Growth and development of pure Li2MoO4crystals for rare event experiment at CUP

J. K. Son; J. S. Choe; O. Gileva; I. S. Hahn; W. G. Kang; D. Y. Kim; G. W. Kim; H. J. Kim; Y. D. Kim; C. H. Lee; E. K. Lee; M. H. Lee; D. S. Leonard; H. K. Park; S. Y. Park; S. J. Ra; K. A. Shin

doi:10.1088/1748-0221/15/07/C07035

Growth and development of pure Li₂MoO₄crystals for rare event experiment at CUP

J. K. Son, J. S. Choe, O. Gileva, I. S. Hahn, W. G. Kang, D. Y. Kim, G. W. Kim, H. J. Kim, Y. D. Kim, C. H. Lee, E. K. Lee, M. H. Lee, D. S. Leonard, H. K. Park, S. Y. Park, S. J. Ra, K. A. Shin

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Abstract

The Center for Underground Physics (CUP) of the Institute for Basic Science (IBS) is searching for the neutrinoless double-beta decay (0νββ) of 100Mo in the molybdate crystals of the AMoRE experiment. The experiment requires pure scintillation crystals to minimize internal backgrounds that can affect the 0νββ signal. For the last few years, we have been growing and studying Li2MoO4 crystals in a clean-environment facility to minimize external contamination during the crystal growth. Before growing Li2100MoO4 crystal, we have studied Li2natMoO4 crystal growth by a conventional Czochralski (CZ) grower. We grew a few different kinds of Li2natMO4 crystals using different raw materials in a campaign to minimize impurities. We prepared the fused Al2O3 refractories for the growth of ingots. Purities of the grown crystals were measured with high purity germanium detectors and by inductively coupled plasma mass spectrometry. The results show that the Li2MoO4 crystal has purity levels suitable for rare-event experiments. In this study, we present the growth of Li2MoO4 crystals at CUP and their purities.

Original language	English
Article number	C07035
Journal	Journal of Instrumentation
Volume	15
Issue number	7
DOIs	https://doi.org/10.1088/1748-0221/15/07/C07035
State	Published - Jul 2020

Keywords

CZT
Calorimeters
Cryogenic detectors
Double-beta decay detectors
Gamma detectors (scintillators
HPGe
HgI etc)

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10.1088/1748-0221/15/07/C07035

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Son, J. K., Choe, J. S., Gileva, O., Hahn, I. S., Kang, W. G., Kim, D. Y., Kim, G. W., Kim, H. J., Kim, Y. D., Lee, C. H., Lee, E. K., Lee, M. H., Leonard, D. S., Park, H. K., Park, S. Y., Ra, S. J., & Shin, K. A. (2020). Growth and development of pure Li₂MoO₄crystals for rare event experiment at CUP. Journal of Instrumentation, 15(7), Article C07035. https://doi.org/10.1088/1748-0221/15/07/C07035

@article{f91c3ed7aa2544d9a25bf41d3581881a,

title = "Growth and development of pure Li2MoO4crystals for rare event experiment at CUP",

abstract = "The Center for Underground Physics (CUP) of the Institute for Basic Science (IBS) is searching for the neutrinoless double-beta decay (0νββ) of 100Mo in the molybdate crystals of the AMoRE experiment. The experiment requires pure scintillation crystals to minimize internal backgrounds that can affect the 0νββ signal. For the last few years, we have been growing and studying Li2MoO4 crystals in a clean-environment facility to minimize external contamination during the crystal growth. Before growing Li2100MoO4 crystal, we have studied Li2natMoO4 crystal growth by a conventional Czochralski (CZ) grower. We grew a few different kinds of Li2natMO4 crystals using different raw materials in a campaign to minimize impurities. We prepared the fused Al2O3 refractories for the growth of ingots. Purities of the grown crystals were measured with high purity germanium detectors and by inductively coupled plasma mass spectrometry. The results show that the Li2MoO4 crystal has purity levels suitable for rare-event experiments. In this study, we present the growth of Li2MoO4 crystals at CUP and their purities.",

