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Your search keyword '"Almazán, H."' showing total 5 results
Start Over Author "Almazán, H." Topic nuclear & particles physics
5 results on '"Almazán, H."'

1. Demonstration of event position reconstruction based on diffusion in the NEXT-white detector

Author

Haefner, J, Navarro, KE, Guenette, R, Jones, BJP, Tripathi, A, Adams, C, Almazán, H, Álvarez, V, Aparicio, B, Aranburu, AI, Arazi, L, Arnquist, IJ, Auria-Luna, F, Ayet, S, Azevedo, CDR, Bailey, K, Ballester, F, Barrio-Torregrosa, M del, Bayo, A, Benlloch-Rodríguez, JM, Borges, FIGM, Brodolin, A, Byrnes, N, Cárcel, S, Carrión, JV, Cebrián, S, Church, E, Cid, L, Conde, CAN, Contreras, T, Cossío, FP, Dey, E, Díaz, G, Dickel, T, Elorza, M, Escada, J, Esteve, R, Felkai, R, Fernandes, LMP, Ferrario, P, Ferreira, AL, Foss, FW, Freitas, EDC, Freixa, Z, Generowicz, J, Goldschmidt, A, Gómez-Cadenas, JJ, González, R, Grocott, J, Hafidi, K, Hauptman, J, Henriques, CAO, Morata, JA Hernando, Herrero-Gómez, P, Herrero, V, Hervés Carrete, C, Ifergan, Y, Labarga, L, Larizgoitia, L, Larumbe, A, Lebrun, P, Lopez, F, López-March, N, Madigan, R, Mano, RDP, Marques, AP, Martín-Albo, J, Martínez-Lema, G, Martínez-Vara, M, Meziani, ZE, Miller, RL, Mistry, K, Molina-Canteras, J, Monrabal, F, Monteiro, CMB, Mora, FJ, Muñoz Vidal, J, Novella, P, Nuñez, A, Nygren, DR, Oblak, E, Palacio, J, Palmeiro, B, Para, A, Parmaksiz, I, Pelegrin, J, Pérez Maneiro, M, Querol, M, Redwine, AB, Renner, J, Rivilla, I, Rodríguez, J, Rogero, C, Rogers, L, Romeo, B, Romo-Luque, C, Santos, FP, dos Santos, JMF, Shomroni, I, and Simón, A

Subjects
Nuclear and Plasma Physics, Synchrotrons and Accelerators, Physical Sciences, 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

Noble element time projection chambers are a leading technology for rare event detection in physics, such as for dark matter and neutrinoless double beta decay searches. Time projection chambers typically assign event position in the drift direction using the relative timing of prompt scintillation and delayed charge collection signals, allowing for reconstruction of an absolute position in the drift direction. In this paper, alternate methods for assigning event drift distance via quantification of electron diffusion in a pure high pressure xenon gas time projection chamber are explored. Data from the NEXT-White detector demonstrate the ability to achieve good position assignment accuracy for both high- and low-energy events. Using point-like energy deposits from 83mKr calibration electron captures (E∼45 keV), the position of origin of low-energy events is determined to 2 cm precision with bias

Published
2024

2. Reflectance and fluorescence characteristics of PTFE coated with TPB at visible, UV, and VUV as a function of thickness

