Abstract
The design and the problem of light collection from large-area scintillation counters are discussed. A new method of light collection, suggested by Shurcliff and independently by Garwin, is employed to collect the light from a large-area scintillation counter. It is shown that, employing this method of light collection and two RCA 5819 photomultipliers, the response of a scintillation counter of area 100 × 35 cm 2, is uniform to within 10% except in the corners near the photomultipliers where the average pulse height increases to about 30% above the value near the centre of the scintillation counter. The design presented in this paper suggests that reasonable uniformity can be obtained in a scintillation counter having an area of 1 m 2 employing three RCA 5819 photomultipliers.
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