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9 results on '"García, Y."'

1. Sensitivity of a tonne-scale NEXT detector for neutrinoless double-beta decay searches

Author

Adams, C, Álvarez, V, Arazi, L, Arnquist, IJ, Azevedo, CDR, Bailey, K, Ballester, F, Benlloch-Rodríguez, JM, Borges, FIGM, Byrnes, N, Cárcel, S, Carrión, JV, Cebrián, S, Church, E, Conde, CAN, Contreras, T, Denisenko, AA, Díaz, G, Díaz, J, Escada, J, Esteve, R, Felkai, R, Fernandes, LMP, Ferrario, P, Ferreira, AL, Foss, F, Freitas, EDC, Freixa, Z, Generowicz, J, Goldschmidt, A, Gómez-Cadenas, JJ, González, R, González-Díaz, D, Gosh, S, Guenette, R, Gutiérrez, RM, Haefner, J, Hafidi, K, Hauptman, J, Henriques, CAO, Hernando Morata, JA, Herrero, P, Herrero, V, Ho, J, Ifergan, Y, Jones, BJP, Kekic, M, Labarga, L, Laing, A, Lebrun, P, López-March, N, Losada, M, Mano, RDP, Martín-Albo, J, Martínez, A, Martínez-Vara, M, Martínez-Lema, G, McDonald, AD, Meziani, ZE, Monrabal, F, Monteiro, CMB, Mora, FJ, Muñoz Vidal, J, Newhouse, C, Novella, P, Nygren, DR, Oblak, E, Palmeiro, B, Para, A, Pérez, J, Querol, M, Redwine, A, Renner, J, Ripoll, L, Rivilla, I, Rodríguez García, Y, Rodríguez, J, Rogero, C, Rogers, L, Romeo, B, Romo-Luque, C, Santos, FP, dos Santos, JMF, Simón, A, Sorel, M, Stanford, C, Teixeira, JMR, Thapa, P, Toledo, JF, Torrent, J, Usón, A, Veloso, JFCA, Vuong, TT, Webb, R, Weiss-Babai, R, White, JT, Woodruff, K, and Yahlali, N

Subjects
Mathematical Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract

The Neutrino Experiment with a Xenon TPC (NEXT) searches for the neutrinoless double-beta (0νββ) decay of 136Xe using high-pressure xenon gas TPCs with electroluminescent amplification. A scaled-up version of this technology with about 1 tonne of enriched xenon could reach in less than 5 years of operation a sensitivity to the half-life of 0νββ decay better than 1027 years, improving the current limits by at least one order of magnitude. This prediction is based on a well-understood background model dominated by radiogenic sources. The detector concept presented here represents a first step on a compelling path towards sensitivity to the parameter space defined by the inverted ordering of neutrino masses, and beyond. [Figure not available: see fulltext.]

Published
2021

2. Boosting background suppression in the NEXT experiment through Richardson-Lucy deconvolution

Author

Simón, A, Ifergan, Y, Redwine, AB, Weiss-Babai, R, Arazi, L, Adams, C, Almazán, H, Álvarez, V, Aparicio, B, Aranburu, AI, Arnquist, IJ, Azevedo, CDR, Bailey, K, Ballester, F, Benlloch-Rodríguez, JM, Borges, FIGM, Byrnes, N, Cárcel, S, Carrión, JV, Cebrián, S, Church, E, Conde, CAN, Contreras, T, Cossío, FP, Denisenko, AA, Díaz, G, Díaz, J, Escada, J, Esteve, R, Felkai, R, Fernandes, LMP, Ferrario, P, Ferreira, AL, Foss, F, Freitas, EDC, Freixa, Z, Generowicz, J, Goldschmidt, A, Gómez-Cadenas, JJ, González, R, González-Díaz, D, Gosh, S, Guenette, R, Gutiérrez, RM, Haefner, J, Hafidi, K, Hauptman, J, Henriques, CAO, Hernando Morata, JA, Herrero, P, Herrero, V, Ho, J, Jones, BJP, Kekic, M, Labarga, L, Laing, A, Lebrun, P, López-March, N, Losada, M, Mano, RDP, Martín-Albo, J, Martínez, A, Martínez-Vara, M, Martínez-Lema, G, McDonald, AD, Meziani, Z-E, Monrabal, F, Monteiro, CMB, Mora, FJ, Muñoz Vidal, J, Newhouse, C, Novella, P, Nygren, DR, Oblak, E, Odriozola-Gimeno, M, Palmeiro, B, Para, A, Pérez, J, Querol, M, Renner, J, Ripoll, L, Rivilla, I, Rodríguez García, Y, Rodríguez, J, Rogero, C, Rogers, L, Romeo, B, Romo-Luque, C, Santos, FP, dos Santos, JMF, Sorel, M, Stanford, C, Teixeira, JMR, Thapa, P, Toledo, JF, Torrent, J, Usón, A, Veloso, JFCA, Vuong, TT, and Webb, R

