Light yield of cold undoped CsI crystal down to 13 keV and the application of such crystals in neutrino detection

Ding, K.; Chernyak, D.; Liu, J.

doi:10.1140/epjc/s10052-020-08712-2

Cited by 13 publications

(14 citation statements)

References 63 publications

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“…The light yield in a lower energy range was measured using an Am-241 source inside the cryostat. An average yield of ∼33 PE/keVee from 13 to 60 keVee was observed in this measurement [99]. Recently, two SensL SiPMs were used to read out a small cubic CsI crystal.…”

Section: Current Statusmentioning

confidence: 52%

“…Other potential problems of a SiPM include afterpulses [98] and optical crosstalk [86,91,92,97]. Mitigation methods have been discussed in detail in a recent publications [99].…”

Section: Sipm Arrays and Readout Electronicsmentioning

confidence: 99%

“…V. Even higher light yields may be achievable when the detector is operated at 40 K with SiPMs that have higher PDE. [78,99,105] and predicted light yields of undoped CsI compared to that of the COHERENT CsI[Na] detector [3].…”

Section: Current Statusmentioning

confidence: 99%

“…CsI[Na] 13.5 ± 0.1 [3] PMT+small crystal undoped CsI 20.4 ± 0.8 [78] PMTs+large crystal undoped CsI 26.0 ± 0.4 [105] Improved light collection undoped CsI 33.5 ± 0.7 [99] PMT → SiPMs undoped CsI 38.9 ± 0.…”

Section: Experiments Type Of Crystals Light Yield [Pe/kevee] Coherent...mentioning

confidence: 99%

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The COHERENT Experimental Program

Akimov¹,

Alawabdeh²,

An³

et al. 2022

Preprint

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The COHERENT experiment located in Neutrino Alley at the Spallation Neutron Source (SNS), Oak Ridge National Laboratory (ORNL), has made the world's first two measurements of coherent elastic neutrino-nucleus scattering (CEvNS), on CsI and argon, using neutrinos produced at the SNS. The COHERENT collaboration continues to pursue CEvNS measurements on various targets as well as additional studies of inelastic neutrino-nucleus interactions, searches for accelerator-produced dark matter (DM) and physics beyond the Standard Model, using the uniquely high-quality and high-intensity neutrino source available at the SNS. This white paper describes primarily COHERENT's ongoing and near-future program at the SNS First Target Station (FTS). Opportunities enabled by the SNS Second Target Station (STS) for the study of neutrino physics and development of novel detector technologies are elaborated in a separate white paper.

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Section: Current Statusmentioning

confidence: 52%

“…Other potential problems of a SiPM include afterpulses [98] and optical crosstalk [86,91,92,97]. Mitigation methods have been discussed in detail in a recent publications [99].…”

Section: Sipm Arrays and Readout Electronicsmentioning

confidence: 99%

Section: Current Statusmentioning

confidence: 99%

Section: Experiments Type Of Crystals Light Yield [Pe/kevee] Coherent...mentioning

confidence: 99%

See 2 more Smart Citations

The COHERENT Experimental Program

Akimov¹,

Alawabdeh²,

An³

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…When combined with photo-sensors working at cryogenic temperatures, the light yield of these crystals can be at least twice as high as that of Tl-or Na-doped CsI operated at room temperature [4]. The light yields of undoped CsI crystals from SICCAS, AMCRYS, and OKEN, with various sizes, from 13 keV to 2.6 MeV, and directly coupled with PMTs or SiPMs at liquid nitrogen temperature were systematically examined [5][6][7][8][9]. The highest light yield obtained was 43.0 PE/keV ee , achieved with a small crystal coupled to two SensL J-series SiPMs [9].…”

Section: Introductionmentioning

confidence: 99%

Performance of a liquid nitrogen cryostat for the study of nuclear recoils in undoped CsI crystals

Ding¹,

Liu²,

Y.³

et al. 2023

Preprint

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There is a global trend to increase the light yield of CsI scintillators used in neutrino and dark matter detection by operating undoped crystals at cryogenic temperatures. However, high light yield alone is not sufficient to guarantee a low-energy threshold. The response of undoped crystals to nuclear recoils at cryogenic temperatures is equally important. A liquid nitrogen-based cryostat was developed to measure the nuclear quenching factor of a small undoped CsI crystal using monoenergetic neutron beams at the Triangle Universities Nuclear Laboratory (TUNL). To avoid neutron scattering in high-Z materials, these materials were intentionally reduced around the crystal. The structure and performance of the cryostat are described in detail. Using this cryostat, a light yield of 33.4 ± 1.7 photoelectrons per keV electron-equivalent (PE/keV ee ) was observed at 5.9 keV ee , enabling the measurement of nuclear quenching factors at very low energies. The results of the quenching factor measurement will be reported in a subsequent paper.Non-negligible overshoot was observed in the tails of the observed light pulses. The origin of this issue and the correction procedure are described in detail. This information may be useful for others who encounter similar technical challenges.

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Flavor-dependent radiative corrections in coherent elastic neutrino-nucleus scattering

Tomalak

Machado

Pandey

et al. 2021

J. High Energ. Phys.

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We calculate coherent elastic neutrino-nucleus scattering cross sections on spin-0 nuclei (e.g. 40Ar and 28Si) at energies below 100 MeV within the Standard Model and account for all effects of permille size. We provide a complete error budget including uncertainties at nuclear, nucleon, hadronic, and quark levels separately as well as perturbative error. Our calculation starts from the four-fermion effective field theory to explicitly separate heavy-particle mediated corrections (which are absorbed by Wilson coefficients) from light-particle contributions. Electrons and muons running in loops introduce a non- trivial dependence on the momentum transfer due to their relatively light masses. These same loops, and those mediated by tau leptons, break the flavor universality because of mass-dependent electromagnetic radiative corrections. Nuclear physics uncertainties significantly cancel in flavor asymmetries resulting in subpercent relative errors. We find that for low neutrino energies, the cross section can be predicted with a relative precision that is competitive with neutrino-electron scattering. We highlight potentially useful applications of such a precise cross section prediction ranging from precision tests of the Standard Model, to searches for new physics and to the monitoring of nuclear reactors.

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Light yield of cold undoped CsI crystal down to 13 keV and the application of such crystals in neutrino detection

Abstract: The light yield of an undoped CsI crystal at about 77 Kelvin was measured to be $$33.5 \, \pm \, 0.7$$ 33.5 ± 0.7 photo-electrons (PE) per keV electron-equivalent (keVee) in the energy range of [13, 60] keVee using X and $$\gamma $$ γ -rays from an $$^{241}$$ 241 … Show more

Cited by 13 publications

References 63 publications

The COHERENT Experimental Program

The COHERENT Experimental Program

Performance of a liquid nitrogen cryostat for the study of nuclear recoils in undoped CsI crystals

Flavor-dependent radiative corrections in coherent elastic neutrino-nucleus scattering

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