Novel measurement method of heat and light detection for neutrinoless double beta decay

Kim, G.B.; Choi, Jun‐Ho; Jo, H. S.; Kang, Chu-Shik; Kim, H.L.; Kim, Il Ho; Kim, S.R.; Kim, Yoon Hak; Lee, C.; Lee, H.J.; Lee, M.K.; Li, J.; Oh, S. Y.; So, J. H.

doi:10.1016/j.astropartphys.2017.02.009

Cited by 47 publications

(42 citation statements)

References 34 publications

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“…Yemi) will be completed and experimental operation will commence (see figure 3). In addition to spaces for the upgraded COSINE [34] dark matter and AMoRE-II [35] 0νββ search experiments, a cavern suitable for hosting a ∼3 kiloton neutrino detector…”

Section: A Neutrino Detector For Yemilabmentioning

confidence: 99%

Dark photon search at Yemilab, Korea

Seo

Kim

2021

J. High Energ. Phys.

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Dark photons are well motivated hypothetical dark sector particles that could account for observations that cannot be explained by the standard model of particle physics. A search for dark photons that are produced by an electron beam striking a thick tungsten target and subsequently interact in a 3 kiloton-scale neutrino detector in Yemilab, a new underground lab in Korea, is proposed. Dark photons can be produced by “darkstrahlung” or by oscillations from ordinary photons produced in the target and detected by their visible decays, “absorption” or by their oscillation to ordinary photons. By detecting the absorption process or the oscillation-produced photons, a world’s best sensitivity for measurements of the dark-photon kinetic mixing parameter of ϵ2> 1.5 × 10−13(6.1 × 10−13) at the 95% confidence level (C.L.) could be obtained for dark photon masses between 80 eV and 1 MeV in a year-long exposure to a 100 MeV–100 kW electron beam with zero (103) background events. In parallel, the detection of e+e− pairs from decays of dark photons with mass between 1 MeV and ∼86 MeV would have sensitivities of ϵ2>$$ \mathcal{O}\left({10}^{-17}\right)\left(\mathcal{O}\left({10}^{-16}\right)\right) $$ O 10 − 17 O 10 − 16 at the 95% C.L. with zero (103) background events. This is comparable to that of the Super-K experiment under the same zero background assumption.

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Section: A Neutrino Detector For Yemilabmentioning

confidence: 99%

Dark photon search at Yemilab, Korea

Seo

Kim

2021

J. High Energ. Phys.

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“…The AMoRE-Pilot detector modules are comprised of three main components, as shown in Fig. 1: a 48depl Ca 100 MoO 4 scintillating crystal, a phonon sensor based on a metallic magnetic calorimeter (MMC) that measures the temperature rise of the crystal induced by radiation absorption, and a photon detector with an MMC sensor that detects the amount of scintillation light produced in the crystal [33][34][35].…”

Section: Experimental Setup and Data Acquisitionmentioning

confidence: 99%

“…The photon detector is comprised of a 2-inch diameter, 300 µm thick germanium wafer that serves as a scintillation light absorber; an MMC sensor measures the phonon energy generated inside the germanium wafer. With this arrangement, we measure the phonon signals and scintillation light signals simultaneously; by comparing the relative amplitudes of the simultaneous signals, we can discriminate between the unwanted non-β/γ -generated events and the β/γ -like events of interest [33][34][35].…”

Section: For Phonon Detector (At the Back)mentioning

confidence: 99%

First results from the AMoRE-Pilot neutrinoless double beta decay experiment

et al. 2019

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The advanced molybdenum-based rare process experiment (AMoRE) aims to search for neutrinoless double beta decay ($$0\nu \beta \beta $$0νββ) of $$^{100}$$100Mo with $$\sim 100\,\hbox {kg}$$∼100kg of $$^{100}$$100Mo-enriched molybdenum embedded in cryogenic detectors with a dual heat and light readout. At the current, pilot stage of the AMoRE project we employ six calcium molybdate crystals with a total mass of 1.9 kg, produced from $$^{48}$$48Ca-depleted calcium and $$^{100}$$100Mo-enriched molybdenum ($$^{48{{\text {depl}}}}\hbox {Ca}^{100}\hbox {MoO}_{4}$$48deplCa100MoO4). The simultaneous detection of heat (phonon) and scintillation (photon) signals is realized with high resolution metallic magnetic calorimeter sensors that operate at milli-Kelvin temperatures. This stage of the project is carried out in the Yangyang underground laboratory at a depth of 700 m. We report first results from the AMoRE-Pilot $$0\nu \beta \beta $$0νββ search with a 111 kg day live exposure of $$^{48{{\text {depl}}}}\hbox {Ca}^{100}\hbox {MoO}_{4}$$48deplCa100MoO4 crystals. No evidence for $$0\nu \beta \beta $$0νββ decay of $$^{100}$$100Mo is found, and a upper limit is set for the half-life of $$0\nu \beta \beta $$0νββ of $$^{100}$$100Mo of $$T^{0\nu }_{1/2} > 9.5\times 10^{22}~\hbox {years}$$T1/20ν>9.5×1022years at 90% C.L. This limit corresponds to an effective Majorana neutrino mass limit in the range $$\langle m_{\beta \beta }\rangle \le (1.2-2.1)\,\hbox {eV}$$⟨mββ⟩≤(1.2-2.1)eV.

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“…ZnSe and some molybdates, in fact, show a peculiar feature: the thermal pulse induced by an α particle has a slightly faster decay time than that induced by β/γ interactions. 58,59,61,64,65,[68][69][70][71][72][73][74][75] This is a tiny (few percent) effect that allows to discern the nature of the interacting particle without light detection thus greatly simplifying the detector assembly and readout. This effect could be ascribed to the long scintillation decay time (of the order of hundreds microseconds) and the high percentage of non-radiative bellini Potentialities of the future technical improvements in the search of rare nuclear decays by bolometers 11 de-excitations of the scintillation channels, that produce delayed phonons.…”

Section: Scintillating Bolometersmentioning

confidence: 99%

Potentialities of the future technical improvements in the search of rare nuclear decays by bolometers

Bellini

2018

Int. J. Mod. Phys. A

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Bolometers are cryogenic calorimeters which feature excellent energy resolution, low energy threshold, high detection efficiency, flexibility in choice of materials, particle identification capability if operated as hybrid devices. After thirty years of rapid progresses, they represent nowadays a leading technology in several fields: particle and nuclear physics, X-ray astrophysics, cosmology. However, further and substantial developments are required to increase the sensitivity to the levels envisioned by future researches. A review of the challenges to be addressed and potentialities of bolometers in the search for rare nuclear decays is given, with particular emphasis to the neutrinoless double beta decay physics case.

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Novel measurement method of heat and light detection for neutrinoless double beta decay

Cited by 47 publications

References 34 publications

Dark photon search at Yemilab, Korea

Dark photon search at Yemilab, Korea

First results from the AMoRE-Pilot neutrinoless double beta decay experiment

Potentialities of the future technical improvements in the search of rare nuclear decays by bolometers

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