The energy calibration system for CANDLES using (n, \gamma) reaction
| Autor: | Iida, T., Mizukoshi, K., Ohata, T., Uehara, T., Batpurev, T., Chan, W. M., Fushimi, K., Hazama, R., Ishikawa, M., Kakubata, H., Kanagawa, K., Katagiri, S., Khai, B. T., Kishimoto, T., Li, X., Maeda, T., Matsuoka, K., Morishita, K., Moser, M., Nakajima, K., Nomachi, M., Ogawa, I., Shokati, M., Suzuki, K., Takemoto, Y., Takihira, Y., Tamagawa, Y., Tetsuno, K., Trang, V. T. T., Umehara, S., Yoshida, S. |
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| Rok vydání: | 2020 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1016/j.nima.2020.164727 |
| Popis: | CAlcium fluoride for the study of Neutrinos and Dark matters by Low-energy Spectrometer (CANDLES) searches for neutrino-less double beta decay of $^{48}$Ca using a CaF$_2$ scintillator array. A high Q-value of $^{48}$Ca at 4,272 keV enabled us to achieve very low background condition, however, at the same it causes difficulties in calibrating the detector's Q-value region because of the absence of a standard high-energy $\gamma$-ray source. Therefore, we have developed a novel calibration system based on $\gamma$-ray emission by neutron capture on $^{28}$Si, $^{56}$Fe and $^{58}$Ni nuclei. In the paper, we report the development of the new calibration system as well as the results of energy calibration in CANDLES up to 9 MeV. Comment: 6 pages, 7 figures |
| Databáze: | arXiv |
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