学术报告（3月7日）

主持人：王为 教授

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摘要：We measure the reactor neutrino energy spectrum generated in the Daya Bay Nuclear Power Station including high energy (E>8.78MeV) for the first time. Disagreements between data and theory regarding rate and shape of reactor neutrino spectra have made the need for direct measurement clear. Data are especially useful at high energies, where far fewer isotopes contribute. Neutrino candidates are correlated to reactor power and reactor power is extrapolated to zero in order to separate neutrino events from background. We find evidence of reactor neutrinos up to 12.28 MeV at 2.05-sigma confidence level.

报告人简历：Mr. Neill Raper started his physics education at Rensselaer Polytechnic Institute as an undergraduate. He continued to study at RPI as a graduate student working with Jim Napolitano on the Daya Bay Reactor Neutrino Experiment. Neill worked primarily on the water purification system. After two years working on the water system, he transferred to data analysis for his thesis topic which aims to measure the high energy tail of the reactor neutrino spectrum.