Secondary scintillation yield of xenon with sub-percent levels of CO2 additive for rare-event detection

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

doi:10.1016/j.physletb.2017.09.017

Cited by 27 publications

(31 citation statements)

References 44 publications

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“…After one meter of drift, a point-like ionization deposit becomes a cloud distributed as a gaussian of 10 mm sigma in the direction perpendicular to the electric field (transverse) and 4 mm in the parallel direction (longitudinal). This situation is far from ideal and can be largely improved by adding molecular electron coolants to the gas [5,6] or by positive-ion detection [7]. As a reference, the thermal diffusion limit which can be found in [8] gives a diffusion factor of ∼1.5 mm/ √ m for a field of 250 V/cm, which is very close to the ∼2.5 mm/ √ m value obtained for instance in Xe/CO 2 mixtures [6].…”

Section: Introductionsupporting

confidence: 63%

Helium–Xenon mixtures to improve the topological signature in high pressure gas xenon TPCs

Felkai

Monrabal

González-Díaz³

et al. 2018

Nuclear Instruments and Methods in Physics Research Section A:

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Within the framework of xenon-based double beta decay experiments, we propose the possibility to improve the background rejection of an electroluminescent Time Projection Chamber (EL TPC) by reducing the diffusion of the drifting electrons while keeping nearly intact the energy resolution of a pure xenon EL TPC. Based on state-of-the-art microscopic simulations, a substantial addition of helium, around 10 or 15 %, may reduce drastically the transverse diffusion down to 2.5 mm/ √ m from the 10.5 mm/ √ m of pure xenon. The longitudinal diffusion remains around 4 mm/ √ m. Light production studies have been performed as well. They show that the relative variation in energy resolution introduced by such a change does not exceed a few percent, which leaves the energy resolution practically unchanged. The technical caveats of using photomultipliers close to an helium atmosphere are also discussed in detail.

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Section: Introductionsupporting

confidence: 63%

Helium–Xenon mixtures to improve the topological signature in high pressure gas xenon TPCs

Felkai

Monrabal

González-Díaz³

et al. 2018

Nuclear Instruments and Methods in Physics Research Section A:

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“…28),n pe the total number of detected photoelectrons, Ω EL the solid angle covered for a pointlike source crossing the EL region and h its size. Due to its smallness, the experimental determination of Q is extremely difficult, and it has been performed to date only for electronegative mixtures [59]. Fig.…”

Section: Charge Detection (Ii Secondary Scintillation)mentioning

confidence: 99%

“…42, [259]). The relation between electron cooling and VUV-quenching is so intertwined in TPCs that it has taken a long time to realize and demonstrate that they can be adjusted independently to some extent, for instance leading to a low diffusion and weakly VUV-quenched mixture [59], an important asset for chambers based on electroluminescence.…”

Section: The Role Of Gas Mixturementioning

confidence: 99%

“…Besides imaging the primary ionization with high accuracy they can, in some configurations, retrieve essential information from the gas scintillation, too. As we will see throughout the text, and in particular in section 6, there are numerous hints that future TPCs will be able to do more than 'just' that (e.g., [45,[55][56][57][58][59][60]. [61]; b) LUX, the dual-phase (optically read) xenon TPC for dark matter searches at the Sanford Underground Research Facility (SURF) [62]; c) NEW, the high pressure xenon TPC (optically read) developed for phase-I of the ββ0ν experiment NEXT, at Laboratorio Subterráneo de Canfranc (LSC) [12,63]; d) phase-I of the (Micromegas-based) Active Target TPC (AT-TPC), at the Facility for Rare Isotope Beams (FRIB) in Michigan [34]; e) 3 × 1 × 1 m 3 dual-phase argon prototype based on LEMs/thick GEMs for the far detector of the neutrino oscillation experiment DUNE [64]; f) The DarkSide-50 dual-phase argon detector for dark matter searches at Laboratori Nazionali del Gran Sasso (LNGS) [43].…”

Section: Introductionmentioning

confidence: 99%

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Gaseous and dual-phase time projection chambers for imaging rare processes

González-Díaz

Monrabal

Murphy

2018

Nuclear Instruments and Methods in Physics Research Section A:

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“…Operation in this regime has two marked advantages: i) it reduces the dark count rate of the SiPMs by a factor 300 and ii) it permits operation at a lower pressure than NEXT-100 (15 bar at 293 K) for the same gas density, as shown in figure 1. Reducing the pressure, in turn, simplifies the construction of future larger detectors; c) operation of the detector with a low diffusion mixture, for example a 0.85/0.15 xenon/helium mixture [Felkai et al, 2018], which reduces the large transverse diffusion of natural xenon gas from 10 mm/ √ m to 2 mm/ √ m, resulting in sharper reconstructed images for the electron trajectories and improving the performance of the topological signature [Renner et al, 2017] -other possible mixtures have been investigated in [Henriques et al, 2017]-.…”

Section: Exploring the Inverted Hierarchy With Next-20mentioning

confidence: 99%

High Pressure Gas Xenon TPCs for Double Beta Decay Searches

2019

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This article reviews the application of high pressure gas xenon (HPXe) time projection chambers to neutrinoless double beta decay experiments. First, the fundamentals of the technology and the historical development of the field are discussed. Then, the state of the art is presented, including the prospects for the next generation of experiments with masses in the ton scale. So far, HPXe detectors have operated at ambient temperature with pressures varying between 5 bar -St.Gotthard TPC [Iqbal et al., 1987]-and 20 bar -NEXT-DBDM prototype [Álvarez et al., 2012a]-. The NEXT-White detector [Monrabal et al ., 2018] is currently taking data at 10 bar. In practice, at standard temperature, the operational pressure for ton-scale detectors will be in the range 10 bar to 20 bar. Given the density of xenon gas at a pressure of 1 bar and 300 K temperature (5.761 kg m −3 ), a HPXe TPC of 10 m 3 operating at 10 bar would hold a target mass of near 600 kg ( 1.2 ton at 20 bar). The detector dimensions, while large (e.g. 3.2 m length by 3 m diameter) appear as technically feasible. On the other hand, the NEXT demonstrators (NEXT-DEMO, NEXT-DBDM and NEXT-White) have shown excellent energy resolution and a powerful topological signature in this pressure range.However, pressure can be traded with temperature, as illustrated in figure 1, which shows the four isochoric (constant density) curves corresponding to pressures of 5, 10, 15 and 20 bar (at a temperature of 20 • C). An interesting possibility would be cooling the detector to temperatures near the liquefaction Frontiers

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Secondary scintillation yield of xenon with sub-percent levels of CO2 additive for rare-event detection

Cited by 27 publications

References 44 publications

Helium–Xenon mixtures to improve the topological signature in high pressure gas xenon TPCs

Helium–Xenon mixtures to improve the topological signature in high pressure gas xenon TPCs

Gaseous and dual-phase time projection chambers for imaging rare processes

High Pressure Gas Xenon TPCs for Double Beta Decay Searches

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