Development of two-dimensional scintillator neutron detector using wavelength-shifting fibres; Development of a compact detector for iBIX instrument in J-PARC/MLF
Nakamura, Tatsuya
; Katagiri, Masaki; Hosoya, Takaaki*; Birumachi, Atsushi; Ebine, Masumi
; Soyama, Kazuhiko
; Schooneveld, E.*; Rhodes, N.*
A compact two-dimensional neutron detector was developed for iBIX instrument in the J-PARC/MLF. The specifications required for the detector were a spatial resolution of less than 1 mm, a detector efficiency of more than 50% for thermal neutrons, a
sensitivity of less than 10
, detector coverage of around 15
15 cm
with least dead area, compactness, modularity, and a pulse pair resolution of less than 2
s. The detector components were studied in detail and optimized for the purpose. The compact prototype detector that has a neutron sensitive area of 13.3
13.3 cm
was made and feasibility of the detector was demonstrated successfully in the experiments at the ISIS pulsed neutron source.