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Opera

Superluminal Neutrinos, Take Two 98

Coisiche writes "To address the many responses to their original findings, the OPERA team who reported the detection of faster-than-light neutrinos is starting a new and improved version of their experiment. 'The neutrinos that emerge at Gran Sasso start off as a beam of proton particles at CERN. Through a series of complex interactions, neutrino particles are generated from this beam and stream through the Earth's crust to Italy. Originally, CERN fired the protons in a long pulse lasting 10 microseconds (10 millionths of a second). ... [In the new experiment], protons are sent in a series of short bursts — lasting just one or two nanoseconds, thousands of times shorter — with a large gap (roughly 500 nanoseconds) in between each burst. This system, says Dr Bertolucci, is more efficient: "For every neutrino event at Gran Sasso, you can connect it unambiguously with the batch of protons at CERN," he explained.'"

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