ATWD: Digital Optical Module

The second generation "smart" optical module for neutrino astronomy, incorporating a local CPU and a special chip called the ATWD (analog transient waveform digitizer).
(ATWR Concept) This is the next step following the (DOM) Wave form for a 4 nanosecond wide fast rise time pulse from the ATWD chip.

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by George Smoot June 1998.