{
  "annotation_id": "47981278-c144-475b-8504-58d2953f3fce",
  "date_created": "2026-03-02T18:00:56.757000Z",
  "date_modified": "2026-03-02T18:00:56.757000Z",
  "file_hash": "827b87b7b47bc29a11f7389fad38af8e892d63cd1f90309b884c91192a6e16b1",
  "private": false,
  "record": {
    "abstract": "The physical processes of charge collection and gas multiplication of a Micro\nPixel Chamber (mu-PIC) were studied in detail using a three-dimensional\nsimulation. The collection efficiencies of primary electrons and gas\nmultiplication factors were calculated for several electrode structures. Based\non those studies, we analyzed the optimization of the electrode structure of\nthe mu-PIC, in order to obtain a high gas gain of more than 10^4 and a\nsimultaneous suppression of discharges. Consequently, we found that these\ncharacteristics strongly depend on the substrate thickness and the anode\ndiameter of the mu-PIC. In addition, a gas gain of 10^5 would be expected for a\nmu-PIC having a thick substrate of \u003e 150um.",
    "arxiv_id": "physics/0503223",
    "authors": [
      "Tsutomu Nagayoshi",
      "Atsushi Takada",
      "Hidetoshi Kubo",
      "Kentaro Miuchi",
      "Reiko Orito",
      "Yoko Okada",
      "Atsushi Takeda",
      "Toru Tanimori",
      "Masaru Ueno",
      "Oleg Bouianov",
      "Marina Bouianov"
    ],
    "categories": [
      "physics.ins-det"
    ],
    "doi": "10.1016/j.nima.2005.02.042",
    "journal_ref": "Nucl.Instrum.Meth. A546 (2005) 457-465",
    "title": "Simulation study of electron drift and gas multiplication in Micro Pixel   Chamber",
    "url": "https://arxiv.org/abs/physics/0503223"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "50392881-ec36-44a5-b940-2282fd80add8",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}