%0 Journal Article
%A Kemmerling, G.
%A Engels, R.
%A Bussmann, N.
%A Clemens, U.
%A Heiderich, M.
%A Reinartz, R.
%A Rongen, H.
%A Schelten, J.
%A Schwan, D.
%A Zwoll, K.
%T A new two-dimensional scintillation detector system for small angle neutron scattering experiments
%J IEEE transactions on nuclear science
%V 48
%@ 0018-9499
%C New York, NY
%I IEEE
%M PreJuSER-40102
%P 1114
%D 2001
%Z Record converted from VDB: 12.11.2012
%X A new two-dimensional position-sensitive detector system for small-angle neutron scattering experiments is under development. It is based on a 60 x 60 cm(2) large Li-6-glass scintillator for the neutron capture and dispersion of the emitted light on an array of photomultiplier tubes for the derivation of the event position. For subthermal neutrons of 8 Angstrom, an efficiency of 96% and a spatial resolution of 8 mm are to be achieved. Major improvements have been made in the signal- and data-processing branch, which aims at an electronical dead time of 1 mus. A fast digitalization method using free-running analog-to-digital converters for each photomultiplier combined with field-programmable gate arrays for a parallel event detection in all channels has been applied. A subsequent farm of up to 16 floating-point digital signal processors is used to provide enough computing power for an improved reconstruction of the event position according to a maximum likelihood method.
%K J (WoSType)
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000171660300031
%R 10.1109/23.958733
%U https://juser.fz-juelich.de/record/40102