Subjects
Affordable and Clean Energy, Mathematical Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract

Next-generation neutrinoless double beta decay experiments aim for half-life sensitivities of ∼ 1027 yr, requiring suppressing backgrounds to < 1 count/tonne/yr. For this, any extra background rejection handle, beyond excellent energy resolution and the use of extremely radiopure materials, is of utmost importance. The NEXT experiment exploits differences in the spatial ionization patterns of double beta decay and single-electron events to discriminate signal from background. While the former display two Bragg peak dense ionization regions at the opposite ends of the track, the latter typically have only one such feature. Thus, comparing the energies at the track extremes provides an additional rejection tool. The unique combination of the topology-based background discrimination and excellent energy resolution (1% FWHM at the Q-value of the decay) is the distinguishing feature of NEXT. Previous studies demonstrated a topological background rejection factor of ∼ 5 when reconstructing electron-positron pairs in the 208Tl 1.6 MeV double escape peak (with Compton events as background), recorded in the NEXT-White demonstrator at the Laboratorio Subterráneo de Canfranc, with 72% signal efficiency. This was recently improved through the use of a deep convolutional neural network to yield a background rejection factor of ∼ 10 with 65% signal efficiency. Here, we present a new reconstruction method, based on the Richardson-Lucy deconvolution algorithm, which allows reversing the blurring induced by electron diffusion and electroluminescence light production in the NEXT TPC. The new method yields highly refined 3D images of reconstructed events, and, as a result, significantly improves the topological background discrimination. When applied to real-data 1.6 MeV e−e+ pairs, it leads to a background rejection factor of 27 at 57% signal efficiency. [Figure not available: see fulltext.].

Published
2021

3. Sensitivity of the NEXT experiment to Xe-124 double electron capture

Author

Martínez-Lema, G, Martínez-Vara, M, Sorel, M, Adams, C, Álvarez, V, Arazi, L, Arnquist, IJ, Azevedo, CDR, Bailey, K, Ballester, F, Benlloch-Rodríguez, JM, Borges, FIGM, Byrnes, N, Cárcel, S, Carrión, JV, Cebrián, S, Church, E, Conde, CAN, Contreras, T, Díaz, G, Díaz, J, Diesburg, M, Escada, J, Esteve, R, Felkai, R, Fernandes, AFM, Fernandes, LMP, Ferrario, P, Ferreira, AL, Freitas, EDC, Generowicz, J, Ghosh, S, Goldschmidt, A, Gómez-Cadenas, JJ, González-Díaz, D, Guenette, R, Gutiérrez, RM, Haefner, J, Hafidi, K, Hauptman, J, Henriques, CAO, Hernando Morata, JA, Herrero, P, Herrero, V, Ifergan, Y, Johnston, S, Jones, BJP, Kekic, M, Labarga, L, Laing, A, Lebrun, P, López-March, N, Losada, M, Mano, RDP, Martín-Albo, J, Martínez, A, McDonald, AD, Monrabal, F, Monteiro, CMB, Mora, FJ, Muñoz Vidal, J, Novella, P, Nygren, DR, Palmeiro, B, Para, A, Pérez, J, Querol, M, Redwine, AB, Renner, J, Repond, J, Riordan, S, Ripoll, L, Rodríguez García, Y, Rodríguez, J, Rogers, L, Romeo, B, Romo-Luque, C, Santos, FP, dos Santos, JMF, Simón, A, Sofka, C, Stiegler, T, Toledo, JF, Torrent, J, Usón, A, Veloso, JFCA, Webb, R, Weiss-Babai, R, White, JT, Woodruff, K, and Yahlali, N

