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 language | English (US) |
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Article number | 023305 |
Journal | Review of Scientific Instruments |
Volume | 84 |
Issue number | 2 |
DOIs | |
State | Published - Feb 2013 |
All Science Journal Classification (ASJC) codes
- Instrumentation