1. Purification of CaF2 crystal for double beta decay experiments.
- Author
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Fushimi, K., Imagawa, K., Kishida, Y., Kurosawa, S., Orito, R., Sakaue, A., Takihira, Y., Umehara, S., Yamaji, A., Yamamoto, Y., Yasuda, K., and Yoshida, T.
- Subjects
DOUBLE beta decay ,CRYSTAL growth ,CRYSTALS - Abstract
We report on inorganic crystal purification for the search for the neutrinoless double-beta decay of
48 Ca using CaF2 crystals. We are working on the purification of CaF2 crystal, which is made from water-insoluble raw materials. The goal of the purity in this crystal is ≤1 µBq/kg. We measured the impurities in the crucible and CaF2 powder before we made a molten product of the CaF2 . We will consider the correlation between the purity contained in the materials around the crystal growth and the purity of the molten product. The material-selection policy and prospects for the large-volume detector system will be discussed. [ABSTRACT FROM AUTHOR]- Published
- 2023
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