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Ettore Segreto


Universidade Estadual de Campinas (UNICAMP). Instituto de Física Gleb Wataghin (IFGW)  (Institutional affiliation from the last research proposal)
Birthplace: Itália

doctorate at Fisica from Università degli Studi dell'Aquila (2006). Has experience in Physics, focusing on Physics of Elementary Particles and Fields (Source: Lattes Curriculum)

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The Deep Underground Neutrino Experiment: Photon Detection System and ARAPUCA device

Published by Agência FAPESP - February 11, 2019. One of the most important experimental programmes that will address some of the open questions in neutrino physics is the Deep Underground Neutrino Experiment (DUNE). It will be the first megascience project on the US sole, that actually involves more than 1000 physicists. It will allow to shade light, for example, on the mass hierarchy of neutrino masses and on the Charge-Parity symmetry violation in the leptonic sector, which can contribute to solve the puzzle of the matter/antimatter asymmetry in the Universe. The DUNE foresees the realization of a neutrino beam and of a near detector, both located at Fermilab (USA) and of a gigantic far detector based on the technology of liquid argon time projection chambers that will be installed at the Sanford Underground Research Facility in South Dakota, 1300 km faraway. Furthermore, the huge active mass of the far detector will allow to develop a rich program of non accelerator physics that includes the search for proton decay, the detection of supernova neutrinos and of atmospheric neutrinos. The photon detection system is an important component of the far detector, which will be used for timing, triggering and to improve the energy resolution of the detector for low energy interactions. Its baseline design is based on a device totally conceived in Brazil, the ARAPUCA. Its operating principle is based on the combination of active silicon photon sensors with a passive collector. The latter allows to increase the effective detection efficiency of the active sensors by trapping the photons inside an highly reflective box. The Brazilian effort in developing and designing the Photon Detection System of the DUNE experiment will be illustrated. Ettore Segreto | FAPESP Week London.
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