The NEXT White (NEW) detector

Monrabal, F.; Gómez-Cadenas, J.J.; Toledo, J.F.; Laing, A.; Álvarez, V.; Benlloch-Rodríguez, J.M.; Cárcel, S.; Carrión, J.V.; Esteve, R.; Felkai, R.; Herrero, V.; Martínez, A.; Musti, M.; Querol, M.; Rodríguez, J.; Simón, A.; Sofka, C.; Torrent, J.; Webb, R.; White, J. T.; Adams, C.; Arazi, L.; Azevedo, C.D.R.; Bailey, K.; Borges, F.I.G.M.; Botas, Alexandre M. P.; Cebrián, S.; Conde, C.A.N.; Díaz, Julio Pérez; Diesburg, M.; Escada, J.; Fernandes, Alexandra; Fernandes, L. M. P.; Ferrario, P.; Ferreira, A. L.; Freitas, E.D.C.; Generowicz, J.; Goldschmidt, A.; González-Díaz, D.; Guénette, R.; Gutiérrez, Rafael; Hafidi, K.; Hauptman, J. M.; Henriques, C. A. O.; Hernández, Andrés; Morata, J. A. Hernando; Johnston, S.; Jones, B. J. P.; Kekic, M.; Labarga, L.; Lebrun, P.; López-March, N.; Losada, M.; Mano, R.D.P.; Martín-Albo, J.; Martínez-Lema, G.; McDonald, A. D.; Monteiro, C. M. B.; Mora, Francisco; Vidal, J. Muñoz; Nebot-Guinot, M.; Novella, P.; Nygren, D. R.; Palmeiro, B.; Para, A.; Pérez, Javier Laso; Renner, J.; Repond, J.; Riordan, S.; Ripoll, L.; Rogers, L.; Romo-Luque, C.; Santos, F.P.; Santos, J.M.F. dos; Sorel, M.; Stiegler, T.; Veloso, J.F.C.A.; Yahlali, N.

doi:10.1088/1748-0221/13/12/p12010

Cited by 45 publications

(38 citation statements)

References 36 publications

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“…In NEXT-White (see figure 1 and also [11]), the primary (S1) and secondary (S2) scintillation are detected by an array of 12 Hamamatsu R11410-10 photomultiplier tubes (PMTs), called the "energy plane" placed 130 mm from a transparent wire mesh cathode held at negative high voltage. An electric field is established in the drift region defined by the cathode and another transparent mesh (the gate) located about 53 cm away.…”

Section: The Next-white Electroluminescent Tpcmentioning

confidence: 99%

“…• PMT saturation/baseline shift: due to the AC-coupled PMT readout scheme used in NEXT-White [11], all PMT waveforms must be passed through a deconvolution algorithm to remove distortions introduced by high-pass filtering before physics analysis. It was found that if the response of a PMT saturates, the deconvolution may lead to a shifted baseline which could lead to an error in the signal integration (energy) dependent on the length of integration in time (z).…”

Section: A the Axial Length Effectmentioning

confidence: 99%

“…The NEXT (Neutrino Experiment with a Xenon TPC) collaboration [5][6][7][8] intends to search for ββ0ν using of order 100 kg of xenon enriched to 90% in the candidate isotope 136 Xe (Q ββ = 2457.8 keV). In recent years, NEXT has developed and operated several gaseous xenon TPCs, including kg-scale detectors at Lawrence Berkeley National Lab (LBNL) and Instituto de Física Corpuscular (IFIC) [9,10] and more recently the 5 kg-scale NEXT-White 1 at the Canfranc Underground Laboratory (LSC) in the Spanish Pyrenees [11]. Previous analyses [12] of the NEXT-White energy resolution using gamma rays from 137 Cs and 232 Th sources showed an extrapolated 1% FWHM resolution at Q ββ .…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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

Renner¹,

Lopez²,

Ferrario³

et al. 2019

J. High Energ. Phys.

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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.

