Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment ( IF 1.5 ) Pub Date : 2020-10-08 , DOI: 10.1016/j.nima.2020.164727 T. Iida , K. Mizukoshi , T. Ohata , T. Uehara , T. Batpurev , K. Fushimi , R. Hazama , M. Ishikawa , H. Kakubata , K. Kanagawa , S. Katagiri , B.T. Khai , T. Kishimoto , X. Li , T. Maeda , K. Matsuoka , K. Morishita , M. Moser , K. Nakajima , M. Nomachi , I. Ogawa , M. Shokati , K. Suzuki , Y. Takemoto , Y. Takihira , Y. Tamagawa , K. Tetsuno , M. Tozawa , V.T.T. Trang , S. Umehara , S. Yoshida
Calcium fluoride for the study of Neutrinos and Dark matters by Low-energy Spectrometer (CANDLES) searches for neutrino-less double-beta decay of 48Ca using a Ca scintillator array. A high Q-value of 48Ca at 4268 keV enabled us to achieve low background, however, at the same time it causes difficulties in calibrating the detector’s Q-value region because of the absence of a standard high-energy -ray source. Therefore, we have developed a novel calibration system based on -ray emission by neutron capture on 28Si, 56Fe, and 58Ni nuclei. In this paper, we report the development of the new calibration system as well as the results of energy calibration in CANDLES up to 9 MeV.
中文翻译:
蜡烛的能量校准系统使用(n,)反应
低能谱仪(CANDLES)用于研究中微子和暗物质的氟化钙使用Ca来寻找48 Ca的无中微子双β衰变闪烁体阵列。在4268 keV时48 Ca的高Q值使我们能够获得较低的背景,但是,由于缺乏标准的高能,它同时在校准检测器的Q值区域时造成了困难-射线源。因此,我们开发了一种基于中子俘获28 Si,56 Fe和58 Ni原子核产生的X射线辐射。在本文中,我们报告了新校准系统的开发以及在高达9 MeV的CANDLES中进行能量校准的结果。