Resultados de Búsqueda por Autor

1

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

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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.

2

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

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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.

3

artículo

Evidence for Neutral-Current Diffractive π0 Production from Hydrogen in Neutrino Interactions on Hydrocarbon

Publicado por
Wolcott J., Aliaga L., Altinok O., Bercellie A., Betancourt M., Bodek A., Bravar A., Budd H., Cai T., Carneiro M.F., Chvojka J., Da Motta H., Devan J., Dytman S.A., Díaz G.A., Eberly B., Endress E., Felix J., Fields L., Fine R., Galindo R., Gallagher H., Golan T., Gran R., Harris D.A., Higuera 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, Osta J., Paolone V., Park J., Patrick C.E., Perdue G.N., Rakotondravohitra L., Ramirez M.A., Ray H., Ren L., Rimal D., Rodrigues P.A., Ruterbories D., Schellman H., Schmitz D.W., Solano Salinas C.J., Sánchez Falero S., Tagg N., Tice B.G., Valencia E., Walton T., Wospakrik M., Zhang D.

Publicado 2016

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The MINERvA experiment observes an excess of events containing electromagnetic showers relative to the expectation from Monte Carlo simulations in neutral-current neutrino interactions with mean beam energy of 4.5 GeV on a hydrocarbon target. The excess is characterized and found to be consistent with neutral-current π0 production with a broad energy distribution peaking at 7 GeV and a total cross section of 0.26 0.02ðstat.Þ 0.08ðsys:Þ × 10−39 cm2. The angular distribution, electromagnetic shower energy, and spatial distribution of the energy depositions of the excess are consistent with expectations from neutrino neutral-current diffractive π0 production from hydrogen in the hydrocarbon target. These data comprise the first direct experimental observation and constraint for a reaction that poses an important background process in neutrino-oscillation experiments searching for �...

4

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

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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...

5

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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

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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...