Search

Your search keyword '"Lopes JAM"' showing total 6 results
Start Over Author "Lopes JAM" Topic physics.ins-det
6 results on '"Lopes JAM"'

1. XENON1T dark matter data analysis: Signal and background models and statistical inference

Author

Aprile, E, Aalbers, J, Agostini, F, Alfonsi, M, Althueser, L, Amaro, FD, Antochi, VC, Arneodo, F, Baudis, L, Bauermeister, B, Benabderrahmane, ML, Berger, T, Breur, PA, Brown, A, Brown, E, Bruenner, S, Bruno, G, Budnik, R, Capelli, C, Cardoso, JMR, Cichon, D, Coderre, D, Colijn, AP, Conrad, J, Cussonneau, JP, Decowski, MP, de Perio, P, Di Gangi, P, Di Giovanni, A, Diglio, S, Elykov, A, Eurin, G, Fei, J, Ferella, AD, Fieguth, A, Fulgione, W, Rosso, A Gallo, Galloway, M, Gao, F, Garbini, M, Grandi, L, Greene, Z, Hasterok, C, Hogenbirk, E, Howlett, J, Iacovacci, M, Itay, R, Joerg, F, Kazama, S, Kish, A, Koltman, G, Kopec, A, Landsman, H, Lang, RF, Levinson, L, Lin, Q, Lindemann, S, Lindner, M, Lombardi, F, Lopes, JAM, Fune, E Lopez, Macolino, C, Mahlstedt, J, Manfredini, A, Marignetti, F, Undagoitia, T Marrodan, Masbou, J, Masson, D, Mastroianni, S, Messina, M, Micheneau, K, Miller, K, Molinario, A, Mora, K, Mosbacher, Y, Murra, M, Naganoma, J, Ni, K, Oberlack, U, Odgers, K, Pelssers, B, Peres, R, Piastra, F, Pienaar, J, Pizzella, V, Plante, G, Podviianiuk, R, Qiu, H, Garcia, D Ramirez, Reichard, S, Riedel, B, Rizzo, A, Rocchetti, A, Rupp, N, dos Santos, JMF, Sartorelli, G, Sarcevic, N, Scheibelhut, M, Schindler, S, and Schreiner, J

Subjects
physics.ins-det, hep-ex
Abstract

The XENON1T experiment searches for dark matter particles through theirscattering off xenon atoms in a 2 tonne liquid xenon target. The detector is adual-phase time projection chamber, which measures simultaneously thescintillation and ionization signals produced by interactions in target volume,to reconstruct energy and position, as well as the type of the interaction. Thebackground rate in the central volume of XENON1T detector is the lowestachieved so far with a liquid xenon-based direct detection experiment. In thiswork we describe the response model of the detector, the background and signalmodels, and the statistical inference procedures used in the dark mattersearches with a 1 tonne$\times$year exposure of XENON1T data, that leaded tothe best limit to date on WIMP-nucleon spin-independent elastic scattercross-section for WIMP masses above 6 GeV/c$^2$.

Published
2019

2. Lowering the radioactivity of the photomultiplier tubes for the XENON1T dark matter experiment

Author

XENON Collaboration, Aprile, E, Agostini, F, Alfonsi, M, Arazi, L, Arisaka, K, Arneodo, F, Auger, M, Balan, C, Barrow, P, Baudis, L, Bauermeister, B, Behrens, A, Beltrame, P, Brown, A, Brown, E, Bruenner, S, Bruno, G, Budnik, R, Bütikofer, L, Cardoso, JMR, Coderre, D, Colijn, AP, Contreras, H, Cussonneau, JP, Decowski, MP, Giovanni, A Di, Duchovni, E, Fattori, S, Ferella, AD, Fieguth, A, Fulgione, W, Galloway, M, Garbini, M, Geis, C, Goetzke, LW, Grignon, C, Gross, E, Hampel, W, Itay, R, Kaether, F, Kessler, G, Kish, A, Landsman, H, Lang, RF, Calloch, M Le, Lellouch, D, Levinson, L, Levy, C, Lindemann, S, Lindner, M, Lopes, JAM, Lyashenko, A, Macmullin, S, Undagoitia, T Marrodán, Masbou, J, Massoli, FV, Mayani, D, Fernandez, AJ Melgarejo, Meng, Y, Messina, M, Miguez, B, Molinario, A, Murra, M, Naganoma, J, Oberlack, U, Orrigo, SEA, Pakarha, P, Pantic, E, Persiani, R, Piastra, F, Pienaar, J, Plante, G, Priel, N, Rauch, L, Reichard, S, Reuter, C, Rizzo, A, Rosendahl, S, dos Santos, JMF, Sartorelli, G, Schindler, S, Schreiner, J, Schumann, M, Lavina, L Scotto, Selvi, M, Shagin, P, Simgen, H, Teymourian, A, Thers, D, Tiseni, A, Trinchero, G, Tunnell, C, Vitells, O, Wall, R, Wang, H, Weber, M, Weinheimer, C, and Laubenstein, M

