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arXiv 1710.03401physics.ins-dethep-ex
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JUNO样机用$^{222}$ Rn探测器的研制

The development of $^{222}$Rn detectors for JUNO prototype

Y. P. Zhang, J. C. Liu, C. Guo, Y. B. Huang, Z. Y. Yu, C. Xu, M. Y. Guan, C. G. Yang, P. Zhang

摘要:

可溶于水的放射性惰性气体$^{222}$ Rn是JUNO的重要背景源。本文以JUNO原型水系统为基础,提出并研制了两种高灵敏度测氡仪。用硅PIN光电二极管探测$^{214}$ Po衰变产生的$α$的硅PIN Rn探测器的灵敏度为$\sim$ 9.0 mBq/m $^3$。用液体闪烁体探测$^{214}$ Bi衰变的$β$和$^{214}$ Po衰变的$α$的LS Rn探测器的灵敏度为$\sim$ 64.0 mBq/m $^3$。这两种探测器都有潜力开发成为JUNO否决探测器的氡浓度在线监测设备。

英文摘要:

The radioactive noble gas $^{222}$Rn, which can be dissolved in water, is an important background source for JUNO. In this paper, based on the water system of JUNO prototype, two kinds of high sensitivity radon detectors have been proposed and developed. The sensitivity of Si-PIN Rn detector, which uses a Si-PIN photodiode to detect the $α$ from $^{214}$Po decay, is $\sim$9.0~mBq/m$^3$. The sensitivity of LS Rn detector, which uses liquid scintillator to detect the coincident signals of $β$ from $^{214}$Bi decay and $α$ from $^{214}$Po decay, is $\sim$64.0~mBq/m$^3$. Both of the two kinds of Rn detector have the potential to be developed as an online Rn concentration monitoring equipment for JUNO veto detector.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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