Mostrando 1 - 19 Resultados de 19 Para Buscar 'Gago A.M.', tiempo de consulta: 0.05s Limitar resultados
1
capítulo de libro
COVID-19 : catalizador de las universidades de investigación en el Perú
Publicado por
Gago, A.M.
Publicado 2021 Enlace
Páginas 195-200
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2
capítulo de libro
La importancia de las humanidades en la formación de un científico
Publicado por
Gago, A.M.
Publicado 2019 Enlace
Páginas 146-150
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3
artículo
Effects of the violation of the equivalence principle at DUNE
Publicado por
Díaz F.N., Hoefken J., Gago A.M.
Publicado 2020 Enlace
A number of different effects of the violation of the equivalence principle (VEP), taken as subleading mechanism of neutrino flavor oscillation, are examined within the framework of the DUNE experiment. We study the possibility of obtaining a misleading neutrino oscillation parameter region caused by our unawareness of VEP. Additionally, we evaluate the impact on the measurement of CP violation and the distinction of neutrino mass hierarchy at DUNE. Besides, limits on VEP for a wide variety of textures of the matrix that connects neutrino gravity eigenstates to flavor eigenstates are imposed. An extra task of our study is to set limits on Hamiltonian added terms considering different energy dependencies (Ed-3, with d=3, 4, 5, 6) that can be associated to the usual Lorentz violating terms defined in the Standard Model extension Hamiltonian. In order to understand our results, approximated...
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4
artículo
Particle detection performance and Geant4 simulation with low-cost CMOS technology
Publicado por
Bonnett Del Alamo, M., Helaconde, R., Soncco, C., Bazo, José, Gago, A.M.
Publicado 2025 Enlace
We evaluate the performance of an Omnivision OV5647 CMOS image sensor (5 Mp) for detecting radiation from Sr90 and Cs137 sources. Our experimental setup uses a Raspberry Pi 3 mini-computer for data acquisition, with image processing using Python and OpenCV libraries. We specify the necessary settings to convert a standard camera into a particle detector sensitive to electrons and photons, including a two-step background filtering procedure. In addition, we implement the first detailed Geant4 simulation that describes the layered geometry and material composition of a commercial CMOS sensor along with the radioactive sources. To enhance the simulation, we include an algorithm for charge diffusion and conversion of the energy deposited by electrons and photons into ADC counts. Our measurements are presented in terms of cluster size, the maximum ADC signal per cluster, and the number of clu...
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5
artículo
Matter effects in neutrino visible decay at future long-baseline experiments
Publicado por
Ascencio-Sosa M.V., Calatayud-Cadenillas A.M., Gago A.M., Jones-Pérez J.
Publicado 2018 Enlace
A.M.G. and J.J.P. acknowledge funding by the Dirección de Gestión de la Investigación at PUCP, through grant DGI-2015-3-0026. M.V.A.S. acknowledges funding by CienciActiva-CONCYTEC Grants 026-2015 and CONV-236-2015-FONDECYT. A.M.C.C. received funding from CienciActiva-CONCYTEC Grant 233-2015-1. We would like to thank F. Díaz-Desposorio for his help with the GLoBES implementation, and O. A. Díaz in the Dirección de Tecnologías de Información for support within the LEGION system.
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6
artículo
Laser spot measurement using simple devices
Publicado por
Bonnett Del Alamo M., Soncco C., Helaconde R., Bazo Alba J.L., Gago A.M.
Publicado 2021 Enlace
The authors gratefully acknowledge the Dirección de Gestión de la Investigación (DGI-PUCP) for funding under Grant No. DGI-2019-3-0044. C.S. acknowledges support from the Peruvian National Council for Science, Technology and Technological Innovation scholarship under Grant No. 236-2015-FONDECyT. We would also wish to thank R. Sanchez from the Applied Optics Group and the Quantum Optics Group for letting us use their lasers and equipment, as well as Y. Coello for the photodiode. We also thank J. A. Guerra for useful discussions and suggestions.
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7
artículo
Testing FLUKA on neutron activation of Si and Ge at nuclear research reactor using gamma spectroscopy
Publicado por
Bazo J., Rojas J.M., Best S., Bruna R., Endress E., Mendoza P., Poma V., Gago A.M.