Author

Haefner, J, Fahs, A, Ho, J, Stanford, C, Guenette, R, Adams, C, Almazán, H, Álvarez, V, Aparicio, B, Aranburu, AI, Arazi, L, Arnquist, IJ, Auria-Luna, F, Ayet, S, Azevedo, CDR, Bailey, K, Ballester, F, Benlloch-Rodríguez, JM, Borges, FIGM, Bounasser, S, Byrnes, N, Cárcel, S, Carrión, JV, Cebrián, S, Church, E, Conde, CAN, Contreras, T, Cossío, FP, Denisenko, AA, Dey, E, Díaz, G, Dickel, T, Escada, J, Esteve, R, Felkai, R, Fernandes, LMP, Ferrario, P, Ferreira, AL, Foss, FW, Freitas, EDC, Freixa, Z, Generowicz, J, Goldschmidt, A, Gómez-Cadenas, JJ, González, R, Grocott, J, Hafidi, K, Hauptman, J, Henriques, CAO, Morata, JA Hernando, Herrero-Gómez, P, Herrero, V, Ho, P, Ifergan, Y, Jones, BJP, Kekic, M, Labarga, L, Larizgoitia, L, Lebrun, P, Gutierrez, D Lopez, López-March, N, Madigan, R, Mano, RDP, Martín-Albo, J, Martínez-Lema, G, Martínez-Vara, M, Marques, AP, Meziani, ZE, Miller, R, Mistry, K, Molina-Canteras, J, Monrabal, F, Monteiro, CMB, Mora, FJ, Vidal, J Muñoz, Navarro, K, Novella, P, Nuñez, A, Nygren, DR, Oblak, E, Odriozola-Gimeno, M, Palmeiro, B, Para, A, Querol, M, Redwine, AB, Renner, J, Rivilla, I, Rodríguez, J, Rogero, C, Rogers, L, Romeo, B, Romo-Luque, C, Santos, FP, dos Santos, JMF, Simón, A, Sorel, M, Teixeira, JMR, Toledo, JF, Torrent, J, and Usón, A

Subjects
Nuclear and Plasma Physics, Physical Sciences, Engineering, Nuclear & Particles Physics, Physical sciences
Abstract

Polytetrafluoroethylene (PTFE) is an excellent diffuse reflector widely used in light collection systems for particle physics experiments. In noble element systems, it is often coated with tetraphenyl butadiene (TPB) to allow detection of vacuum ultraviolet scintillation light. In this work this dependence is investigated for PTFE coated with TPB in air for light of wavelengths of 200 nm, 260 nm, and 450 nm. The results show that TPB-coated PTFE has a reflectance of approximately 92% for thicknesses ranging from 5 mm to 10 mm at 450 nm, with negligible variation as a function of thickness within this range. A cross-check of these results using an argon chamber supports the conclusion that the change in thickness from 5 mm to 10 mm does not affect significantly the light response at 128 nm. Our results indicate that pieces of TPB-coated PTFE thinner than the typical 10 mm can be used in particle physics detectors without compromising the light signal.

Published
2023

3. The dynamics of ions on phased radio-frequency carpets in high pressure gases and application for barium tagging in xenon gas time projection chambers

Author

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

Subjects
Nuclear and Plasma Physics, Physical Sciences, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Other Physical Sciences, Nuclear & Particles Physics, Nuclear and plasma physics
Abstract

Radio-frequency (RF) carpets with ultra-fine pitches are examined for ion transport in gases at atmospheric pressures and above. We develop new analytic and computational methods for modeling RF ion transport at densities where dynamics are strongly influenced by buffer gas collisions. An analytic description of levitating and sweeping forces from phased arrays is obtained, then thermodynamic and kinetic principles are used to calculate ion loss rates in the presence of collisions. This methodology is validated against detailed microscopic SIMION simulations. We then explore a parameter space of special interest for neutrinoless double beta decay experiments: transport of barium ions in xenon at pressures from 1 to 10 bar. Our computations account for molecular ion formation and pressure dependent mobility as well as finite temperature effects. We discuss the challenges associated with achieving suitable operating conditions, which lie beyond the capabilities of existing devices, using presently available or near-future manufacturing techniques.

Published
2022

4. 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

5. Measurement of the Xe136 two-neutrino double-β-decay half-life via direct background subtraction in NEXT

Author

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

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

We report a measurement of the half-life of the Xe136 two-neutrino double-β decay performed with a novel direct-background-subtraction technique. The analysis relies on the data collected with the NEXT-White detector operated with Xe136-enriched and Xe136-depleted xenon, as well as on the topology of double-electron tracks. With a fiducial mass of only 3.5 kg of Xe, a half-life of 2.34-0.46+0.80(stat)-0.17+0.30(sys)×1021yr is derived from the background-subtracted energy spectrum. The presented technique demonstrates the feasibility of unique background-model-independent neutrinoless double-β-decay searches.

Published
2022

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