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We have evaluated the performance of a prototype 16-channel avalanche photodiode (APD) array developed primarily for scintillating-fiber (SCIFI) tracking detectors. The APD array was coupled to a 2.5m long SCIFI array, and the detection efficiency was measured for minimum ionizing particles passing through the SCIFI array. The APD array was cooled to °C to improve the ratio. We have found that the APD array can read out each individual SCIFI with sufficiently high efficiency. [Copyright &y& Elsevier]