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Synchrotrons and Accelerators, Physical Sciences, astro-ph.IM, physics.ins-det, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Astronomical sciences, Atomic, molecular and optical physics, Particle and high energy physics
Abstract

The low-background, VUV-sensitive 3-inch diameter photomultiplier tube R11410 has been developed by Hamamatsu for dark matter direct detection experiments using liquid xenon as the target material. We present the results from the joint effort between the XENON collaboration and the Hamamatsu company to produce a highly radio-pure photosensor (version R11410-21) for the XENON1T dark matter experiment. After introducing the photosensor and its components, we show the methods and results of the radioactive contamination measurements of the individual materials employed in the photomultiplier production. We then discuss the adopted strategies to reduce the radioactivity of the various PMT versions. Finally, we detail the results from screening 286 tubes with ultra-low background germanium detectors, as well as their implications for the expected electronic and nuclear recoil background of the XENON1T experiment.

Published
2015

3. Present Status and Future Perspectives of the NEXT Experiment

Author

Cadenas, JJ Gómez, Álvarez, V, Borges, FIG, Cárcel, S, Castel, J, Cebrián, S, Cervera, A, Conde, CAN, Dafni, T, Dias, THVT, Díaz, J, Egorov, M, Esteve, R, Evtoukhovitch, P, Fernandes, LMP, Ferrario, P, Ferreira, AL, Freitas, EDC, Gehman, VM, Gil, A, Goldschmidt, A, Gómez, H, González-Díaz, D, Gutiérrez, RM, Hauptman, J, Morata, JA Hernando, Herrera, DC, Iguaz, FJ, Irastorza, IG, Jinete, MA, Labarga, L, Laing, A, Liubarsky, I, Lopes, JAM, Lorca, D, Losada, M, Luzón, G, Marí, A, Martín-Albo, J, Martínez, A, Miller, T, Moiseenko, A, Monrabal, F, Monserrate, M, Monteiro, CMB, Mora, FJ, Moutinho, LM, Vidal, J Muñoz, da Luz, H Natal, Navarro, G, Nebot-Guinot, M, Nygren, D, Oliveira, CAB, Palma, R, Pérez, Javier, Pérez-Aparicio, JL, Renner, J, Ripoll, L, Rodríguez, A, Rodríguez, J, Santos, FP, dos Santos, JMF, Seguí, L, Serra, L, Shuman, D, Simón, A, Sofka, C, Sorel, M, Toledo, JF, Tomás, A, Torrent, J, Tsamalaidze, Z, Veloso, JFCA, Villar, JA, Webb, R, White, J, and Yahlali, N

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, physics.ins-det, Mathematical Sciences, Mathematical sciences, Physical sciences
Abstract

NEXT is an experiment dedicated to neutrinoless double beta decay searches in xenon. The detector is a TPC, holding 100 kg of high-pressure xenon enriched in the 136Xe isotope. It is under construction in the Laboratorio Subterráneo de Canfranc in Spain, and it will begin operations in 2015. The NEXT detector concept provides an energy resolutionbetter than 1% FWHM and a topological signal that can be used to reduce the background. Furthermore, the NEXT technology can be extrapolated to a 1 ton-scale experiment. © 2014 J. J. Gómez Cadenas et al.

