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Predicted WEPL resolution for a four-stage detector composed of stages fitting 1, 2, 3, and 4 in. PMTs (a) and for a three-stage detector fitting two 3 in. and one 4 in. PMTs (b) as a function of WEPL. The required intrinsic resolutions δE of the stages are listed in the legends. Dotted lines show WEPL resolution margins corresponding to ±0.5% variation of the δE value.