Publicado 2018 Enlace
The authors gratefully acknowledge DGI-PUCP for financial sup-port under Grants No. DGI-2015-192 and DGI-2017-3-0019, as wellas CONCYTEC under Grant No. FONDECYT-2013-102. The authorswish to thank the FLUKA scientific committee for useful commentsand suggestions, Jose Fernandes and Francisco Rumiche for the SEMmeasurements and Jorge Andrés Guerra, Patrizia Pereyra and DanielPalacios for useful discussions.
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8
artículo
Arachne-A web-based event viewer for MINERνA
Publicado por
Tagg N., Brangham J., Chvojka J., Clairemont M., Day M., Eberly B., Felix J., Fields L., Gago A.M., Gran R., Harris D.A., Kordosky M., Lee H., Maggi G., Maher E., Mann W.A., Marshall C.M., McFarland K.S., McGowan A.M., Mislivec A., Mousseau J., Osmanov B., Osta J., Paolone V., Perdue G., Ransome R.D., Ray H., Schellman H., Schmitz D.W., Simon C., Solano Salinas C.J., Tice B.G., Walding J., Walton T., Wolcott J., Zhang D., Ziemer B.P.
Publicado 2012 Enlace
Neutrino interaction events in the MINERνA detector are visually represented with a web-based tool called Arachne. Data are retrieved from a central server via AJAX, and client-side JavaScript draws images into the users browser window using the draft HTML 5 "standard". These technologies allow neutrino interactions to be viewed by anyone with a web browser, allowing for easy hand-scanning of particle interactions. Arachne has been used in MINERνA to evaluate neutrino data in a prototype detector, to tune reconstruction algorithms, and for public outreach and education. © 2012 Published by Elsevier B.V.
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9
artículo
Reducing model bias in a deep learning classifier using domain adversarial neural networks in the MINERvA experiment
Publicado por
Nuruzzaman, Perdue G.N., Ghosh A., Wospakrik M., Akbar F., Andrade D.A., Ascencio M., Bellantoni L., Bercellie A., Betancourt M., Vera G.F.R.C., Cai T., Carneiro M.F., Chaves J., Coplowe D., Motta H.D., Díaz G.A., Felix J., Fields L., Fine R., Gago A.M., Galindo R., Golan T., Gran R., Han J.Y., Harris D.A., Jena D., Kleykamp J., Kordosky M., Lu X.-G., Maher E., Mann W.A., Marshall C.M., McFarland K.S., McGowan A.M., Messerly B., Miller J., Nelson J.K., Nguyen C., Norrick A., Nuruzzaman N., Olivier A., Patton R., Ramírez M.A., Ransome R.D., Ray H., Ren L., Rimal D., Ruterbories D., Schellman H., Salinas C.J.S., Su H., Upadhyay S., Valencia E., Wolcott J., Yaeggy B., Young S.
Publicado 2018 Enlace
Construction support also was granted by the United States National Science Foundation under Award PHY-0619727 and by the University of Rochester. Additional support for participating scientists was provided by NSF and DOE (U.S.A.) by CAPES and CNPq (Brazil), by CoNaCyT (Mexico), by Proyecto Basal FB 0821, CONICYT PIA ACT1413, Fondecyt 3170845 and 11130133 (Chile), by PIIC (DGIP-UTFSM), by CONCYTEC, DGI-PUCP and IDI/IGI-UNI (Peru)
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10
artículo
Measurement of νμ charged-current single π0 production on hydrocarbon in the few-GeV region using MINERvA
Publicado por
Altinok O., Le T., Aliaga L., Bellantoni L., Bercellie A., Betancourt M., Bodek A., Bravar A., Budd H., Caceres Vera G.F.R., Cai T., Carneiro M.F., Da Motta H., Dytman S.A., Díaz G.A., Felix J., Fields L., Fine R., Gago A.M., Galindo R., Gallagher H., Ghosh A., Gran R., Han J.Y., Harris D.A., Kleykamp J., Kordosky M., Maher E., Manly S., Mann W.A., Marshall C.M., Martinez Caicedo D.A., McFarland K.S., McGowan A.M., Messerly B., Miller J., Mislivec A., Morfín J.G., Naples D., Nelson J.K., Norrick A., Nuruzzaman, Paolone V., Patrick C.E., Perdue G.N., Ramirez M.A., Ransome R.D., Ray H., Ren L., Rimal D., Rodrigues P.A., Ruterbories D., Schellman H., Sobczyk J.T., Solano Salinas C.J., Sultana M., Sánchez Falero S., Valencia E., Wolcott J., Yaeggy B.