Published
2014

4. Present status and future perspectives of the NEXT experiment

Author

Gómez Cadenas, JJ, Álvarez, V, Borges, FIG, Cárcel, S, Castel, J, Cebrián, S, Cervera, A, Conde, CAN, Dafni, T, Dias, THVT, Díaz, J, Egorov, M, Esteve, R, Evtoukhovitch, P, Fernandes, LMP, Ferrario, P, Ferreira, AL, Freitas, EDC, Gehman, VM, Gil, A, Goldschmidt, A, Gómez, H, González-Díaz, D, Gutiérrez, RM, Hauptman, J, Hernando Morata, JA, Herrera, DC, Iguaz, FJ, Irastorza, IG, Jinete, MA, Labarga, L, Laing, A, Liubarsky, I, Lopes, JAM, Lorca, D, Losada, M, Luzón, G, Marí, A, Martín-Albo, J, Martínez, A, Miller, T, Moiseenko, A, Monrabal, F, Monserrate, M, Monteiro, CMB, Mora, FJ, Moutinho, LM, Muñoz Vidal, J, Natal Da Luz, H, Navarro, G, Nebot-Guinot, M, Nygren, D, Oliveira, CAB, Palma, R, Pérez, J, Pérez-Aparicio, JL, Renner, J, Ripoll, L, Rodríguez, A, Rodríguez, J, Santos, FP, Santos, JMFD, Seguí, L, Serra, L, Shuman, D, Simón, A, Sofka, C, Sorel, M, Toledo, JF, Tomás, A, Torrent, J, Tsamalaidze, Z, Veloso, JFCA, Villar, JA, Webb, R, White, J, and Yahlali, N

Subjects
physics.ins-det, Mathematical Sciences, Physical Sciences
Abstract

NEXT is an experiment dedicated to neutrinoless double beta decay searches in xenon. The detector is a TPC, holding 100 kg of high-pressure xenon enriched in the 136Xe isotope. It is under construction in the Laboratorio Subterráneo de Canfranc in Spain, and it will begin operations in 2015. The NEXT detector concept provides an energy resolutionbetter than 1% FWHM and a topological signal that can be used to reduce the background. Furthermore, the NEXT technology can be extrapolated to a 1 ton-scale experiment. © 2014 J. J. Gómez Cadenas et al.

Published
2014

5. Sensitivity of the DARWIN observatory to the neutrinoless double beta decay of ¹³⁶Xe

Author

Agostini, F, Maouloud, SEMA, Althueser, L, Amaro, F, Antunovic, B, Aprile, E, Baudis, L, Baur, D, Biondi, Y, Bismark, A, Breur, PA, Brown, A, Bruno, G, Budnik, R, Capelli, C, Cardoso, J, Cichon, D, Clark, M, Colijn, AP, Cuenca-García, JJ, Cussonneau, JP, Decowski, MP, Depoian, A, Dierle, J, Gangi, PD, Giovanni, AD, Diglio, S, Santos, JMFD, Drexlin, G, Eitel, K, Engel, R, Ferella, AD, Fischer, H, Galloway, M, Gao, F, Girard, F, Glück, F, Grandi, L, Größle, R, Gumbsheimer, R, Hansmann-Menzemer, S, Jörg, F, Khundzakishvili, G, Kopec, A, Kuger, F, Krauss, LM, Landsman, H, Lang, RF, Lindemann, S, Lindner, M, Lopes, JAM, Villalpando, AL, Macolino, C, Manfredini, A, Undagoitia, TM, Masbou, J, Masson, E, Meinhardt, P, Milutinovic, S, Molinario, A, Monteiro, CMB, Murra, M, Oberlack, UG, Pandurovic, M, Peres, R, Pienaar, J, Pierre, M, Pizzella, V, Qin, J, García, DR, Reichard, S, Rupp, N, Sanchez-Lucas, P, Sartorelli, G, Schulte, D, Schumann, M, Lavina, LS, Selvi, M, Silva, M, Simgen, H, Steidl, M, Terliuk, A, Therreau, C, Thers, D, Thieme, K, Trotta, R, Tunnell, CD, Valerius, K, Volta, G, Weinheimer, C, Wittweg, C, Wolf, J, Zopounidis, JP, Zuber, K, Imperial College Trust, European Commission, Science and Technology Facilities Council (STFC), and Science and Technology Facilities Council

