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arXiv 2201.05740physics.ins-detastro-ph.IMhep-ex
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双相晶体/蒸气氙时间投影室的操作和性能

Operation and performance of a dual-phase crystalline/vapor xenon time projection chamber

S. Kravitz, H. Chen, R. Gibbons, S. J. Haselschwardt, Q. Xia, P. Sorensen

摘要:

我们已经建立并运行了一个晶体/蒸汽氙TPC,目标是改善对暗物质的搜索。该仪器的动机是,β从氡衰变链衰变到基态目前限制了最先进的液体/蒸气氙实验。相比之下,由于氡链衰变的时间和能量特征,晶体氙靶具有标记和拒绝氡链背景的潜力。本文是第一个演示的晶体/蒸汽氙TPC与电致发光(气体增益)的电子信号读出。它还表明,在晶体氙的闪烁产额似乎是相同的,在液体氙,在以前的结果相反。

英文摘要:

We have built and operated a crystalline/vapor xenon TPC, with the goal of improving searches for dark matter. The motivation for this instrument is the fact that beta decays from the radon decay chain to the ground state presently limit the state-of-the-art liquid/vapor xenon experiments. In contrast, a crystalline xenon target has the potential to tag and reject radon-chain backgrounds, due to the time and energy signature of their decays. The present article is the first demonstration of a crystalline/vapor xenon TPC with electroluminescence (gas gain) for the electron signal readout. It also shows that the scintillation yield in crystalline xenon appears to be identical to that in liquid xenon, in contrast to previous results.

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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