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Section: The Next-white Electroluminescent Tpcmentioning

confidence: 99%

Section: A the Axial Length Effectmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

Renner¹,

Lopez²,

Ferrario³

et al. 2019

J. High Energ. Phys.

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“…Several prototypes (with mass of ∼1 kg) were designed and operated in a first step to demonstrate the advantages of the technology, including a distinctive signal topology and very good energy resolution [158,159]. As a second phase, the NEXT-White demonstrator (with 5 kg of xenon) was built in Canfranc [160] and in 2020 is running smoothly, having confirmed the background discrimination capability from the topological signature [161] and shown an energy resolution of 1% (FWHM) in the region of interest [162]; energy resolution, which depends on the stability of operation parameters, wave-shifters, light detectors, and other elements, is much better in xenon gas than in liquid because the fluctuations in the ionization production are smaller than the ones due to pure Poisson statistics (Fano factor is lower than 1 in gaseous phase). NEXT-100 (with 100 kg of xenon at 15 bar) is the next stage of the program [163], built with radiopure specifications [164] as a scale up of NEXT-White by 2:1 in size; operation might start in 2021.…”

Section: Xenon Dbd Experimentsmentioning

confidence: 99%

Cosmogenic Activation in Double Beta Decay Experiments

Cebrián

2020

Universe

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Double beta decay is a very rare nuclear process and, therefore, experiments intended to detect it must be operated deep underground and in ultra-low background conditions. Long-lived radioisotopes produced by the previous exposure of materials to cosmic rays on the Earth’s surface or even underground can become problematic for the required sensitivity. Here, the studies developed to quantify and reduce the activation yields in detectors and materials used in the set-up of these experiments will be reviewed, considering target materials like germanium, tellurium and xenon together with other ones commonly used like copper, lead, stainless steel or argon. Calculations following very different approaches and measurements from irradiation experiments using beams or directly cosmic rays will be considered for relevant radioisotopes. The effect of cosmogenic activation in present and future double beta decay projects based on different types of detectors will be analyzed too.

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“…NEXT-White [ 1 ] is the phase one of NEXT-100 [ 2 ], an experiment to measure the neutrino double beta decay. The main objectives of NEXT-White are to demonstrate the High-Pressure Xenon Gas (HPGXe) TPC technology and to measure and validate the background model for the next generation of NEXT (Neutrino Experiment with a Xenon TPC) detectors.…”

Section: Introductionmentioning

confidence: 99%

The Event Detection System in the NEXT-White Detector

Bosch

Alarcón

Bosch

et al. 2021

Sensors

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This article describes the event detection system of the NEXT-White detector, a 5 kg high pressure xenon TPC with electroluminescent amplification, located in the Laboratorio Subterráneo de Canfranc (LSC), Spain. The detector is based on a plane of photomultipliers (PMTs) for energy measurements and a silicon photomultiplier (SiPM) tracking plane for offline topological event filtering. The event detection system, based on the SRS-ATCA data acquisition system developed in the framework of the CERN RD51 collaboration, has been designed to detect multiple events based on online PMT signal energy measurements and a coincidence-detection algorithm. Implemented on FPGA, the system has been successfully running and evolving during NEXT-White operation. The event detection system brings some relevant and new functionalities in the field. A distributed double event processor has been implemented to detect simultaneously two different types of events thus allowing simultaneous calibration and physics runs. This special feature provides constant monitoring of the detector conditions, being especially relevant to the lifetime and geometrical map computations which are needed to correct high-energy physics events. Other features, like primary scintillation event rejection, or a double buffer associated with the type of event being searched, help reduce the unnecessary data throughput thus minimizing dead time and improving trigger efficiency.

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The NEXT White (NEW) detector

Cited by 45 publications

References 36 publications

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

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

Cosmogenic Activation in Double Beta Decay Experiments

The Event Detection System in the NEXT-White Detector

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