Digital optical module
ID: digital-optical-module
A glass-enclosed photomultiplier with local digitization: pulse times and charges enter event reconstruction. Reciprocal electrical pulses synchronize module clocks to the surface time base.[ref]
The IceCube Neutrino Observatory: Instrumentation and Online Systems by IceCube Collaboration. Sections 2.1, 3.3: module and reciprocal timing
Weak charged current interactions of muon neutrinos usually give extended muon tracks. Compact particle showers occur in other channels, including weak neutral current interactions of every neutrino flavor. Tracks generally constrain direction better; escaping particles complicate energy inference.[ref]
The IceCube Neutrino Observatory: Instrumentation and Online Systems by IceCube Collaboration. Section 1.1.1: tracks and showers
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