New approach to the calculation of the refractive index of liquid and solid xenon

Hitachi, A.; Chepel, V.; Lopes, I.; Solovov, V.

doi:10.1063/1.2136879

Cited by 22 publications

(16 citation statements)

References 30 publications

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“…The LXe index of refraction was calculated using the approach in Ref. [61] which is in agreement with measurements [62]. Measurements of the absorption (λ abs ) and Rayleigh scattering (λ scat ) lengths at 175 nm wavelength [63], with sufficient sensitivity for the light propagation model, are difficult to obtain.…”

Section: Scintillation Energysupporting

confidence: 52%

nEXO: neutrinoless double beta decay search beyond 10²⁸ year half-life sensitivity

Adhikari

Kharusi

Angelico

et al. 2021

J. Phys. G: Nucl. Part. Phys.

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The nEXO neutrinoless double beta (0νββ) decay experiment is designed to use a time projection chamber and 5000 kg of isotopically enriched liquid xenon to search for the decay in 136Xe. Progress in the detector design, paired with higher fidelity in its simulation and an advanced data analysis, based on the one used for the final results of EXO-200, produce a sensitivity prediction that exceeds the half-life of 1028 years. Specifically, improvements have been made in the understanding of production of scintillation photons and charge as well as of their transport and reconstruction in the detector. The more detailed knowledge of the detector construction has been paired with more assays for trace radioactivity in different materials. In particular, the use of custom electroformed copper is now incorporated in the design, leading to a substantial reduction in backgrounds from the intrinsic radioactivity of detector materials. Furthermore, a number of assumptions from previous sensitivity projections have gained further support from interim work validating the nEXO experiment concept. Together these improvements and updates suggest that the nEXO experiment will reach a half-life sensitivity of 1.35 × 1028 yr at 90% confidence level in 10 years of data taking, covering the parameter space associated with the inverted neutrino mass ordering, along with a significant portion of the parameter space for the normal ordering scenario, for almost all nuclear matrix elements. The effects of backgrounds deviating from the nominal values used for the projections are also illustrated, concluding that the nEXO design is robust against a number of imperfections of the model.

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Section: Scintillation Energysupporting

confidence: 52%

nEXO: neutrinoless double beta decay search beyond 10²⁸ year half-life sensitivity

Adhikari

Kharusi

Angelico

et al. 2021

J. Phys. G: Nucl. Part. Phys.

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“…The monochromator output spectrum has been calibrated to provide light around 178 nm close to the peak LXe scintillation wavelength [19]. This calibration is described in [27] and is crucial given the strong wavelength dependence of the refractive index of LXe [30]. No polarization effect is mentioned by McPherson for the monochromator so the light output is assumed Compressors for the cryoheads are on the bottom (4c/d).…”

Section: Measurement Setupmentioning

confidence: 99%

Reflectivity of VUV-sensitive Silicon Photomultipliers in Liquid Xenon

Wagenpfeil,

Ziegler,

Schneider

et al. 2021

Preprint

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Silicon photomultipliers are regarded as a very promising technology for next-generation, cutting-edge detectors for low-background experiments in particle physics. This work presents systematic reflectivity studies of Silicon Photomultipliers (SiPM) and other samples in liquid xenon at vacuum ultraviolet (VUV) wavelengths. A dedicated setup at the University of Münster has been used that allows to acquire angle-resolved reflection measurements of various samples immersed in liquid xenon with 0.45 • angular resolution. Four samples are investigated in this work: one Hamamatsu VUV4 SiPM, one FBK VUV-HD SiPM, one FBK wafer sample and one Large-Area Avalanche Photodiode (LA-APD) from EXO-200. The reflectivity is determined to be 25-36 % at an angle of incidence of 20 • for the four samples and increases to up to 65 % at 70 • for the LA-APD and the FBK samples. The Hamamatsu VUV4 SiPM shows a decline with increasing angle of incidence. The reflectivity results will be incorporated in upcoming light response simulations of the nEXO detector.

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“…Noble gases have been chosen because they are devoid of Raman scattering [33,34], which eliminates the usual main source of noise in fibered photon-pair generation. The Sellmeier equations of xenon and argon are taken from [35,36] and their non-linear indices are n 2 = 9.2 10 −21 and 0.8 10 −21 m 2 /W/bar, respectively.…”

Section: Active Tunability Of the Jsimentioning

confidence: 99%

Active engineering of four-wave mixing spectral correlations in multiband hollow-core fibers

Cordier¹,

Orieux²,

Debord³

et al. 2019

Opt. Express

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We demonstrate theoretically and experimentally a high level of control of the four-wave mixing process in an inert gas filled inhibited-coupling guiding hollow-core photonic crystal fiber in order to generate photon pairs. The specific multiple-branch dispersion profile in such fibers allows both entangled and separable bi-photon states to be produced. By controlling the choice of gas, its pressure and the fiber length, we experimentally generate various joint spectral intensity profiles in a stimulated regime that is transferable to the spontaneous regime. The generated profiles cover both spectrally separable and entangled bi-photons and feature frequency tuning over 17 THz, demonstrating the large dynamic control offered by such a photon pair source.

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New approach to the calculation of the refractive index of liquid and solid xenon

Cited by 22 publications

References 30 publications

nEXO: neutrinoless double beta decay search beyond 10²⁸ year half-life sensitivity

nEXO: neutrinoless double beta decay search beyond 10²⁸ year half-life sensitivity

Reflectivity of VUV-sensitive Silicon Photomultipliers in Liquid Xenon

Active engineering of four-wave mixing spectral correlations in multiband hollow-core fibers

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New approach to the calculation of the refractive index of liquid and solid xenon

Cited by 22 publications

References 30 publications

nEXO: neutrinoless double beta decay search beyond 1028 year half-life sensitivity

nEXO: neutrinoless double beta decay search beyond 1028 year half-life sensitivity

Reflectivity of VUV-sensitive Silicon Photomultipliers in Liquid Xenon

Active engineering of four-wave mixing spectral correlations in multiband hollow-core fibers

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Product

Resources

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nEXO: neutrinoless double beta decay search beyond 10²⁸ year half-life sensitivity

nEXO: neutrinoless double beta decay search beyond 10²⁸ year half-life sensitivity