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| Main Authors: | , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2401.12034 |
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| _version_ | 1866913300507262976 |
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| author | Liu, Taiyuan Xue, Mingxuan Peng, Haiping Zhao, Kangkang Duan, Deyong Wang, Yichao Feng, Changqing Wei, Yifeng Lin, Qing Xu, Zizong Wang, Xiaolian |
| author_facet | Liu, Taiyuan Xue, Mingxuan Peng, Haiping Zhao, Kangkang Duan, Deyong Wang, Yichao Feng, Changqing Wei, Yifeng Lin, Qing Xu, Zizong Wang, Xiaolian |
| contents | Environmental $γ$-rays constitute a crucial source of background in various nuclear, particle and quantum physics experiments. To evaluate the flux rate and the spectrum of $γ$ background, we have developed a novel and straightforward approach to reconstruct the environmental $γ$ flux spectrum by applying a portable CZT $γ$ detector and iterative Bayesian unfolding, which possesses excellent transferability for broader applications. In this paper, the calibration and GEANT4 Monte-Carlo modeling of the CZT detector, the unfolding procedure as well as the uncertainty estimation are demonstrated in detail. The reconstructed spectrum reveals an environmental $γ$ flux intensity of $3.3\pm 0.9\times 10^{7}$~ (m$^2\cdot$sr$\cdot$hour)$^{-1}$ ranging from 73 to 3033~keV, along with characteristic peaks primarily arising from $^{232}$Th series, $^{238}$U series and $^{40}$K. We also give an instance of background rate evaluation with the unfolded spectrum for validation of the approach. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_12034 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Unfolding environmental $γ$ flux spectrum with portable CZT detector Liu, Taiyuan Xue, Mingxuan Peng, Haiping Zhao, Kangkang Duan, Deyong Wang, Yichao Feng, Changqing Wei, Yifeng Lin, Qing Xu, Zizong Wang, Xiaolian Instrumentation and Detectors High Energy Physics - Experiment Environmental $γ$-rays constitute a crucial source of background in various nuclear, particle and quantum physics experiments. To evaluate the flux rate and the spectrum of $γ$ background, we have developed a novel and straightforward approach to reconstruct the environmental $γ$ flux spectrum by applying a portable CZT $γ$ detector and iterative Bayesian unfolding, which possesses excellent transferability for broader applications. In this paper, the calibration and GEANT4 Monte-Carlo modeling of the CZT detector, the unfolding procedure as well as the uncertainty estimation are demonstrated in detail. The reconstructed spectrum reveals an environmental $γ$ flux intensity of $3.3\pm 0.9\times 10^{7}$~ (m$^2\cdot$sr$\cdot$hour)$^{-1}$ ranging from 73 to 3033~keV, along with characteristic peaks primarily arising from $^{232}$Th series, $^{238}$U series and $^{40}$K. We also give an instance of background rate evaluation with the unfolded spectrum for validation of the approach. |
| title | Unfolding environmental $γ$ flux spectrum with portable CZT detector |
| topic | Instrumentation and Detectors High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2401.12034 |