Development of a cold-neutron imaging detector based on thick gaseous electron multiplier

M. Cortesi, R. Zboray, A. Kaestner, H. M. Prasser

    Research output: Contribution to journalArticle

    3 Scopus citations

    Abstract

    We present the results of our recent studies on a cold-neutron imaging detector prototype based on THick Gaseous Electron Multiplier (THGEM). The detector consists of a thin Boron layer, for neutron-to-charged particle conversion, coupled to two THGEM electrodes in cascade for charge amplification and a position-sensitive charge-readout anode. The detector operates in Ne/(5%)CF4, at atmospheric pressure, in a stable condition at a gain of around 104. Due to the geometrical structure of the detector elements (THGEM geometry and charge read-out anode), the image of detector active area shows a large inhomogeneity, corrected using a dedicated flat-filed correction algorithm. The prototype provides a detection efficiency of 5% and an effective spatial resolution of the order of 1.3 mm.

    Original languageEnglish (US)
    Article number023305
    JournalReview of Scientific Instruments
    Volume84
    Issue number2
    DOIs
    StatePublished - Feb 1 2013

    All Science Journal Classification (ASJC) codes

    • Instrumentation

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