TY  - JOUR
AU  - Kemmerling, G.
AU  - Engels, R.
AU  - Bussmann, N.
AU  - Clemens, U.
AU  - Heiderich, M.
AU  - Reinartz, R.
AU  - Rongen, H.
AU  - Schelten, J.
AU  - Schwan, D.
AU  - Zwoll, K.
TI  - A new two-dimensional scintillation detector system for small angle neutron scattering experiments
JO  - IEEE transactions on nuclear science
VL  - 48
SN  - 0018-9499
CY  - New York, NY
PB  - IEEE
M1  - PreJuSER-40102
SP  - 1114
PY  - 2001
N1  - Record converted from VDB: 12.11.2012
AB  - 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.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000171660300031
DO  - DOI:10.1109/23.958733
UR  - https://juser.fz-juelich.de/record/40102
ER  -