Bibliographic Details
| Title: |
Unfolding environmental $\gamma$ flux spectrum with portable CZT detector |
| Authors: |
Liu, Taiyuan, Xue, Mingxuan, Peng, Haiping, Zhao, Kangkang, Duan, Deyong, Wang, Yichao, Feng, Changqing, Wei, Yifeng, Lin, Qing, Xu, Zizong, Wang, Xiaolian |
| Source: |
Nuclear Inst. and Methods in Physics Research, A (2024) |
| Publication Year: |
2024 |
| Collection: |
High Energy Physics - Experiment
Physics (Other) |
| Subject Terms: |
Physics - Instrumentation and Detectors, High Energy Physics - Experiment |
| More Details: |
Environmental $\gamma$-rays constitute a crucial source of background in various nuclear, particle and quantum physics experiments. To evaluate the flux rate and the spectrum of $\gamma$ background, we have developed a novel and straightforward approach to reconstruct the environmental $\gamma$ flux spectrum by applying a portable CZT $\gamma$ 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 $\gamma$ 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. |
| Document Type: |
Working Paper |
| DOI: |
10.1016/j.nima.2024.169315 |
| Access URL: |
http://arxiv.org/abs/2401.12034 |
| Accession Number: |
edsarx.2401.12034 |
| Database: |
arXiv |