Publicado 2017 Enlace
The semiexclusive channel νμ þ CH → μ−π0 þ nucleonðsÞ is analyzed using MINERvA exposed to the low-energy NuMI νμ beam with spectral peak at Eν ≃ 3 GeV. Differential cross sections for muon momentum and production angle, π0 kinetic energy and production angle, and for squared four-momentum transfer are reported, and the cross section σðEνÞ is obtained over the range 1.5 GeV ≤ Eν < 20 GeV. Results are compared to GENIE and NuWro predictions and to published MINERvA cross sections for charged-current πþðπ0Þ production by νμðν¯μÞ neutrinos. Disagreements between data and simulation are observed at very low and relatively high values for muon angle and for Q2 that may reflect shortfalls in modeling of interactions on carbon. For π0 kinematic distributions, however, the data are consistent with the simulation and provide support for generator treatments o...
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11
artículo
Measurements of the inclusive neutrino and antineutrino charged current cross sections in MINERvA using the low- ν flux method
Publicado por
Devan J., Ren L., Aliaga L., Altinok O., Bellantoni L., Bercellie A., Betancourt M., Bodek A., Budd H., Cai T., Carneiro M.F., Da Motta H., Dytman S.A., Díaz G.A., Eberly B., Endress E., Felix J., Fields L., Fine R., Gago A.M., Galindo R., Gallagher H., Ghosh A., Gran R., Harris D.A., Higuera A., Hurtado K., Kleykamp J., Kordosky M., Le T., Maher E., Manly S., Mann W.A., Marshall C.M., Martinez Caicedo D.A., McFarland K.S., McGivern C.L., McGowan A.M., Messerly B., Miller J., Mislivec A., Morfín J.G., Mousseau J., Naples D., Nelson J.K., Norrick A., Nuruzzaman, Paolone V., Park J., Patrick C.E., Perdue G.N., Ramirez M.A., Ransome R.D., Ray H., Rimal D., Rodrigues P.A., Ruterbories D., Schellman H., Solano Salinas C.J., Tice B.G., Valencia E., Wolcott J., Wospakrik M.
Publicado 2016 Enlace
The total cross sections are important ingredients for the current and future neutrino oscillation experiments. We present measurements of the total charged-current neutrino and antineutrino cross sections on scintillator (CH) in the NuMI low-energy beamline using an in situ prediction of the shape of the flux as a function of neutrino energy from 2–50 GeV. This flux prediction takes advantage of the fact that neutrino and antineutrino interactions with low nuclear recoil energy (ν) have a nearly constant cross section as a function of incident neutrino energy. This measurement is the lowest energy application of the low-ν flux technique, the first time it has been used in the NuMI antineutrino beam configuration, and demonstrates that the technique is applicable to future neutrino beams operating at multi-GeVenergies. The cross section measurements presented are the most precise mea...
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12
artículo
Measurement of total and differential cross sections of neutrino and antineutrino coherent π ± production on carbon
Publicado por
Mislivec A., Higuera A., Aliaga L., Bellantoni L., Bercellie A., Betancourt M., BodeK A., Bravar A., Budd H., Caceres G.F.R.V., Cai T., Martinez Caicedo D.A., Carneiro M.F., Chavarria E., Da Motta H., Dytman S.A., Díaz G.A., Felix J., Fields L., Fine R., Gago A.M., Galindo R., Gallagher H., Ghosh A., Gran R., Harris D.A., Hurtado K., Jena D., Kleykamp J., Kordosky M., Le T., Maher E., Manly S., Mann W.A., Marshall C.M., McFarland K.S., Messerly B., Miller J., Morfín J.G., Mousseau J., Naples D., Nelson J.K., Nguyen C., NorricK A., Nuruzzaman, Paolone V., Perdue G.N., Ramírez M.A., Ransome R.D., Ray H., Ren L., Rimal D., Rodrigues P.A., Ruterbories D., Schellman H., Solano Salinas C.J., Sultana M., Sánchez Falero S., Tagg N., Valencia E., WospakriK M., Yaeggy B., Zavala G.
