Francis Halzen initiated IceCube, using a large volume of Antarctic ice as a medium for neutrino detection. Optical modules record Cherenkov radiation from secondary charged particles. Their arrival times and detected light allow reconstruction of a particle's direction and deposited energy. Because atmospheric particles also produce signals, identifying cosmic neutrinos requires event selection and explicit background estimates. The instrument connects high-energy particle with observations of distant astrophysical sources.[ref]
The IceCube Neutrino Observatory: Instrumentation and Online Systems by IceCube Collaboration. Sections 1–2: instrument layout, optical modules and functional detection description
A physicist who initiated IceCube and researched particle, astrophysics and cosmology.[ref]
Professional profile of Francis Halzen (physics.wisc.edu). Biography: physics faculty since 1972; IceCube principal investigator
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Portrait of Francis Halzen
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Francis Halzen is a prominent physicist known for his work in the field of particle astrophysics and neutrino physics. He is a professor at the University of Wisconsin-Madison and has been a key figure in the IceCube Neutrino Observatory project, which is designed to detect high-energy neutrinos originating from astronomical sources. Halzen's research has contributed significantly to our understanding of fundamental particles and their interactions, particularly in the context of cosmic phenomena.