Development of Low Background CsI(Tl) Crystals and Search for WIMP

Kim, H.J.; Lee, H.S.; Bhang, H.; Choi, Jun‐Ho; He, Dawei; Hahn, I. S.; Hwang, Mun Kyung; Jung, Sungwook; Kang, W. G.; Kim, D.W.; Kim, S.C.; Kim, T.Y.; Kim, Y.D.; Kwak, Jungwon; Kwon, Y.; Lee, J.; Lee, J.I.; Lee, Mi Jung; Lee, M.H.; Li, J.; Li, X.; Myung, S. S.; Ryu, Seungoh; So, J. H.; Zhu, J.

doi:10.1109/tns.2008.921930

Cited by 14 publications

(5 citation statements)

References 17 publications

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“…Cesium Iodide Cesium iodide (CsI) is among the oldest discovered and widely used inorganic scintillators [374,375]. This material, doped with Tl to enhance light output, is actively used in scintillation detectors for DM searches [594][595][596][597][598][599][600][601][602][603]. Undoped CsI is very attractive for bolometric searches for DM signals [415,604,605], particularly for the detection of the annual modulation of the DM rate [606].…”

Section: Strontium Fluoridementioning

confidence: 99%

Scintillation in Low-Temperature Particle Detectors

Poda

2021

Physics

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Inorganic crystal scintillators play a crucial role in particle detection for various applications in fundamental physics and applied science. The use of such materials as scintillating bolometers, which operate at temperatures as low as 10 mK and detect both heat (phonon) and scintillation signals, significantly extends detectors performance compared to the conventional scintillation counters. In particular, such low-temperature devices offer a high energy resolution in a wide energy interval thanks to a phonon signal detection, while a simultaneous registration of scintillation emitted provides an efficient particle identification tool. This feature is of great importance for a background identification and rejection. Combined with a large variety of elements of interest, which can be embedded in crystal scintillators, scintillating bolometers represent powerful particle detectors for rare-event searches (e.g., rare alpha and beta decays, double-beta decay, dark matter particles, neutrino detection). Here, we review the features and results of low-temperature scintillation detection achieved over a 30-year history of developments of scintillating bolometers and their use in rare-event search experiments.

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Section: Strontium Fluoridementioning

confidence: 99%

Scintillation in Low-Temperature Particle Detectors

Poda

2021

Physics

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“…[22], this degree of improvement is achievable through the application of additional shielding and well-understood techniques to reduce the dominant internal radiocontaminations of CsI [33] (see also Refs. [34][35][36]). We also include in our analysis an overall systematic uncertainty of ±28% on the overall signal rate, corresponding to uncertainties associated with the cross section, detector efficiency, and overall neutrino flux.…”

Section: Projected Sensitivity To Sterile Neutrinosmentioning

confidence: 99%

Constraining sterile neutrino interpretations of the LSND and MiniBooNE anomalies with coherent neutrino scattering experiments

Blanco

Machado

2020

Phys. Rev. D

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Results from the LSND and MiniBooNE experiments have been interpreted as evidence for a sterile neutrino with a mass near the electronvolt scale. Here we propose to test such a scenario by measuring the coherent elastic scattering rate of neutrinos from a pulsed spallation source. Coherent scattering is universal across all active neutrino flavors, and thus can provide a measurement of the total Standard Model neutrino flux. By performing measurements over different baselines and making use of timing information, it is possible to significantly reduce the systematic uncertainties and to independently measure the fluxes of neutrinos that originate as νµ or as either νe orνµ. We find that a 100 kg CsI detector would be sensitive to the large fraction of the sterile neutrino parameter space that could potentially account for the LSND and MiniBooNE anomalies.

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“…The experience pointed out that the water used for Cs extraction might be the main source for 137 Cs contamination in CsI powder [68,69] and it was tested that the purification of water decreases the 137 Cs content. For crystals recently produced by KIMS [70][71][72] contamination of 137 Cs is about 1.7 mBq/kg, while 87 Rb is reduced to less than 3 mBq/kg in CsI powders by using the recrystallisation method, see also [73] for 134 Cs and U/Th contaminations. On the other side background from 134 Cs contamination in CsI powders is very difficult to remove because it is mainly made by neutron capture process of 133 Cs, which is a stable isotope.…”

Section: Jinst 15 C07037mentioning

confidence: 99%

Low background scintillators to investigate rare processes

et al. 2020

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Many developments, researches on innovative materials and purification techniques have offered a wide set of inorganic scintillators to investigate many processes; further developments are still in progress. In particular, efforts to realize very low background detectors have opened their effective application to the search of rare processes deep underground. Several cases will be outlined offering—to some extent—a discussion of several inorganic crystal scintillators' performances and their potentiality for the future.

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Development of Low Background CsI(Tl) Crystals and Search for WIMP

Cited by 14 publications

References 17 publications

Scintillation in Low-Temperature Particle Detectors

Scintillation in Low-Temperature Particle Detectors

Constraining sterile neutrino interpretations of the LSND and MiniBooNE anomalies with coherent neutrino scattering experiments

Low background scintillators to investigate rare processes

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