{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2004:5GJSGH4FHLR2NWIB2RENRELIVM","short_pith_number":"pith:5GJSGH4F","schema_version":"1.0","canonical_sha256":"e993231f853ae3a6d901d448d89168ab3660ab15ed12519b037d8c406c2ceb52","source":{"kind":"arxiv","id":"physics/0403019","version":1},"attestation_state":"computed","paper":{"title":"Reading a GEM with a VLSI pixel ASIC used as a direct charge collecting anode","license":"","headline":"","cross_cats":["astro-ph"],"primary_cat":"physics.ins-det","authors_text":"A. Brez, C. Sgro, E. Costa, F. Angelini, F. Bitti, G. Spandre, L. Baldini, L. Latronico, M. Minuti, M.M. Massai, M. Razzano, N. Omodei, P. Soffitta, R. Bellazzini","submitted_at":"2004-03-01T17:03:53Z","abstract_excerpt":"In MicroPattern Gas Detectors (MPGD) when the pixel size is below 100 micron and the number of pixels is large (above 1000) it is virtually impossible to use the conventional PCB read-out approach to bring the signal charge from the individual pixel to the external electronics chain. For this reason a custom CMOS array of 2101 active pixels with 80 micron pitch, directly used as the charge collecting anode of a GEM amplifying structure, has been developed and built. Each charge collecting pad, hexagonally shaped, realized using the top metal layer of a deep submicron VLSI technology is individ"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"physics/0403019","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"physics.ins-det","submitted_at":"2004-03-01T17:03:53Z","cross_cats_sorted":["astro-ph"],"title_canon_sha256":"1aa9a1766513592001dd86659a7924c652816b44beff627954593ca975f9ccbd","abstract_canon_sha256":"a2dec3c64d12909b5097d67f0a88721eb517c1f2814fd1c6f4c2e295ada91845"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:38:08.510835Z","signature_b64":"OLgEsNxRplZxFNRLRlHDjexMefMB3C/7fnAAPOdENhhlro9+1p+bQxDSDgJv7Nr2qiGLubq5dYBYigIxFHlMBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e993231f853ae3a6d901d448d89168ab3660ab15ed12519b037d8c406c2ceb52","last_reissued_at":"2026-05-18T01:38:08.510151Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:38:08.510151Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Reading a GEM with a VLSI pixel ASIC used as a direct charge collecting anode","license":"","headline":"","cross_cats":["astro-ph"],"primary_cat":"physics.ins-det","authors_text":"A. Brez, C. Sgro, E. Costa, F. Angelini, F. Bitti, G. Spandre, L. Baldini, L. Latronico, M. Minuti, M.M. Massai, M. Razzano, N. Omodei, P. Soffitta, R. Bellazzini","submitted_at":"2004-03-01T17:03:53Z","abstract_excerpt":"In MicroPattern Gas Detectors (MPGD) when the pixel size is below 100 micron and the number of pixels is large (above 1000) it is virtually impossible to use the conventional PCB read-out approach to bring the signal charge from the individual pixel to the external electronics chain. For this reason a custom CMOS array of 2101 active pixels with 80 micron pitch, directly used as the charge collecting anode of a GEM amplifying structure, has been developed and built. Each charge collecting pad, hexagonally shaped, realized using the top metal layer of a deep submicron VLSI technology is individ"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"physics/0403019","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"physics/0403019","created_at":"2026-05-18T01:38:08.510265+00:00"},{"alias_kind":"arxiv_version","alias_value":"physics/0403019v1","created_at":"2026-05-18T01:38:08.510265+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.physics/0403019","created_at":"2026-05-18T01:38:08.510265+00:00"},{"alias_kind":"pith_short_12","alias_value":"5GJSGH4FHLR2","created_at":"2026-05-18T12:25:52.051335+00:00"},{"alias_kind":"pith_short_16","alias_value":"5GJSGH4FHLR2NWIB","created_at":"2026-05-18T12:25:52.051335+00:00"},{"alias_kind":"pith_short_8","alias_value":"5GJSGH4F","created_at":"2026-05-18T12:25:52.051335+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/5GJSGH4FHLR2NWIB2RENRELIVM","json":"https://pith.science/pith/5GJSGH4FHLR2NWIB2RENRELIVM.json","graph_json":"https://pith.science/api/pith-number/5GJSGH4FHLR2NWIB2RENRELIVM/graph.json","events_json":"https://pith.science/api/pith-number/5GJSGH4FHLR2NWIB2RENRELIVM/events.json","paper":"https://pith.science/paper/5GJSGH4F"},"agent_actions":{"view_html":"https://pith.science/pith/5GJSGH4FHLR2NWIB2RENRELIVM","download_json":"https://pith.science/pith/5GJSGH4FHLR2NWIB2RENRELIVM.json","view_paper":"https://pith.science/paper/5GJSGH4F","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=physics/0403019&json=true","fetch_graph":"https://pith.science/api/pith-number/5GJSGH4FHLR2NWIB2RENRELIVM/graph.json","fetch_events":"https://pith.science/api/pith-number/5GJSGH4FHLR2NWIB2RENRELIVM/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/5GJSGH4FHLR2NWIB2RENRELIVM/action/timestamp_anchor","attest_storage":"https://pith.science/pith/5GJSGH4FHLR2NWIB2RENRELIVM/action/storage_attestation","attest_author":"https://pith.science/pith/5GJSGH4FHLR2NWIB2RENRELIVM/action/author_attestation","sign_citation":"https://pith.science/pith/5GJSGH4FHLR2NWIB2RENRELIVM/action/citation_signature","submit_replication":"https://pith.science/pith/5GJSGH4FHLR2NWIB2RENRELIVM/action/replication_record"}},"created_at":"2026-05-18T01:38:08.510265+00:00","updated_at":"2026-05-18T01:38:08.510265+00:00"}