Publicado 2018 Enlace
Neutrino induced coherent charged pion production on nuclei, ν¯μA → μ π∓A, is a rare inelastic interaction in which the four-momentum squared transferred to the nucleus is nearly zero, leaving it intact. We identify such events in the scintillator of MINERvA by reconstructing jtj from the final state pion and muon momenta and by removing events with evidence of energetic nuclear recoil or production of other final state particles. We measure the total neutrino and antineutrino cross sections as a function of neutrino energy between 2 and 20 GeV and measure flux integrated differential cross sections as a function of Q2, Eπ, and θπ. The Q2 dependence and equality of the neutrino and antineutrino cross sections at finite Q2 provide a confirmation of Adler’s partial conservation of axial current hypothesis.
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13
artículo
Measurement of neutrino flux from neutrino-electron elastic scattering
Publicado por
Park J., Aliaga L., Altinok O., Bellantoni L., Bercellie A., Betancourt M., Bodek A., Bravar A., Budd H., Cai T., Carneiro M.F., Christy M.E., Chvojka J., Da Motta H., Dytman S.A., Díaz G.A., Eberly B., Felix J., Fields L., Fine R., Gago A.M., Galindo R., Ghosh A., Golan T., Gran R., Harris D.A., Higuera A., Kleykamp J., Kordosky M., Le T., Maher E., Manly S., Mann W.A., Marshall C.M., Martinez Caicedo D.A., McFarland K.S., McGivern C.L., McGowan A.M., Messerly B., Miller J., Mislivec A., Morfín J.G., Mousseau J., Naples D., Nelson J.K., Norrick A., Nuruzzaman, Osta J., Paolone V., Patrick C.E., Perdue G.N., Rakotondravohitra L., Ramirez M.A., Ray H., Ren L., Rimal D., Rodrigues P.A., Ruterbories D., Schellman H., Solano Salinas C.J., Tagg N., Tice B.G., Valencia E., Walton T., Wolcott J., Wospakrik M., Zavala G., Zhang D.
Publicado 2016 Enlace
Muon-neutrino elastic scattering on electrons is an observable neutrino process whose cross section is precisely known. Consequently a measurement of this process in an accelerator-based νμ beam can improve the knowledge of the absolute neutrino flux impinging upon the detector; typically this knowledge is limited to ∼10% due to uncertainties in hadron production and focusing. We have isolated a sample of 135±17 neutrino-electron elastic scattering candidates in the segmented scintillator detector of MINERvA, after subtracting backgrounds and correcting for efficiency. We show how this sample can be used to reduce the total uncertainty on the NuMI νμ flux from 9% to 6%. Our measurement provides a flux constraint that is useful to other experiments using the NuMI beam, and this technique is applicable to future neutrino beams operating at multi-GeV energies. © 2016 American Physic...