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Synchrotrons and Accelerators, Physical Sciences, Dark Matter and Double Beta Decay, Mathematical Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Mathematical physics, Nuclear and plasma physics, Particle and high energy physics
Abstract

Double electron capture by proton-rich nuclei is a second-order nuclear process analogous to double beta decay. Despite their similarities, the decay signature is quite different, potentially providing a new channel to measure the hypothesized neutrinoless mode of these decays. The Standard-Model-allowed two-neutrino double electron capture (2νEC EC) has been predicted for a number of isotopes, but only observed in 78Kr, 130Ba and, recently, 124Xe. The sensitivity to this decay establishes a benchmark for the ultimate experimental goal, namely the potential to discover also the lepton-number-violating neutrinoless version of this process, 0νEC EC. Here we report on the current sensitivity of the NEXT-White detector to 124Xe 2νEC EC and on the extrapolation to NEXT-100. Using simulated data for the 2νEC EC signal and real data from NEXT-White operated with 124Xe-depleted gas as background, we define an optimal event selection that maximizes the NEXT-White sensitivity. We estimate that, for NEXT-100 operated with xenon gas isotopically enriched with 1 kg of 124Xe and for a 5-year run, a sensitivity to the 2νEC EC half-life of 6 × 1022 y (at 90% confidence level) or better can be reached. [Figure not available: see fulltext.]

Published
2021

4. Demonstration of background rejection using deep convolutional neural networks in the NEXT experiment

Author

Kekic, M, Adams, C, Woodruff, K, Renner, J, Church, E, Del Tutto, M, Hernando Morata, JA, Gómez-Cadenas, JJ, Álvarez, V, Arazi, L, Arnquist, IJ, Azevedo, CDR, Bailey, K, Ballester, F, Benlloch-Rodríguez, JM, Borges, FIGM, Byrnes, N, Cárcel, S, Carrión, JV, Cebrián, S, Conde, CAN, Contreras, T, Díaz, G, Díaz, J, Diesburg, M, Escada, J, Esteve, R, Felkai, R, Fernandes, AFM, Fernandes, LMP, Ferrario, P, Ferreira, AL, Freitas, EDC, Generowicz, J, Ghosh, S, Goldschmidt, A, González-Díaz, D, Guenette, R, Gutiérrez, RM, Haefner, J, Hafidi, K, Hauptman, J, Henriques, CAO, Herrero, P, Herrero, V, Ifergan, Y, Jones, BJP, Labarga, L, Laing, A, Lebrun, P, López-March, N, Losada, M, Mano, RDP, Martín-Albo, J, Martínez, A, Martínez-Lema, G, Martínez-Vara, M, McDonald, AD, Meziani, Z-E, Monrabal, F, Monteiro, CMB, Mora, FJ, Muñoz Vidal, J, Novella, P, Nygren, DR, Palmeiro, B, Para, A, Pérez, J, Querol, M, Redwine, AB, Ripoll, L, Rodríguez García, Y, Rodríguez, J, Rogers, L, Romeo, B, Romo-Luque, C, Santos, FP, dos Santos, JMF, Simón, A, Sofka, C, Sorel, M, Stiegler, T, Toledo, JF, Torrent, J, Usón, A, Veloso, JFCA, Webb, R, Weiss-Babai, R, White, JT, and Yahlali, N

