{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2001:UTD2HOI5WAU4WNNW6CZ22YK2H2","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":"115fe673513a28f79887e276e977ce7fd410237a7a631023145b166acd881990","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2001-10-31T21:10:51Z","title_canon_sha256":"b0524253d4ea86ecf25bdab320fbe7624f089545cb037888fbab51f42d22a0ec"},"schema_version":"1.0","source":{"id":"astro-ph/0111003","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0111003","created_at":"2026-05-18T01:40:43Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0111003v1","created_at":"2026-05-18T01:40:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0111003","created_at":"2026-05-18T01:40:43Z"},{"alias_kind":"pith_short_12","alias_value":"UTD2HOI5WAU4","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"UTD2HOI5WAU4WNNW","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"UTD2HOI5","created_at":"2026-05-18T12:25:50Z"}],"graph_snapshots":[{"event_id":"sha256:10f3a995912edac8f09dfe0ee93532493b653510e5f1e923f1e9d0572535c066","target":"graph","created_at":"2026-05-18T01:40:43Z","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":"We have implemented a Monte Carlo algorithm to model and predict the response of various kinds of CCDs to X-ray photons and minimally-ionizing particles and have applied this model to the CCDs in the Chandra X-ray Observatory's Advanced CCD Imaging Spectrometer. This algorithm draws on empirical results and predicts the response of all basic types of X-ray CCD devices. It relies on new solutions of the diffusion equation, including recombination, to predict the radial charge cloud distribution in field-free regions of CCDs. By adjusting the size of the charge clouds, we can reproduce the event","authors_text":"E. Moskalenko, G. Chartas, G. G. Pavlov, J. A. Nousek, L. K. Townsley, P. S. Broos","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2001-10-31T21:10:51Z","title":"Simulating CCDs for the Chandra Advanced CCD Imaging Spectrometer"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0111003","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":"sha256:31d1952d2b288244c73390731fb815c0edceb3be6f76d4ae3d2364564cd8b983","target":"record","created_at":"2026-05-18T01:40:43Z","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":"115fe673513a28f79887e276e977ce7fd410237a7a631023145b166acd881990","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2001-10-31T21:10:51Z","title_canon_sha256":"b0524253d4ea86ecf25bdab320fbe7624f089545cb037888fbab51f42d22a0ec"},"schema_version":"1.0","source":{"id":"astro-ph/0111003","kind":"arxiv","version":1}},"canonical_sha256":"a4c7a3b91db029cb35b6f0b3ad615a3ea289acfd4a32276f4d8da0498eb9b9ac","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a4c7a3b91db029cb35b6f0b3ad615a3ea289acfd4a32276f4d8da0498eb9b9ac","first_computed_at":"2026-05-18T01:40:43.834431Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:40:43.834431Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ekbpl8q6Ji5vPJjfnRZDQZszvFJsWK+R6k5/igE+jwuY3kfWZ7L6WB5kVWdzU4I/mIjYoQQjL8EQsiZw49UsBw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:40:43.834980Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0111003","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:31d1952d2b288244c73390731fb815c0edceb3be6f76d4ae3d2364564cd8b983","sha256:10f3a995912edac8f09dfe0ee93532493b653510e5f1e923f1e9d0572535c066"],"state_sha256":"8f47073a0fe11e4c37be4eddfc65120eb2986187fd907def6eb16cab968d807f"}