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14
artículo
Measurement of Final-State Correlations in Neutrino Muon-Proton Mesonless Production on Hydrocarbon at Eν ©=3 GeV
Publicado por
Lu X.-G., Betancourt M., Walton T., Akbar F., Aliaga L., Altinok O., Andrade D.A., Ascencio M., Bellantoni L., Bercellie A., Bodek A., Bravar A., Budd H., Cai T., Carneiro M.F., Chaves J., Coplowe D., Da Motta H., Dytman S.A., Díaz G.A., Felix J., Fields L., Fine R., Gago A.M., Galindo R., Gallagher H., Ghosh A., Gran R., Harris D.A., Henry S., Jena S., Jena D., Kleykamp J., Kordosky M., Le T., Maher E., Manly S., Mann W.A., Marshall C.M., McFarland K.S., McGowan A.M., Messerly B., Miller J., Mislivec A., Morfín J.G., Mousseau J., Naples D., Nelson J.K., Nguyen C., Norrick A., Nuruzzaman, Olivier A., Paolone V., Patrick C.E., Perdue G.N., Ramírez M.A., Ransome R.D., Ren L., Rimal D., Rodrigues P.A., Ruterbories D., Schellman H., Sobczyk J.T., Salinas C.J.S., Su H., Sultana M., Valencia E., Wark D., Weber A., Wolcott J., Wospakrik M., Yaeggy B., (MINERvA Collaboration)
Publicado 2018 Enlace
Final-state kinematic imbalances are measured in mesonless production of νμ þ A → μ− þ p þ X in the MINERvA tracker. Initial- and final-state nuclear effects are probed using the direction of the μ−-p transverse momentum imbalance and the initial-state momentum of the struck neutron. Differential cross sections are compared to predictions based on current approaches to medium modeling. These models underpredict the cross section at intermediate intranuclear momentum transfers that generally exceed the Fermi momenta. As neutrino interaction models need to correctly incorporate the effect of the nucleus in order to predict neutrino energy resolution in oscillation experiments, this result points to a region of phase space where additional cross section strength is needed in current models, and demonstrates a new technique that would be suitable for use in fine-grained liquid a...
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15
artículo
Single neutral pion production by charged-current ν-μ interactions on hydrocarbon at 〈E<inf>ν</inf>〉=3.6 GeV
Publicado por
Le T., Palomino J.L., Aliaga L., Altinok O., Bercellie A., Bodek A., Bravar A., Brooks W.K., Butkevich A., Martinez Caicedo D.A., Carneiro M.F., Christy M.E., Chvojka J., da Motta H., Devan J., Dytman S.A., Díaz G.A., Eberly B., Felix J., Fields L., Fine R., Gago A.M., Gallagher H., Gran R., Harris D.A., Higuera A., Hurtado K., Kordosky M., Maher E., Manly S., Mann W.A., Marshall C.M., McFarland K.S., McGivern C.L., McGowan A.M., Miller J., Morfín J.G., Mousseau J., Nelson J.K., Norrick A., Osta J., Paolone V., Park J., Patrick C.E., Perdue G.N., Rakotondravohitra L., Ransome R.D., Ray H., Ren L., Rodrigues P.A., Ruterbories D., Schellman H., Schmitz D.W., Sobczyk J.T., Solano Salinas C.J., Tagg N., Tice B.G., Valencia E., Walton T., Wolcott J., Yepes-Ramirez H., Zavala G., Zhang D., Ziemer B.P.
Publicado 2015 Enlace
Single neutral pion production via muon antineutrino charged-current interactions in plastic scintillator (CH) is studied using the MINERvA detector exposed to the NuMI low-energy, wideband antineutrino beam at Fermilab. Measurement of this process constrains models of neutral pion production in nuclei, which is important because the neutral-current analog is a background for appearance oscillation experiments. The differential cross sections for momentum and production angle, for events with a single observed and no charged pions, are presented and compared to model predictions. These results comprise the first measurement of the kinematics for this process.