keywords = "CZT, Calorimeters, Cryogenic detectors, Double-beta decay detectors, Gamma detectors (scintillators, HPGe, HgI etc)",

author = "Son, {J. K.} and Choe, {J. S.} and O. Gileva and Hahn, {I. S.} and Kang, {W. G.} and Kim, {D. Y.} and Kim, {G. W.} and Kim, {H. J.} and Kim, {Y. D.} and Lee, {C. H.} and Lee, {E. K.} and Lee, {M. H.} and Leonard, {D. S.} and Park, {H. K.} and Park, {S. Y.} and Ra, {S. J.} and Shin, {K. A.}",

note = "Publisher Copyright: {\textcopyright} 2020 IOP Publishing Ltd and Sissa Medialab.",

year = "2020",

month = jul,

doi = "10.1088/1748-0221/15/07/C07035",

language = "English",

volume = "15",

journal = "Journal of Instrumentation",

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AU - Son, J. K.

AU - Choe, J. S.

AU - Gileva, O.

AU - Hahn, I. S.

AU - Kang, W. G.

AU - Kim, D. Y.

AU - Kim, G. W.

AU - Kim, H. J.

AU - Kim, Y. D.

AU - Lee, C. H.

AU - Lee, E. K.

AU - Lee, M. H.

AU - Leonard, D. S.

AU - Park, H. K.

AU - Park, S. Y.

AU - Ra, S. J.

AU - Shin, K. A.

PY - 2020/7

Y1 - 2020/7

N2 - The Center for Underground Physics (CUP) of the Institute for Basic Science (IBS) is searching for the neutrinoless double-beta decay (0νββ) of 100Mo in the molybdate crystals of the AMoRE experiment. The experiment requires pure scintillation crystals to minimize internal backgrounds that can affect the 0νββ signal. For the last few years, we have been growing and studying Li2MoO4 crystals in a clean-environment facility to minimize external contamination during the crystal growth. Before growing Li2100MoO4 crystal, we have studied Li2natMoO4 crystal growth by a conventional Czochralski (CZ) grower. We grew a few different kinds of Li2natMO4 crystals using different raw materials in a campaign to minimize impurities. We prepared the fused Al2O3 refractories for the growth of ingots. Purities of the grown crystals were measured with high purity germanium detectors and by inductively coupled plasma mass spectrometry. The results show that the Li2MoO4 crystal has purity levels suitable for rare-event experiments. In this study, we present the growth of Li2MoO4 crystals at CUP and their purities.

AB - The Center for Underground Physics (CUP) of the Institute for Basic Science (IBS) is searching for the neutrinoless double-beta decay (0νββ) of 100Mo in the molybdate crystals of the AMoRE experiment. The experiment requires pure scintillation crystals to minimize internal backgrounds that can affect the 0νββ signal. For the last few years, we have been growing and studying Li2MoO4 crystals in a clean-environment facility to minimize external contamination during the crystal growth. Before growing Li2100MoO4 crystal, we have studied Li2natMoO4 crystal growth by a conventional Czochralski (CZ) grower. We grew a few different kinds of Li2natMO4 crystals using different raw materials in a campaign to minimize impurities. We prepared the fused Al2O3 refractories for the growth of ingots. Purities of the grown crystals were measured with high purity germanium detectors and by inductively coupled plasma mass spectrometry. The results show that the Li2MoO4 crystal has purity levels suitable for rare-event experiments. In this study, we present the growth of Li2MoO4 crystals at CUP and their purities.

KW - CZT

KW - Calorimeters

KW - Cryogenic detectors

KW - Double-beta decay detectors

KW - Gamma detectors (scintillators

KW - HPGe

KW - HgI etc)

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DO - 10.1088/1748-0221/15/07/C07035

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SN - 1748-0221

VL - 15

JO - Journal of Instrumentation

JF - Journal of Instrumentation

IS - 7

M1 - C07035

ER -

Growth and development of pure Li₂MoO₄crystals for rare event experiment at CUP

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Keywords

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