Subjects
Mathematical Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract

Convolutional neural networks (CNNs) are widely used state-of-the-art computer vision tools that are becoming increasingly popular in high-energy physics. In this paper, we attempt to understand the potential of CNNs for event classification in the NEXT experiment, which will search for neutrinoless double-beta decay in 136Xe. To do so, we demonstrate the usage of CNNs for the identification of electron-positron pair production events, which exhibit a topology similar to that of a neutrinoless double-beta decay event. These events were produced in the NEXT-White high-pressure xenon TPC using 2.6 MeV gamma rays from a 228Th calibration source. We train a network on Monte Carlo-simulated events and show that, by applying on-the-fly data augmentation, the network can be made robust against differences between simulation and data. The use of CNNs offers significant improvement in signal efficiency and background rejection when compared to previous non-CNN-based analyses. [Figure not available: see fulltext.]

Published
2021

5. Low-diffusion Xe-He gas mixtures for rare-event detection: electroluminescence yield

Author

Fernandes, AFM, Henriques, CAO, Mano, RDP, González-Díaz, D, Azevedo, CDR, Silva, PAOC, Gómez-Cadenas, JJ, Freitas, EDC, Fernandes, LMP, Monteiro, CMB, Adams, C, Álvarez, V, Arazi, L, Arnquist, IJ, Bailey, K, Ballester, F, Benlloch-Rodríguez, JM, Borges, FIGM, Byrnes, N, Cárcel, S, Carrión, JV, Cebrián, S, Church, E, Conde, CAN, Contreras, T, Díaz, G, Díaz, J, Diesburg, M, Escada, J, Esteve, R, Felkai, R, Ferrario, P, Ferreira, AL, Generowicz, J, Ghosh, S, Goldschmidt, A, Guenette, R, Gutiérrez, RM, Haefner, J, Hafidi, K, Hauptman, J, Hernando Morata, JA, Herrero, P, Herrero, V, Ifergan, Y, Johnston, S, Jones, BJP, Kekic, M, Labarga, L, Laing, A, Lebrun, P, López-March, N, Losada, M, Martín-Albo, J, Martínez, A, Martínez-Lema, G, McDonald, AD, Monrabal, F, Mora, FJ, Muñoz Vidal, J, Novella, P, Nygren, DR, Palmeiro, B, Para, A, Pérez, J, Psihas, F, Querol, M, Renner, J, Repond, J, Riordan, S, Ripoll, L, Rodríguez García, Y, Rodríguez, J, Rogers, L, Romeo, B, Romo-Luque, C, Santos, FP, dos Santos, JMF, Simón, A, Sofka, C, Sorel, M, Stiegler, T, Toledo, JF, Torrent, J, Usón, A, Veloso, JFCA, Webb, R, Weiss-Babai, R, White, JT, Woodruff, K, and Yahlali, N

Subjects
Prevention, Mathematical Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract

High pressure xenon Time Projection Chambers (TPC) based on secondary scintillation (electroluminescence) signal amplification are being proposed for rare event detection such as directional dark matter, double electron capture and double beta decay detection. The discrimination of the rare event through the topological signature of primary ionisation trails is a major asset for this type of TPC when compared to single liquid or double-phase TPCs, limited mainly by the high electron diffusion in pure xenon. Helium admixtures with xenon can be an attractive solution to reduce the electron diffu- sion significantly, improving the discrimination efficiency of these optical TPCs. We have measured the electroluminescence (EL) yield of Xe–He mixtures, in the range of 0 to 30% He and demonstrated the small impact on the EL yield of the addition of helium to pure xenon. For a typical reduced electric field of 2.5 kV/cm/bar in the EL region, the EL yield is lowered by ∼ 2%, 3%, 6% and 10% for 10%, 15%, 20% and 30% of helium concentration, respectively. This decrease is less than what has been obtained from the most recent simulation framework in the literature. The impact of the addition of helium on EL statistical fluctuations is negligible, within the experimental uncertainties. The present results are an important benchmark for the simulation tools to be applied to future optical TPCs based on Xe-He mixtures. [Figure not available: see fulltext.].