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16
artículo
Measurement of quasielastic-like neutrino scattering at ∼3.5 GeV on a hydrocarbon target
Publicado por
Ruterbories D., Hurtado K., Osta J., Akbar F., Aliaga L., Andrade D.A., Ascencio M.V., Bashyal A., Bercellie A., Betancourt M., Bodek A., Budd H., Caceres G., Cai T., Carneiro M.F., Chaves J., Coplowe D., Da Motta H., Dytman S.A., Díaz G.A., Felix J., Fields L., Filkins A., Fine R., Gago A.M., Galindo R., Ghosh A., Gran R., Han J.Y., Harris D.A., Henry S., Jena S., Jena D., Kleykamp J., Kordosky M., Last D., Le T., Lu X.-G., Maher E., Manly S., Mann W.A., Mauger C., McFarland K.S., McGowan A.M., Messerly B., Miller J., Morfín J.G., Mousseau J., Naples D., Nelson J.K., Nguyen C., Norrick A., Nuruzzaman, Olivier A., Paolone V., Patrick C.E., Perdue G.N., Ramírez M.A., Ransome R.D., Ray H., Rimal D., Rodrigues P.A., Schellman H., Sobczyk J.T., Solano Salinas C.J., Su H., Sultana M., Syrotenko V.S., Valencia E., Wolcott J., Wospakrik M., Wret C., Yaeggy B., Zazueta L., (MINERnuA Collaboration)
Publicado 2019 Enlace
MINERvA presents a new analysis of neutrino induced quasielastic-like interactions in a hydrocarbon tracking target. We report a double-differential cross section using the muon transverse and longitudinal momentum. In addition, differential cross sections as a function of the square of the four-momentum transferred and the neutrino energy are calculated using a quasielastic hypothesis. Finally, an analysis of energy deposited near the interaction vertex is presented. These results are compared to modified genie predictions as well as a NuWro prediction. All results use a data set produced by 3.34×1020 protons on target creating a neutrino beam with a peak energy of approximately 3.5 GeV. .
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17
artículo
Measurement of the antineutrino to neutrino charged-current interaction cross section ratio in MINERvA
Publicado por
Ren L., Aliaga L., Altinok O., Bellantoni L., Bercellie A., Betancourt M., Bodek A., Bravar A., Budd H., Cai T., Carneiro M.F., Da Motta H., Devan J., Dytman S.A., Díaz G.A., Eberly B., Endress E., Felix J., Fields L., Fine R., Gago A.M., Galindo R., Gallagher H., Ghosh A., Golan T., Gran R., Han J.Y., Harris D.A., Hurtado K., Kiveni M., Kleykamp J., Kordosky M., Le T., Maher E., Manly S., Mann W.A., Marshall C.M., Martinez Caicedo D.A., McFarland K.S., McGivern C.L., McGowan A.M., Messerly B., Miller J., Mislivec A., Morfín J.G., Mousseau J., Naples D., Nelson J.K., Norrick A., Nuruzzaman, Paolone V., Park J., Patrick C.E., Perdue G.N., Ramírez M.A., Ransome R.D., Ray H., Rimal D., Rodrigues P.A., Ruterbories D., Schellman H., Solano Salinas C.J., Sultana M., Sánchez Falero S., Valencia E., Walton T., Wolcott J., Wospakrik M., Yaeggy B.
Publicado 2017 Enlace
We present measurements of the neutrino and antineutrino total charged-current cross sections on carbon and their ratio using the MINERvA scintillator-tracker. The measurements span the energy range 2–22 GeV and were performed using forward and reversed horn focusing modes of the Fermilab low-energy NuMI beam to obtain large neutrino and antineutrino samples. The flux is obtained using a subsample of charged-current events at low hadronic energy transfer along with precise higher energy external neutrino cross section data overlapping with our energy range between 12–22 GeV.We also report onthe antineutrino-neutrino cross section ratio, RCC, which does not rely on external normalization information. Our ratio measurement, obtained within the same experiment using the same technique, benefits from the cancellation of common sample systematic uncertainties and reaches a precision of âˆ...
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18
artículo
MINERvA neutrino detector response measured with test beam data
Publicado por
Aliaga L., Altinok O., Araujo Del Castillo C., Bagby L., Bellantoni L., Bergan W.F., Bodek A., Bradford R., Bravar A., Budd H., Butkevich A., Martinez Caicedo D.A., Carneiro M.F., Christy M.E., Chvojka J., Da Motta H., Devan J., Díaz G.A., Dytman S.A., Eberly B., Felix J., Fields L., Fine R., Flight R., Gago A.M., Gingu C., Golan T., Gomez A., Gran R., Harris D.A., Higuera A., Howley I.J., Hurtado K., Kleykamp J., Kordosky M., Lanari M., Le T., Leister A.J., Lovlein A., Maher E., Mann W.A., Marshall C.M., McFarland K.S., McGivern C.L., McGowan A.M., Messerly B., Miller J., Miller W., Mislivec A., Morfín J.G., Mousseau J., Muhlbeier T., Naples D., Nelson J.K., Norrick A., Ochoa N., O'Connor C.D., Osmanov B., Osta J., Paolone V., Patrick C.E., Patrick L., Perdue G.N., Pérez Lara C.E., Rakotondravohitra L., Ray H., Ren L., Rodrigues P.A., Rubinov P., Rude C.R., Ruterbories D., Schellman H., Schmitz D.W., Solano Salinas C.J., Tagg N., Tice B.G., Urrutia Z., Valencia E., Walton T., Westerberg A., Wolcott J., Woodward N., Wospakrik M., Zavala G., Zhang D., Ziemer B.P.
