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matching trigger that searches through incoming waveforms in real time, constantly looking for specific signals that researchers suspect are from high-energy neutrinos. Operating at two gigahertz, this chip has far greater timing stability than any previous generation, and its smart trigger promotes high efficiency in capturing neutrino signals and rejecting noise.
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2013 Dean’s Report
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The ARIANNA research project tri eu is in its early stage, with just four n s• no detector stations installed thus far. tri u e •n Ultimately, the project will include s o Top: The communications rin ut more than 900 detectors spread e tower with two• antennas n os – one fortrsatellite and across the 182,000 square-mile Ross in u one for• nelong-distance Ice Shelf. os wireless. rin The poles with t eu Kleinfelder says that once fully • n green flags indicate os implemented, ARIANNA will cover rt in where the neutrinou ne detection antennas are • more mass than any other current s no buried deep into the ice. tri u neutrino detection experiment. ne The power tower topped s• o This, he hopes, will increase their n with a wind turbine sits tri eu n chances of catching extremely rare in the background. • os rin and energetic neutrinos that are t eu •n s coming from powerful supernovae, o rin ut the galactic core and elsewhere. He is ne Bottom: The heart • s optimistic. of each station is the instrumentation box, “ARIANNA seeks understanding which contains the of some of the last deep mysteries custom electronics in particle astrophysics. Both technology that sifts through the noise and personally and professionally, it’s a captures potential radio grand adventure. With this project, frequency signals from we are the next generation of polar cosmic neutrinos. Each explorers, literally traveling to the instrumentation box is ends of the earth to touch the stars!” protected in plastic.
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no The stations all have wireless and tri eu n • satellite communications capability. os rin ut The digital data is sent via long-range e •n os wireless to Antarctica’s McMurdo rin t eu Station and then via satellite •n os n i r communications to a computer at ut ne UCI. The stations are primarily solarinos • r powered, with wind power and a• neut s no battery as backup. The key to utheir tri e n • design is that they rely on very little os rin power – in Antarctica, there is no ut e •n os of winter sun during six months rin t eu and intermittents winds. The stations •n o n i r are the first high-performance t eu •n instrumentation to survive os n i r ut autonomous operation in desolate, e n s• crueltrinoAntarctic conditions. s no
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