• DocumentCode
    1138457
  • Title

    Attempt to correlate the ionic model with observations in BaBar RPC chambers and R&D tests

  • Author

    Va´Vra, J.

  • Author_Institution
    Stanford Linear Accel. Center, CA, USA
  • Volume
    51
  • Issue
    5
  • fYear
    2004
  • Firstpage
    2145
  • Lastpage
    2150
  • Abstract
    The paper presents a model of ionic conduction in the Bakelite-based RPC detectors. This model explains why these detectors need to add water while they operate. The electrode current, according to the presented model, is formed mainly by the ionic sequence involving the phenol impurities left in the Bakelite and water, both left from the initial production. Similar ionic process is present in the Linseed oil polymer, where the current is carried by the fatty acid molecular impurities and by water. The Bakelite RPC operation requires the entire ionic sequence to operate smoothly to keep the electrode resistance constant.
  • Keywords
    electrodes; ionic conductivity; organic compounds; position sensitive particle detectors; resistors; streamer chambers; vegetable oils; water; BaBar RPC chambers; R&D tests; bakelite-based RPC detectors; electrode current; electrode resistance constant; fatty acid molecular impurities; ionic conduction model; ionic sequence; linseed oil polymer; linseed oil-covered bakelite electrodes; phenol impurities; streamer mode; water; Conductivity; Detectors; Electrodes; Impurities; Petroleum; Polymers; Production; Research and development; Testing; Voltage; RPC detectors based on linseed oil-covered Bakelite electrodes;
  • fLanguage
    English
  • Journal_Title
    Nuclear Science, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9499
  • Type

    jour

  • DOI
    10.1109/TNS.2004.836063
  • Filename
    1344299