Coupling of a BaF sub 2 Scintillator to a TMAE Photocathode and a Low-Pressure Wire Chamber

摘要

The short wavelength component of a BaF sub 2 scintillator has been successfully coupled to a tetrakis(dimethylamine)ethylene (TMAE) photocathode and a low-pressure wire chamber. An energy resolution of 28.5% FWHM has been measured for protons losing about 18 MeV in the crystal. A timing resolution of 540 ps FWHM has been measured for 350 MeV alpha -particles. We foresee a new generation of calorimeters with good spatial, temporal, and energy resolution, able to work at high rates. Other possible applications are also discussed. (ERA citation 10:028586)