Background studies of high energy γ rays from ( n,γ ) reactions in the CANDLES experiment

Nakajima, K.; Iida, Tsutomu; Akutagawa, K.; Batpurev, T.; Chan, W. M.; Dokaku, F.; Fushimi, K.; Kakubata, H.; Kanagawa, K.; Katagiri, S.; Kawasaki, Kohei; Khai, B. T.; Kino, H.; Kinoshita, E.; Kishimoto, T.; Hazama, R.; Hiraoka, H.; Hiyama, T.; Ishikawa, Masahiro; Li, X.; Maeda, Tsuyoshi; Matsuoka, K.; Möser, Michael; Nomachi, M.; Ogawa, Izumi; Ohata, Toshihiro; Sato, H.; Shamoto, K.; Shimada, M.; Shokati, M.; Takahashi, N.; Takemoto, Y.; Takihira, Y.; Tamagawa, Y.; Tozawa, M.; Teranishi, K.; Tetsuno, K.; Trang, V. T. T.; Tsuzuki, M.; Umehara, S.; Wang, W.; Yoshida, S.; Yotsunaga, N.

doi:10.1016/j.astropartphys.2018.02.012

Cited by 12 publications

(2 citation statements)

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“…It is the largest among the candidate nuclei for double beta decay. Taking advantage of this, CANDLES aims to measure 0νββ in an ultra-low background environment [11]. The high Q-value of 48 Ca makes it difficult, however, to precisely calibrate the detector due to the absence of a high-energy standard gamma ray source.…”

Section: Introductionmentioning

confidence: 99%

The energy calibration system for CANDLES using (n,γ) reaction

Iida

Mizukoshi

Ohata

et al. 2021

Nuclear Instruments and Methods in Physics Research Section A:

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CAlcium fluoride for the study of Neutrinos and Dark matters by Low-energy Spectrometer (CANDLES) is searching for neutrino-less double-beta decay of 48 Ca using a CaF 2 scintillator array. A high Q-value of 48 Ca at 4,268 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 γ-ray source. Therefore, we have developed a novel calibration system based on γ-ray emission by neutron capture on 28 Si, 56 Fe, and 58 Ni 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.

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Section: Introductionmentioning

confidence: 99%

The energy calibration system for CANDLES using (n,γ) reaction

Iida

Mizukoshi

Ohata

et al. 2021

Nuclear Instruments and Methods in Physics Research Section A:

Self Cite

View full text Add to dashboard Cite

show abstract

“…It is the largest among the candidate nuclei for double beta decay. Taking advantage of this, CANDLES aims to measure 0νββ in an ultra-low background environment [7]. The high Q-value of 48 Ca makes it difficult, however, to precisely calibrate the detector due to the absence of a high-energy standard gamma ray source.…”

Section: Introductionmentioning

confidence: 99%

The energy calibration system for CANDLES using (n, γ) reaction

Iida,

Mizukoshi,

Ohata

et al. 2020

Preprint

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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 γ-ray source. Therefore, we have developed a novel calibration system based on γ-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.

show abstract