Subjects
Science & Technology, hep-ex, Physics, Physical Sciences, 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics, nucl-ex, physics.ins-det, 0206 Quantum Physics, Nuclear & Particles Physics, Physics, Particles & Fields
Abstract

The DARWIN observatory is a proposed next-generation experiment to search for particle dark matter and for the neutrinoless double beta decay of 136Xe. Out of its 50 t total natural xenon inventory, 40 t will be the active target of a time projection chamber which thus contains about 3.6 t of 136Xe. Here, we show that its projected half-life sensitivity is 2.4×1027year, using a fiducial volume of 5 t of natural xenon and 10 year of operation with a background rate of less than 0.2 events/(t ⋅ year) in the energy region of interest. This sensitivity is based on a detailed Monte Carlo simulation study of the background and event topologies in the large, homogeneous target. DARWIN will be comparable in its science reach to dedicated double beta decay experiments using xenon enriched in 136Xe.

Published
2020

6. XENON1T dark matter data analysis: Signal and background models and statistical inference

Author

Aprile, E., Aalbers, J., Agostini, F., Alfonsi, M., Althueser, L., Amaro, Fd, Antochi, Vc, Arneodo, F., Baudis, L., Bauermeister, B., Benabderrahmane, Ml, Berger, T., Breur, Pa, Brown, A., Brown, E., Bruenner, S., Bruno, G., Budnik, R., Capelli, C., Cardoso, Jmr, Cichon, D., Coderre, D., Colijn, Ap, Conrad, J., Cussonneau, Jp, Decowski, Mp, Perio, P., Di Gangi, P., Di Giovanni, A., Diglio, S., Elykov, A., Eurin, G., Fei, J., Ferella, Ad, Fieguth, A., Fulgione, W., Andrea Gallo Rosso, Galloway, M., Gao, F., Garbini, M., Grandi, L., Greene, Z., Hasterok, C., Hogenbirk, E., Howlett, J., Iacovacci, M., Itay, R., Joerg, F., Kazama, S., Kish, A., Koltman, G., Kopec, A., Landsman, H., Lang, Rf, Levinson, L., Lin, Q., Lindemann, S., Lindner, M., Lombardi, F., Lopes, Jam, Fune, E. Lopez, Macolino, C., Mahlstedt, J., Manfredini, A., Marignetti, F., Undagoitia, T. Marrodan, Masbou, J., Masson, D., Mastroianni, S., Messina, M., Micheneau, K., Miller, K., Molinario, A., Mora, K., Mosbacher, Y., Murra, M., Naganoma, J., Ni, K., Oberlack, U., Odgers, K., Pelssers, B., Peres, R., Piastra, F., Pienaar, J., Pizzella, V., Plante, G., Podviianiuk, R., Qiu, H., Garcia, D. Ramirez, Reichard, S., Riedel, B., Rizzo, A., Rocchetti, A., Rupp, N., Dos Santos, Jmf, Sartorelli, G., Sarcevic, N., Scheibelhut, M., Schindler, S., and Schreiner, J.

Subjects
Quantum Physics, Particle and Plasma Physics, Physics::Instrumentation and Detectors, hep-ex, Astrophysics::Instrumentation and Methods for Astrophysics, Molecular, Nuclear, physics.ins-det, Atomic, Nuclear & Particles Physics, Astronomical and Space Sciences
Abstract

The XENON1T experiment searches for dark matter particles through their scattering off xenon atoms in a 2 tonne liquid xenon target. The detector is a dual-phase time projection chamber, which measures simultaneously the scintillation and ionization signals produced by interactions in target volume, to reconstruct energy and position, as well as the type of the interaction. The background rate in the central volume of XENON1T detector is the lowest achieved so far with a liquid xenon-based direct detection experiment. In this work we describe the response model of the detector, the background and signal models, and the statistical inference procedures used in the dark matter searches with a 1 tonne$\times$year exposure of XENON1T data, that leaded to the best limit to date on WIMP-nucleon spin-independent elastic scatter cross-section for WIMP masses above 6 GeV/c$^2$.

Published
2019

Catalog

Books, media, physical & digital resources
See catalog results