{
  "annotation_id": "73abaac1-ceed-41a0-aca9-fe415a8813a1",
  "date_created": "2026-03-02T18:00:53.678000Z",
  "date_modified": "2026-03-02T18:00:53.678000Z",
  "file_hash": "daa699cbb45723745e13f3f7476612d5ef3399ed6343be32cc2db17092728a18",
  "private": false,
  "record": {
    "abstract": "The Basic Ecological Observatory (BEO) Moussala is located at 2925m above sea\nlevel and one of the main activities is connected with gamma background and\nneutron dose rate monitoring. The neutron and gamma measurements are carried\nout with help of site radiation monitor Harwell Type 3208-1. The dose rate of\nambient gamma background is measured with SBN-90, improved with the embedded\nmicroprocessor system using automatic PC based system. A cross check and inter\ncalibration with existing TLD (thermo luminescent dosimeters) at BEO Moussala\nwhich is a part of the monitoring network of INRNE is presented. A polyethylene\nsphere with a layer of lead serving as a neutron breeder, extending the energy\nrange from about 40 MeV to several hundred MeV is presented as a project in\ndevelopment. Another project in development is the construction of active\ndetector based on SNM-15 detectors for a dose rate measurement of cosmic\nneutrons is described. Preliminary study of the performances of the detectors\nare carried out. A further project for muonic telescope similar to the yet\ndeveloped is discussed.",
    "arxiv_id": "physics/0409063",
    "authors": [
      "Y. Dimov",
      "M. Guelev",
      "L. Hristov",
      "P. Ivanov",
      "A. Mishev",
      "A. Nishev",
      "J. Stamenov",
      "B. Vachev"
    ],
    "categories": [
      "physics.ins-det"
    ],
    "title": "Gamma background and neutron flux measurements at Basic Ecological   Observatory Moussala",
    "url": "https://arxiv.org/abs/physics/0409063"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "b2589ab7-5ead-40b3-b540-ee5542fc0119",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}