Title :
Readout of undoped CsI crystals using wavelength shifting scintillating fibers and bars
Author :
Woody, C.L. ; Stol, S.P. ; Frank, J.
Author_Institution :
Brookhaven Nat. Lab., Upton, NY, USA
Abstract :
An investigation has been made of a readout technique for undoped cesium iodide crystals using wavelength shifting scintillating fibers and bars. The goals were to maximize the light output from the wavelength shifters in order to provide a convenient and cost effective means to read out very large crystal arrays with sufficient efficiency to operate in the energy range of ≲1 MeV. The method also provides a means for reading out crystals which may be located inside a magnetic field. A study is made for various types of fibers (BCF-10, BCF-12 and BCF-20) giving the dependence of the light output on fluor type, fiber diameter and the spacing between fibers. Similar studies are made for several types of bars (BC-404 and BC-408) which compare the light output for various bar thicknesses and fluor concentrations
Keywords :
caesium compounds; solid scintillation detectors; BC-404; BC-408; BCF-10; BCF-12; BCF-20; CsI; bar thicknesses; fiber diameter; fluor concentrations; fluor type; readout technique; undoped CsI crystals; very large crystal arrays; wavelength shifting scintillating bars; wavelength shifting scintillating fibers; Absorption; Bars; Costs; Crystals; Laboratories; Optical arrays; Optical coupling; Optical fiber testing; Photoelectricity; Plastics;
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference, 1994., 1994 IEEE Conference Record
Print_ISBN :
0-7803-2544-3
DOI :
10.1109/NSSMIC.1994.474341
