An optical fiber readout for scintillator calorimeters

Abstract

A method is described for collecting light from scintillation-counter calorimeters by means of an optical fiber connected to a wavelength shifter, covering an edge of a scintillator plate. The optical fiber passes between the continuous metallic plates and guides the light to a photomultiplier. The measurements with a prototype electromagnetic calorimeter give the energy resolution 8% (fwhm) at 26 GeV electron energy and uniformity across the surface of the calorimeter ±6%. The proposed method has a number of new advantages. © 1986.