Published
2020

6. Demonstration of the event identification capabilities of the NEXT-White detector

Author

Ferrario, P, Benlloch-Rodríguez, JM, Díaz López, G, Hernando Morata, JA, Kekic, M, Renner, J, Usón, A, Gómez-Cadenas, JJ, Adams, C, Álvarez, V, Arazi, L, Arnquist, IJ, Azevedo, CDR, Bailey, K, Ballester, F, Borges, FIGM, Byrnes, N, Cárcel, S, Carrión, JV, Cebrían, S, Church, E, Conde, CAN, Contreras, T, Díaz, J, Diesburg, M, Escada, J, Esteve, R, Felkai, R, Fernandes, AFM, Fernandes, LMP, Ferreira, AL, Freitas, EDC, Generowicz, J, Ghosh, S, Goldschmidt, A, González-Díaz, D, Guenette, R, Gutíerrez, RM, Haefner, J, Hafidi, K, Hauptman, J, Henriques, CAO, Herrero, P, Herrero, V, Ifergan, Y, Johnston, S, Jones, BJP, Labarga, L, Laing, A, Lebrun, P, López-March, N, Losada, M, Mano, RDP, Martín-Albo, J, Martínez, A, Martínez-Lema, G, McDonald, AD, Monrabal, F, Monteiro, CMB, Mora, FJ, Muñoz Vidal, J, Novella, P, Nygren, DR, Palmeiro, B, Para, A, Pérez, J, Psihas, F, Querol, M, Repond, J, Riordan, S, Ripoll, L, Rodríguez García, Y, Rodríguez, J, Rogers, L, Romeo, B, Romo-Luque, C, Santos, FP, dos Santos, JMF, Simón, A, Sofka, C, Sorel, M, Stiegler, T, Toledo, JF, Torrent, J, Veloso, JFCA, Webb, R, Weiss-Babai, R, White, JT, Woodruff, K, and Yahlali, N

Subjects
Mathematical Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract

In experiments searching for neutrinoless double-beta decay, the possibility of identifying the two emitted electrons is a powerful tool in rejecting background events and therefore improving the overall sensitivity of the experiment. In this paper we present the first measurement of the efficiency of a cut based on the different event signatures of double and single electron tracks, using the data of the NEXT-White detector, the first detector of the NEXT experiment operating underground. Using a 228Th calibration source to produce signal-like and background-like events with energies near 1.6 MeV, a signal efficiency of 71.6 ± 1.5 stat± 0.3 sys% for a background acceptance of 20.6 ± 0.4 stat± 0.3 sys% is found, in good agreement with Monte Carlo simulations. An extrapolation to the energy region of the neutrinoless double beta decay by means of Monte Carlo simulations is also carried out, and the results obtained show an improvement in background rejection over those obtained at lower energies. [Figure not available: see fulltext.]

