pfeiffer, E. Oliveri, F. Garcia, F.M. Brunbauer, F. Sauli, G. Janka, G. Orlandini, H. Muller, J. Samarati, K.J. Fl\\\"othner, L. Ropelewski, L. Scharenberg, M. Lisowska, M. Meurer, M. van Stenis, M. W. Heiss, R. Veenhof, S. Biswas, T. Prokscha, X. Zhao","cross_cats":["hep-ex"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ins-det","submitted_at":"2025-01-16T15:10:39Z","title":"The Ultra-Low material budget GEM based TPC for tracking with VMM3a readout"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2501.09587","kind":"arxiv","version":4},"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:be55112c3aedf41d5261c58693fae665c8ea39f0c6553ed00c95de4af48c86f8","target":"record","created_at":"2026-07-05T10:34:16Z","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":"2bfcc6720d12dd0fb1adf8955965469ef9ed74c1ad6b01052399a1e9a3b7f379","cross_cats_sorted":["hep-ex"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ins-det","submitted_at":"2025-01-16T15:10:39Z","title_canon_sha256":"18a4a46522910d1b917be33de74f1619b68f6bb533ed7dc96bce0d7284d9aa94"},"schema_version":"1.0","source":{"id":"2501.09587","kind":"arxiv","version":4}},"canonical_sha256":"37ef506661724eeb7ce02080222d19656ed1bb9bd4df2c738d38432c9b07e276","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"37ef506661724eeb7ce02080222d19656ed1bb9bd4df2c738d38432c9b07e276","first_computed_at":"2026-07-05T10:34:16.647070Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:34:16.647070Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xAVz2sAJg5aTugAO5FiloFiZ9sW7slRKuwcNx31gf+ujexaSbCDCdyYEaInihefq/QpQWbGQJdcqsDJn6nHWDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T10:34:16.647575Z","signed_message":"canonical_sha256_bytes"},"source_id":"2501.09587","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:be55112c3aedf41d5261c58693fae665c8ea39f0c6553ed00c95de4af48c86f8","sha256:e15e750d285eb5db81773cad24d1530d8824d483675ad04b8b285762d4066f61"],"state_sha256":"6a00d2f82812b9dfab092864542da5c804a3569d7e23052e1e774f864ee5a957"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JDcZYvKa5k3Lcy/hVtEsHQhyMlZFNQDaDHxHb/5jU06IymGbQqijsVRzy8OQhDFMz4DTb8scYbKz8ea1GWdaAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T13:19:19.488660Z","bundle_sha256":"083d3a476fe68560c937cbcb0d90169c904755c944f6747030592068d4732499"}}