该探测器设在一个3300英尺深的地下废弃矿井的底部，主体是一个1200万加仑容积的水箱，周边安置有11000个光传感器。
The detector is housed in a 12 million gallon tank of water surrounded by 11,000 light sensors, at the bottom of an abandoned mine 3300 feet underground.
要实现对单细胞的光学检测，需容积小、光学收集效率高、低噪声的检测器和低的背景光。
To achieve the optic detection in individual cell, it is prerequisite for optical detector to be tiny volume, highly optical collection - efficiency, low noise and light background.
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