Spectral modeling of scintillator for the NEMO-3 and SuperNEMO detectors

Argyriades, J.; Arnold, R.; Augier, C.; Baker, Justin; Barabash, A. S.; Bongrand, M.; Broudin-Bay, G.; Brudanin, V.; Caffrey, A.J.; Cebrián, S.; Chapon, A.; Chauveau, E.; Dafní, T.; Daraktchieva, Z.; Díaz, Julio Pérez; Durand, Dominique; Egorov, V.; Evans, Justin J.; Fatemighomi, N.; Flack, R.; Basharina-Freshville, A.; Fushimi, K.; Garrido, X.; Gómez, H.; Holin, A.; Holý, Karol; Horkley, Jared; Hubert, Ph.; Hugon, C.; Iguaz, F.J.; Irastorza, I.G.; Ishihara, N.; Jackson, C. M.; Jullian, S.; Kanamaru, S.; Kauer, M.; Kochetov, O.; Коновалов, С. И.; Kovalenko, V.; Lalanne, D.; Lang, K.; Lemière, Y.; Lutter, G.; Luzón, G.; Mamedov, F.; Marquet, Ch.; Martín-Albo, J.; Mauger, F.; Monrabal, F.; Nachab, A.; Nasteva, I.; Nemchenok, I.; Nguyen, C. H.; Nova, F.; Novella, P.; Ohsumi, H.; Pahlka, R. B.; Perrot, F.; Piquemal, F.; Povinec, P.; Richards, B.; Ricol, J. S.; Riddle, Catherine L.; Rodríguez, Arturo Rodríguez; Saakyan, R.; Sarazin, X.; Sedgbeer, J. K.; Serra, Llorenç; Simard, L.; Šimkovic, F.; Shitov, Yu.; Smolnikov, A.; Söldner-Rembold, S.; Štekl, I.; Sugaya, Y.; Sutton, C.S.; Szklarz, G.; Tamagawa, Y.; Thomas, J. C.; Thompson, Robert J.; Timkin, V.; Tretyak, V.I.; Umatov, V. I.; Vála, L.; Vanyushin, I.A.; Vasiliev, R.; Vorobel, V.; Vylov, Ts.; Waters, D.; Yahlali, N.; Žukauskas, A.

doi:10.1016/j.nima.2010.09.027

Cited by 12 publications

(8 citation statements)

References 16 publications

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“…For 𝜆 = 128 nm, the refractive index of LAr is 1.358 ± 0.03 at 90 K, and the refractive index of PS is higher than 1.68. At the TPB emission wavelength (440 nm), the refractive indexes of LAr and PS are 1.23 and 1.61 [22], respectively. The polymerization of this material was initiated by the initiator TMCH under the control of the TEMI880 temperature and humidity controller.…”

Section: The Preparation Of the Plastic Fibermentioning

confidence: 99%

Design of high-light-collection-efficiency optical fiber for germanium detectors immersed in liquid argon

Yan,

Zhang,

Liu

et al. 2024

J. Inst.

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The implementation of Slicon Photon-Multipliers (SiPMs) wave-length shifting (WLS) fibers light response system in liquid argon (LAr) is a promising technology for suppressing background in rare event experiments. Moreover, it is particularly relevant for experiments that utilize high-purity germanium (HPGe) detectors directly operated in LAr, such as the direct detection of dark matter and neutrinoless double beta decay. In this work, we exhibit a designed WLS fiber for the LAr detector, verify the feasibility of the manufacturing technology, and simulation research about its light collection performance. The novel fiber incorporates two materials, styrene and 1,1,4,4-tetraphenyl-1,3-butadiene (TPB). The pre-experiments proved that the fiber has good WLS and light-conducting properties for ultraviolet light. In addition, the effect of different light collection methods on detection efficiency was assessed by Geant4 simulation. Our results show that adding optical fibers can significantly increase light collection efficiency. Compared with the design of TPB coating with commercial fiber, the new structure of WLS fiber can improve the light collection efficiency by 50%. The simulation results indicate that the new fiber structure can enhance the light collection efficiency of the LAr detection system, thereby improving the anti-coincidence system's performance in rare event experiments.