Publicado 2015 Enlace
The MINERvA collaboration operated a scaled-down replica of thesolid scintillator tracking and sampling calorimeter regions of the MINERvA detector in a hadron test beam at the Fermilab Test Beam Facility. This paper reports measurements with samples of protons, pions, and electrons from 0.35 to 2.0 GeV/c momentum. The calorimetric response to protons, pions, and electrons is obtained from these data. A measurement of the parameter in Birks' law and an estimate of the tracking efficiency are extracted from the proton sample. Overall the data are well described by a Geant4-based Monte Carlo simulation of the detector and particle interactions with agreements better than 4% for the calorimetric response, though some features of the data are not precisely modeled. These measurements are used to tune the MINERvA detector simulation and evaluate systematic uncertainties in support of the MINE...
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19
artículo
Design, calibration, and performance of the MINERvA detector
Publicado por
Aliaga L., Bagby L., Baldin B., Baumbaugh A., Bodek A., Bradford R., Brooks W.K., Boehnlein D., Boyd S., Budd H., Butkevich A., Martinez Caicedo D.A., Castromonte C.M., Christy M.E., Chvojka J., Da Motta H., Damiani D.S., Danko I., Datta M., Devan J., Draeger E., Dytman S.A., Díaz G.A., Eberly B., Edmondson D.A., Felix J., Fields L., Fiorentini G.A., Flight R.S., Gago A.M., Gallagher H., George C.A., Gielata J.A., Gingu C., Gran R., Grange J., Grossman N., Harris D.A., Heaton J., Higuera A., Hobbs J.A., Howley I.J., Hurtado K., Jerkins M., Kafka T., Kantner M.O., Keppel C., Kilmer J., Kordosky M., Krajeski A.H., Kumbartzki G.J., Lee H., Leister A.G., Locke G., Maggi G., Maher E., Manly S., Mann W.A., Marshall C.M., McFarland K.S., McGivern C.L., McGowan A.M., Mislivec A., Morfín J.G., Mousseau J., Naples D., Nelson J.K., Niculescu G., Niculescu I., O'Connor C.D., Ochoa N., Olsen J., Osmanov B., Osta J., Palomino J.L., Paolone V., Park J., Perdue G.N., Peña C., Pla-Dalmau A., Rakotondravohitra L., Ransome R.D., Ray H., Ren L., Rubinov P., Rude C., Sassin K.E., Schellman H., Schmitz D.W., Schneider R.M., Schulte E.C., Simon C., Snider F.D., Snyder M.C., Solano Salinas C.J., Tagg N., Tice B.G., Tilden R.N., Velásquez J.P., Walton T., Westerberg A.
Publicado 2014 Enlace
The skin is the largest organ of the body that protects it from the external environment. High- frequency ultra sound (HF-US) has been used to visualize the skin in depth and to diagnose some pathologies in dermatological applications. Quantitative ultrasound (QUS) includes several techniques that provide values of particular physical properties. In this thesis work, three QUS parameters are explained and used to characterize healthy skin through HF-US: attenuation coefficient slope (ACS), backscatter coefficient (BSC) and shear wave speed (SWS). They were estimated with the regularized spectral-log difference (RSLD) method, the reference phan- tom method, and the crawling wave sonoelastography method, respectively. All the three parameters were assessed in phantoms, ex vivo and in vivo skin. In calibrated phantoms, RSLD showed a reduc- tion of up to 93% of the standard deviation concern...
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