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arXiv · 1909.02207

Calibration of liquid argon detector with $^{83m}Kr$ and $^{22}Na$ in different drift field

Weixing Xiong·Mengyun Guan·Changgen Yang·Peng Zhang·Jinchang Liu·Cong Guo·Yuting wei·Youyu Gan·Qin Zhao·Jiajun Li
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Abstract

$^{83m}Kr$ and $^{22}Na$ have been used in calibrating a liquid argon (LAr) detector.$^{83m}Kr$ atoms are produced through the decay of $^{83}Rb$ and introduced into the LAr detector through the circulating purification system. The light yield reaches 7.26$\pm$0.02 photonelectrons/keV for 41.5keV from $^{83m}Kr$ and 7.66$\pm$0.01 photonelectrons/keV for the 511keV from $^{22}Na$, as a comparison. The light yield varies with the drift electric field from 50 to 200V/cm have been also reported. After stopping fill, the decay rate of $^{83m}Kr$ with a fitted half-life of 1.83$\pm$0.11 h, which is consistent with the reported value of 1.83$\pm$0.02 h.

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Weixing Xiong, Mengyun Guan, Changgen Yang, Peng Zhang, Jinchang Liu, Cong Guo, Yuting wei, Youyu Gan, Qin Zhao, Jiajun Li. 2019-09-05. Calibration of liquid argon detector with $^{83m}Kr$ and $^{22}Na$ in different drift field. https://arxiv.org/abs/1909.02207

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