Published
2019

7. Radiogenic backgrounds in the NEXT double beta decay experiment

Author

Novella, P, Palmeiro, B, Sorel, M, Usón, A, Ferrario, P, Gómez-Cadenas, JJ, Adams, C, Álvarez, V, Arazi, L, Arnquist, IJ, Azevedo, CDR, Bailey, K, Ballester, F, Benlloch-Rodríguez, JM, Borges, FIGM, Byrnes, N, Cárcel, S, Carrión, JV, Cebrían, S, Church, E, Conde, CAN, Contreras, T, Díaz, G, Díaz, J, Diesburg, M, Escada, J, Esteve, R, Felkai, R, Fernandes, AFM, Fernandes, LMP, Ferreira, AL, Freitas, EDC, Generowicz, J, Ghosh, S, Goldschmidt, A, Gonźalez-Díaz, D, Guenette, R, Gutiérrez, RM, Haefner, J, Hafidi, K, Hauptman, J, Henriques, CAO, Hernando Morata, JA, Herrero, P, Herrero, V, Ifergan, Y, Johnston, S, Jones, BJP, Kekic, M, Labarga, L, Laing, A, Lebrun, P, López-March, N, Losada, M, Mano, RDP, Martín-Albo, J, Martínez, A, Martínez-Lema, G, McDonald, AD, Monrabal, F, Monteiro, CMB, Mora, FJ, Muñoz Vidal, J, Nygren, DR, Para, A, Pérez, J, Psihas, F, Querol, M, Renner, J, Repond, J, Riordan, S, Ripoll, L, Rodríguez García, Y, Rodríguez, J, Rogers, L, Romeo, B, Romo-Luque, C, Santos, FP, dos Santos, JMF, Simón, A, Sofka, C, Stiegler, T, Toledo, JF, Torrent, J, Veloso, JFCA, Webb, R, Weiss-Babai, R, White, JT, Woodruff, K, and Yahlali, N

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, Dark Matter and Double Beta Decay, Mathematical Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Mathematical physics, Nuclear and plasma physics, Particle and high energy physics
Abstract

Natural radioactivity represents one of the main backgrounds in the search for neutrinoless double beta decay. Within the NEXT physics program, the radioactivity- induced backgrounds are measured with the NEXT-White detector. Data from 37.9 days of low-background operations at the Laboratorio Subterráneo de Canfranc with xenon depleted in 136Xe are analyzed to derive a total background rate of (0.84±0.02) mHz above 1000 keV. The comparison of data samples with and without the use of the radon abatement system demonstrates that the contribution of airborne-Rn is negligible. A radiogenic background model is built upon the extensive radiopurity screening campaign conducted by the NEXT collaboration. A spectral fit to this model yields the specific contributions of 60Co, 40K, 214Bi and 208Tl to the total background rate, as well as their location in the detector volumes. The results are used to evaluate the impact of the radiogenic backgrounds in the double beta decay analyses, after the application of topological cuts that reduce the total rate to (0.25±0.01) mHz. Based on the best-fit background model, the NEXT-White median sensitivity to the two-neutrino double beta decay is found to be 3.5σ after 1 year of data taking. The background measurement in a Qββ±100 keV energy window validates the best-fit background model also for the neutrinoless double beta decay search with NEXT-100. Only one event is found, while the model expectation is (0.75±0.12) events. [Figure not available: see fulltext.].

Published
2019

8. Energy calibration of the NEXT-White detector with 1% resolution near Qββ of 136Xe

Author

Renner, J, Díaz López, G, Ferrario, P, Hernando Morata, JA, Kekic, M, Martínez-Lema, G, Monrabal, F, Gómez-Cadenas, JJ, Adams, C, Álvarez, V, Arazi, L, Arnquist, IJ, Azevedo, CDR, Bailey, K, Ballester, F, Benlloch-Rodríguez, JM, Borges, FIGM, Byrnes, N, Cárcel, S, Carrión, JV, Cebrián, S, Church, E, Conde, CAN, Contreras, T, Díaz, J, Diesburg, M, Escada, J, Esteve, R, Felkai, R, Fernandes, AFM, Fernandes, LMP, Ferreira, AL, Freitas, EDC, Generowicz, J, Ghosh, S, Goldschmidt, A, González-Díaz, D, Guenette, R, Gutiérrez, RM, Haefner, J, Hafidi, K, Hauptman, J, Henriques, CAO, Herrero, P, Herrero, V, Ifergan, Y, Johnston, S, Jones, BJP, Labarga, L, Laing, A, Lebrun, P, López-March, N, Losada, M, Mano, RDP, Martín-Albo, J, Martínez, A, McDonald, AD, Monteiro, CMB, Mora, FJ, Muñoz Vidal, J, Novella, P, Nygren, DR, Palmeiro, B, Para, A, Pérez, J, Psihas, F, Querol, M, Repond, J, Riordan, S, Ripoll, L, Rodríguez García, Y, Rodríguez, J, Rogers, L, Romeo, B, Romo-Luque, C, Santos, FP, dos Santos, JMF, Simón, A, Sofka, C, Sorel, M, Stiegler, T, Toledo, JF, Torrent, J, Usón, A, Veloso, JFCA, Webb, R, Weiss-Babai, R, White, JT, Woodruff, K, and Yahlali, N

