يعرض 1 - 3 نتائج من 3 نتيجة بحث عن '"Finetti, N."', وقت الاستعلام: 0.84s تنقيح النتائج
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    دورية أكاديمية
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    المساهمون: Maria Giuseppina Bisogni, Marco Grassi, Marco Incagli, Riccardo Paoletti and Giovanni Signorelli, D'Alessandro, R., Adriani, O., Agnesi, A., Albergo, S., Auditore, L., Basti, A., Berti, E., Bigongiari, G., Bonechi, L., Bonechi, S., Bongi, M., Bonvicini, V., Bottai, S., Brogi, P., Carotenuto, G., Castellini, G., Cattaneo, P. W., Cauz, D., Chiari, M., Daddi, N., Detti, S., Fasoli, M., Finetti, N., Gregorio, Anna, Lenzi, P., Maestro, P., Marrocchesi, P. S., Miritello, M., Mori, N., Pacini, L., Papini, P., Pauletta, G., Pirzio, F., Rappazzo, G. F., Rappoldi, A., Ricciarini, S., Santi, L. G., Spillantini, P., Starodubtsev, O., Suh, J. E., Sulaj, A., Tiberio, A., Tricomi, A., Trifiro, A., Trimarchi, M., Vannuccini, E., Vedda, A., Zampa, Gianluigi, Zampa, Nicola, Zerbo, B., D'Alessandro, R, Adriani, O, Agnesi, A, Albergo, S, Auditore, L, Basti, A, Berti, E, Bigongiari, G, Bonechi, L, Bonechi, S, Bongi, M, Bonvicini, V, Bottai, S, Brogi, P, Carotenuto, G, Castellini, G, Cattaneo, P, Cauz, D, Chiari, M, Daddi, N, Detti, S, Fasoli, M, Finetti, N, Gregorio, A, Lenzi, P, Maestro, P, Marrocchesi, P, Miritello, M, Mori, N, Pacini, L, Papini, P, Pauletta, G, Pirzio, F, Rappazzo, G, Rappoldi, A, Ricciarini, S, Santi, L, Spillantini, P, Starodubtsev, O, Suh, J, Sulaj, A, Tiberio, A, Tricomi, A, Trifiro, A, Trimarchi, M, Vannuccini, E, Vedda, A, Zampa, G, Zampa, N, Zerbo, B

    الوصف: Future research in High Energy Cosmic Ray Physics concerns fundamental questions on their origin, acceleration mechanism, and composition. Unambiguous measurements of the energy spectra and of the composition of cosmic rays at the “knee” region could provide some of the answers to the above questions. Only ground based observations, which rely on sophisticated models describing high energy interactions in the earth׳s atmosphere, have been possible so far due to the extremely low particle rates at these energies. A calorimeter based space experiment can provide not only flux measurements but also energy spectra and particle identification, especially when coupled to a dE/dx measuring detector, and thus overcome some of the limitations plaguing ground based experiments. For this to be possible very large acceptances are needed if enough statistic is to be collected in a reasonable time. This contrasts with the lightness and compactness requirements for space based experiments. A novel idea in calorimetry is discussed here which addresses these issues while limiting the mass and volume of the detector. In fact a small prototype is currently being built and tested with ions. In this paper the results obtained will be presented in light of the simulations performed.

    وصف الملف: STAMPA

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    المساهمون: Bigongiari, G, Adriani, O, Albergo, S, Ambrosi, G, Auditore, L, Basti, A, Berti, E, Bonechi, L, Bonechi, S, Bongi, M, Bonvicini, V, Bottai, S, Brogi, P, Cappello, G, Cattaneo, P, D'Alessandro, R, Detti, S, Duranti, M, Fasoli, M, Finetti, N, Formato, V, Ionica, M, Italiano, A, Lenzi, P, Maestro, P, Marrocchesi, P, Mori, N, Orzan, G, Olmi, M, Pacini, L, Papini, P, Pellegriti, M, Rappoldi, A, Ricciarini, S, Sciuto, A, Silvestre, G, Starodubtsev, O, Stolzi, F, Suh, J, Sulaj, A, Tiberio, A, Tricomi, A, Trifiro, A, Trimarchi, M, Vannuccini, E, Vedda, A, Zampa, G, Zampa, N

    المصدر: Universe, Vol 5, Iss 3, p 72 (2019)
    Universe
    Volume 5
    Issue 3
    Universe (Basel) 5 (2019). doi:10.3390/universe5030072
    info:cnr-pdr/source/autori:Bigongiari G.; Adriani O.; Albergo S.; Ambrosi G.; Auditore L.; Basti A.; Berti E.; Bonechi L.; Bonechi S.; Bongi M.; Bonvicini V.; Bottai S.; Brogi P.; Cappello G.; Cattaneo P.W.; D'Alessandro R.; Detti S.; Duranti M.; Fasoli M.; Finetti N.; Formato V.; Ionica M.; Italiano A.; Lenzi P.; Maestro P.; Marrocchesi P.S.; Mori N.; Orzan G.; Olmi M.; Pacini L.; Papini P.; Pellegriti M.G.; Rappoldi A.; Ricciarini S.B.; Sciuto A.; Silvestre G.; Starodubtsev O.; Stolzi F.; Suh J.E.; Sulaj A.; Tiberio A.; Tricomi A.; Trifiro A.; Trimarchi M.; Vannuccini E.; Vedda A.; Zampa G.; Zampa N./titolo:A new approach to calorimetry in space-based experiments for high-energy cosmic rays/doi:10.3390%2Funiverse5030072/rivista:Universe (Basel)/anno:2019/pagina_da:/pagina_a:/intervallo_pagine:/volume:5

    الوصف: Precise measurements of the energy spectra and of the composition of cosmic rays in the PeV region could improve our knowledge regarding their origin, acceleration mechanism, propagation, and composition. At the present time, spectral measurements in this region are mainly derived from data collected by ground-based detectors, because of the very low particle rates at these energies. Unfortunately, these results are affected by the high uncertainties typical of indirect measurements, which depend on the complicated modeling of the interaction of the primary particle with the atmosphere. A space experiment dedicated to measurements in this energy region has to achieve a balance between the requirements of lightness and compactness, with that of a large acceptance to cope with the low particle rates. CaloCube is a four-year-old R&
    D project, approved and financed by the Istituto Nazionale di Fisica Nucleare (INFN) in 2014, aiming to optimize the design of a space-borne calorimeter. The large acceptance needed is obtained by maximizing the number of entrance windows, while thanks to its homogeneity and high segmentation this new detector achieves an excellent energy resolution and an enhanced separation power between hadrons and electrons. In order to optimize detector performances with respect to the total mass of the apparatus, comparative studies on different scintillating materials, different sizes of crystals, and different spacings among them have been performed making use of MonteCarlo simulations. In parallel to simulations studies, several prototypes instrumented with CsI(Tl) (Caesium Iodide, Tallium doped) cubic crystals have been constructed and tested with particle beams. Moreover, the last development of CaloCube, the Tracker-In-Calorimeter (TIC) project, financed by the INFN in 2018, is focused on the feasibility of including several silicon layers at different depths in the calorimeter in order to reconstruct the particle direction. In fact, an important requirement for &gamma
    ray astronomy is to have a good angular resolution in order to allow precise identification of astrophysical sources in space. In respect to the traditional approach of using a tracker with passive material in front of the calorimeter, the TIC solution can save a significant amount of mass budget in a space satellite experiment, which can then be exploited to improve the acceptance and the resolution of the calorimeter. In this paper, the status of the project and perspectives for future developments are presented.

    وصف الملف: STAMPA; application/pdf