Study of fast neutron detector for COSINE-100 experiment

Adhikari, G.; Adhikari, P.; Ha, C.; Jeon, E. J.; Kim, K.W.; Kim, N.Y.; Kim, Y.D.; Ko, Y. J.; Lee, H.S.; Lee, J.; Lee, M.H; Maruyama, R.; Olsen, S. L.; Prihtiadi, H.

doi:10.1088/1748-0221/13/06/t06005

Cited by 12 publications

(9 citation statements)

References 17 publications

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“…More data are obviously needed. It is important that COSINE-100 is planning to measure the neutron's intensity and neutron's modulation [73], in which case the COSINE-100 would know if the possible modulation is due to the neutrons 7 . It is obviously the key element of the proposal (1) based on the subdominant AQN-induced component of neutrons which, however, manifests itself by annual modulation.…”

Section: B Recent Activitiesmentioning

confidence: 99%

DAMA/LIBRA annual modulation and axion quark nugget dark matter model

Zhitnitsky

2020

Phys. Rev. D

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The DAMA/LIBRA experiment shows 9.5σ evidence for an annual modulation in the (1 − 6) keV energy range, strongly suggesting that the observed modulation has the dark matter origin. However, the conventional interpretation in terms of WIMP-nucleon interaction is excluded by other experiments. We propose an alternative source of modulation in the form of neutrons, which have been liberated from surrounding material. Our computations are based on the so-called Axion Quark Nugget (AQN) dark matter model, which was originally invented long ago to explain the similarity between the dark and visible cosmological matter densities, i.e. Ω dark ∼ Ω visible . In our proposal the annual modulation is shown to be generated in keV energy range which is consistent with DL observation in (1 − 6) keV range. This keV energy scale in our proposal is mostly determined by spectral properties of the neutrinos emitted by the AQN dark matter particles, while the absence of the modulation with energies above 6 keV is explained by a sharp cutoff in the neutrino's energy spectrum at ∼ 15 MeV. This proposal can be directly tested by COSINE-100, ANAIS-112 and CYGNO experiments. It can be also tested by studying the correlations between the signals from these experiments and nearby axion search detectors.

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Section: B Recent Activitiesmentioning

confidence: 99%

DAMA/LIBRA annual modulation and axion quark nugget dark matter model

Zhitnitsky

2020

Phys. Rev. D

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“…If at least one crystal satisfies the trigger condition, data from all other crystals and the LAB-LS are recorded. The LAB-LS signals do not generate triggers, except in the case of energetic muon events that are coincident with one of the muon detector panels [37]. Energy scales for the high energy region in the NaI(Tl) crystals and LS are calibrated with the 1465 keV γ line and the 2614 keV γ line from 40 K and 208 Tl, respectively.…”

Section: H E U 4 Q R O 4 R X C U I I a 3 E E D G K D G E Z 7 H F mentioning

confidence: 99%

First Direct Search for Inelastic Boosted Dark Matter with COSINE-100

Adhikari

et al. 2019

Phys. Rev. Lett.

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A search for inelastic boosted dark matter (iBDM) using the COSINE-100 detector with 59.5 days of data is presented. This relativistic dark matter is theorized to interact with the target material through inelastic scattering with electrons, creating a heavier state that subsequently produces standard model particles, such as an electron-positron pair. In this study, we search for this electronpositron pair in coincidence with the initially scattered electron as a signature for an iBDM interaction. No excess over the predicted background event rate is observed. Therefore, we present limits on iBDM interactions under various hypotheses, one of which allows us to explore an area of the dark photon parameter space that has not yet been covered by other experiments. This is the first experimental search for iBDM using a terrestrial detector.

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“…Two 5" hamamastsu photomultiplier tubes are coupled at both ends. We achieve PSD threshold between gamma and neutron events ∼ 0.3 MeVee with dynamic range upto ∼ 10 MeVee and having similar alpha background as obtained into the R&D set-up [2]. This detector is installed at COSINE-100 experiment room [3] and neutron flux measurement is ongoing.…”

Section: Construction Of the Nmdmentioning

confidence: 92%

Construction of the fast neutron monitoring detectors for the COSINE-100 experiment

Adhikari¹

2019

Proceedings of the 39th International Conference on High Energy Physics — PoS(ICHEP2018)

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Study of fast neutron detector for COSINE-100 experiment

Cited by 12 publications

References 17 publications

DAMA/LIBRA annual modulation and axion quark nugget dark matter model

DAMA/LIBRA annual modulation and axion quark nugget dark matter model

First Direct Search for Inelastic Boosted Dark Matter with COSINE-100

Construction of the fast neutron monitoring detectors for the COSINE-100 experiment

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