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Synchrotrons and Accelerators, Physical Sciences, Bioengineering, Affordable and Clean Energy, Dark Matter and Double Beta Decay, Mathematical Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Mathematical physics, Nuclear and plasma physics, Particle and high energy physics
Abstract

Excellent energy resolution is one of the primary advantages of electroluminescent high-pressure xenon TPCs. These detectors are promising tools in searching for rare physics events, such as neutrinoless double-beta decay (ββ0ν), which require precise energy measurements. Using the NEXT-White detector, developed by the NEXT (Neutrino Experiment with a Xenon TPC) collaboration, we show for the first time that an energy resolution of 1% FWHM can be achieved at 2.6 MeV, establishing the present technology as the one with the best energy resolution of all xenon detectors for ββ0ν searches. [Figure not available: see fulltext.]

Published
2019

9. Energy calibration of the NEXT-White detector with 1% resolution near Q ββ of 136Xe

Author

Renner, J, Díaz López, G, Ferrario, P, Hernando Morata, JA, Kekic, M, Martínez-Lema, G, Monrabal, F, Gómez-Cadenas, JJ, Adams, C, Álvarez, V, Arazi, L, Arnquist, IJ, Azevedo, CDR, Bailey, K, Ballester, F, Benlloch-Rodríguez, JM, Borges, FIGM, Byrnes, N, Cárcel, S, Carrión, JV, Cebrián, S, Church, E, Conde, CAN, Contreras, T, Díaz, J, Diesburg, M, Escada, J, Esteve, R, Felkai, R, Fernandes, AFM, Fernandes, LMP, Ferreira, AL, Freitas, EDC, Generowicz, J, Ghosh, S, Goldschmidt, A, González-Díaz, D, Guenette, R, Gutiérrez, RM, Haefner, J, Hafidi, K, Hauptman, J, Henriques, CAO, Herrero, P, Herrero, V, Ifergan, Y, Johnston, S, Jones, BJP, Labarga, L, Laing, A, Lebrun, P, López-March, N, Losada, M, Mano, RDP, Martín-Albo, J, Martínez, A, McDonald, AD, Monteiro, CMB, Mora, FJ, Muñoz Vidal, J, Novella, P, Nygren, DR, Palmeiro, B, Para, A, Pérez, J, Psihas, F, Querol, M, Repond, J, Riordan, S, Ripoll, L, Rodríguez García, Y, Rodríguez, J, Rogers, L, Romeo, B, Romo-Luque, C, Santos, FP, dos Santos, JMF, Simón, A, Sofka, C, Sorel, M, Stiegler, T, Toledo, JF, Torrent, J, Usón, A, Veloso, JFCA, Webb, R, Weiss-Babai, R, White, JT, Woodruff, K, and Yahlali, N

Subjects
Dark Matter and Double Beta Decay, Bioengineering, Nuclear & Particles Physics, Mathematical Sciences, Physical Sciences, Mathematical Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics
Abstract

Excellent energy resolution is one of the primary advantages of electroluminescent high-pressure xenon TPCs. These detectors are promising tools in searching for rare physics events, such as neutrinoless double-beta decay (ββ0ν), which require precise energy measurements. Using the NEXT-White detector, developed by the NEXT (Neutrino Experiment with a Xenon TPC) collaboration, we show for the first time that an energy resolution of 1% FWHM can be achieved at 2.6 MeV, establishing the present technology as the one with the best energy resolution of all xenon detectors for ββ0ν searches. [Figure not available: see fulltext.]

Published
2019

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