Development of MMC-based lithium molybdate cryogenic calorimeters for AMoRE-II

  • Agrawal, A.
  • Alenkov, V. V.
  • Aryal, P.
  • Bae, H.
  • Beyer, J.
  • ... Cheoun, M. K.
  • 외 103명
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초록

The AMoRE collaboration searches for neutrinoless double beta decay of Mo-100 using molybdate scintillating crystals via low temperature thermal calorimetric detection. The early phases of the experiment, AMoREpilot and AMoRE-I, have demonstrated competitive discovery potential. Presently, the AMoRE-II experiment, featuring a large detector array with about 90 kg of Mo-100 isotope, is under construction. This paper discusses the baseline design and characterization of the lithium molybdate cryogenic calorimeters to be used in the AMoRE-II detector modules. The results from prototype setups that incorporate new housing structures and two different crystal masses (316 g and 517-521 g), operated at 10 mK temperature, show energy resolutions (FWHM) of 7.55-8.82 keV at the 2.615 MeV Tl-208 gamma line and effective light detection of 0.79-0.96 keV/MeV. The simultaneous heat and light detection enables clear separation of alpha particles with a discrimination power of 12.37-19.50 at the energy region around Li-6(n, alpha)H-3 with Q-value = 4.785 MeV. Promising detector performances were demonstrated at temperatures as high as 30 mK, which relaxes the temperature constraints for operating the large AMoRE-II array.

키워드

DOUBLE-BETA DECAYMAGNETIC CALORIMETERPURIFICATIONCRYSTALS
제목
Development of MMC-based lithium molybdate cryogenic calorimeters for AMoRE-II
저자
Agrawal, A.Alenkov, V. V.Aryal, P.Bae, H.Beyer, J.Bhandari, B.Boiko, R. S.Boonin, K.Buzanov, O.Byeon, C. R.Chanthima, N.Cheoun, M. K.Choe, J. S.Choi, S.Choudhury, S.Chung, J. S.Danevich, F. A.Djamal, M.Drung, D.Enss, C.Fleischmann, A.Gangapshev, A. M.Gastaldo, L.Gavrilyuk, Y. M.Gezhaev, A. M.Gileva, O.Grigorieva, V. D.Gurentsov, V. I.Ha, C.Ha, D. H.Ha, E. J.Hwnag, D. H.Jeon, E. J.Jeon, J. A.Jo, H. S.Kaewkhao, J.Kang, C. S.Kang, W. G.Kazalov, V. V.Kempf, S.Khan, A.Khan, S.Kim, D. Y.Kim, G. W.Kim, H. B.Kim, H. J.Kim, H. J.Kim, H. L.Kim, H. S.Kim, M. B.Kim, S. C.Kim, S. K.Kim, S. R.Kim, W. T.Kim, Y. D.Kim, Y. H.Kirdsiri, K.Ko, Y. J.Kobychev, V. V.Kornoukhov, V.Kuzminov, V. V.Kwon, D. H.Lee, C. H.Lee, D. Y.Lee, E. K.Lee, H. J.Lee, H. S.Lee, J.Lee, J. Y.Lee, K. B.Lee, M. H.Lee, M. K.Lee, S. W.Lee, Y. C.Leonard, D. S.Lim, H. S.Mailyan, B.Makarov, E. P.Nyanda, P.Oh, Y.Olsen, S. L.Panasenko, S. I.Park, H. K.Park, H. S.Park, K. S.Park, S. Y.Polischuk, O. G.Prihtiadi, H.Ra, S.Ratkevich, S. S.Rooh, G.Sari, M. B.Seo, J.Seo, K. M.Sharma, B.Shin, K. A.Shlegel, V. N.Siyeon, K.So, J.Sokur, N. V.Son, J. K.Song, J. W.Srisittipokakun, N.Tretyak, V. I.Wirawan, R.Woo, K. R.Yeon, H. J.Yoon, Y. S.Yue, Q.
DOI
10.1140/epjc/s10052-024-13498-8
발행일
2025-02
유형
Article
저널명
European Physical Journal C
85
2