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Section: The Preparation Of the Plastic Fibermentioning

confidence: 99%

Design of high-light-collection-efficiency optical fiber for germanium detectors immersed in liquid argon

Yan,

Zhang,

Liu

et al. 2024

J. Inst.

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“…The refractive index and absorption length were obtained from the parameters of pure plastic in Ref. [22]. The optical properties of water are taken from the detector parameters of Geant 4's own routine (examples/extended/ OpNovice).…”

Section: Construction Of Detector Model and Simulationmentioning

confidence: 99%

Simulation results of the online tritiated water measurement system

Dong

Mao

et al. 2021

NUCL SCI TECH

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Currently, the liquid scintillation method is widely used to measure the activity of tritiated water in the primary circuit of nuclear power plants, which leads to the continuous production of radioactive waste during measurement. In addition, the real-time activity information of tritiated water cannot be obtained. To solve this problem, herein we present an online tritiated water measurement method based on plastic scintillators that used the optical transport process in the Geant 4 software toolkit to build a model of plastic scintillation detection for tritiated water. Through simulation, the basic geometric dimensions of the detector were determined. In this dimension, using one detector to measure for 3 h, when the tritiated water activity was 100 Bq/L, its resolution was 16% (16 Bq/L). In addition, calculations were performed for the presence of other background signals to obtain the minimum detectable concentration.

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“…The fiber emission spectrum was taken from the manufacturer data [10] while the polystyrene light attenuation values were collected from Ref. [12]. The water optical properties were taken from Ref.…”

Section: Physics List and Materials Propertiesmentioning

confidence: 99%

“…The PMMA (optical windows), teflon and borosilicate glass (PMT windows) optical data were collected from Ref. [12] and a refraction index of 1.46 was employed for the silicon optical grease. The photon detectors (PMTs) selected for their QE and availability in the market were the Hamamatsu R2154-02.…”

Section: Physics List and Materials Propertiesmentioning

confidence: 99%

Simulation results on a real-time in water tritium monitor

Azevedo,

Baeza,

Chauveau

et al. 2020

Preprint

Self Cite

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The low energy beta emission resulting from the tritium decay is a concern from the health and governmental entities in order to keep the As Low As Reasonably Achievable (ALARA) principle. Several legislation and regulation directives have been published defining the maximum concentration in water for human consumption, for example, 100 Bq/L by European directive 2013/51/Euratom and 740 Bq/L by the U.S. Environmental Protection Agency. The challenge of the tritium decay detection is due to its weak emission requiring high sensitive devices or the most used technique, laboratory analysis using Liquid Scintillation Counting, which can take up to 4 days to achieve the low level sensitivity required by the legislation. In this work we present the simulation studies and ideas for an in-water Tritium real-time monitor based on optical scintillation fibbers. Conservative calculations allows to preview a 100 Bq/L sensitivity with 40 Bq/L of activity resolution by using a modular detector composed by 5 detection "cells" containing around 350 fibers each but passive/active shielding against natural/cosmic background as also a water purifying system is mandatory to reach such sensitivity. ⋆ This document is the results of the research project funded by INTERREG-SUDOE program through the project TRITIUM -SOE1/P4/E0214.

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Spectral modeling of scintillator for the NEMO-3 and SuperNEMO detectors

Cited by 12 publications

References 16 publications

Design of high-light-collection-efficiency optical fiber for germanium detectors immersed in liquid argon

Design of high-light-collection-efficiency optical fiber for germanium detectors immersed in liquid argon

Simulation results of the online tritiated water measurement system

Simulation results on a real-time in water tritium monitor

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