Abstract
Three total absorption shower cascade detectors, consisting of blocks of cadmium fluoride, lead fluoride and lead glass of similar dimensions viewed by photomultipliers, have been investigated up to 3.5 GeV on the test beam at Daresbury Nuclear Physics Laboratory. At 1 GeV the energy resolution of the cadmium fluoride detector was found to be 19% (fwhm) compared with 34% for the other two. This superior resolution arises from the fact that the response of cadmium fluoride is mainly due to scintillation compared with the pure Cherenkov response of the other two detectors. However, above 1 GeV the Cherenkov detectors exhibit a more linear variation of pulse height with energy.
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