{
  "annotation_id": "2c1d6716-b5e5-4074-923e-1ea57935dd25",
  "date_created": "2026-03-02T18:01:11.489000Z",
  "date_modified": "2026-03-02T18:01:11.489000Z",
  "file_hash": "549395c3db5ee488c897f8dce65fa56c2b3aa1b4c05fd1dbb03d934017b8dd95",
  "private": false,
  "record": {
    "abstract": "A new concept is presented for the reduction of ion back-flow in GEM-based\ncascaded gaseous electron multipliers, by incorporating Micro-Hole \u0026 Strip\nPlate (MHSP) elements operating in reversed-bias mode (R-MHSP). About an order\nof magnitude reduction in ion back-flow is achieved by diverting back-drifting\nions from their original path. A R-MHSP/2GEM/MHSP cascaded multiplier operated\nat total gain of ~1.5*10^5 yielded ion back-flow fractions of 0.0015 and\n0.0004, at drift fields of 0.5 and 0.1 kV/cm, respectively. A 2R-MHSP/MHSP\ncascaded multiplier operated at a total gain of ~10^5, yielded an ion back-flow\nfraction of 0.003. We discuss the concept for trapping back-flowing ions in\nthese cascaded multipliers and the relevance to gaseous photomultiplier and TPC\napplications; directions for further future developments are outlined.",
    "arxiv_id": "physics/0607015",
    "authors": [
      "A. V. Lyashenko",
      "A. Breskin",
      "R. Chechik",
      "J. F. C. A. Veloso",
      "J. M. F. Dos Santos",
      "F. D. Amaro"
    ],
    "categories": [
      "physics.ins-det"
    ],
    "doi": "10.1088/1748-0221/1/10/P10004",
    "journal_ref": "2006 JINST 1 P10004",
    "title": "Advances in ion back-flow reduction in cascaded gaseous electron   multipliers incorporating R-MHSP elements",
    "url": "https://arxiv.org/abs/physics/0607015"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "3e3beb3b-92e0-4629-aeb1-0da824d7981c",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}