Test of Topmetal-II− in liquid nitrogen for cryogenic temperature TPCs
Test of Topmetal-II− in liquid nitrogen for cryogenic temperature TPCs
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DOI：
10.1016/j.nima.2016.05.125
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发表时间：
2016-01
影响因子：
1.4
通讯作者：
S. Zou;Yan Fan;M. An;Chufeng Chen;Guangming Huang;Xiaoting Li;Jun Liu;H. Pei;Xiangming Sun;P. Yang;Dong Wang;L. Xiao;Zhen Wang;Kai Wang;W. Zhou
中科院分区：
文献类型：
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作者：
S. Zou;Yan Fan;M. An;Chufeng Chen;Guangming Huang;Xiaoting Li;Jun Liu;H. Pei;Xiangming Sun;P. Yang;Dong Wang;L. Xiao;Zhen Wang;Kai Wang;W. Zhou
Texttit是一种高度像素化的直接电荷传感器，它包含一个间距为83M的7272像素阵列。它的主要特点是可以通过每个像素的金属节点直接收集电荷，形成电荷云分布的二维图像。在室温下，没有放大的情况下，可以测量带电粒子。为了测量液氮杜瓦在低温下的性能，在液氮杜瓦中嵌入了一个TOPMENTAL-传感器。实验结果表明，该材料在低温下也能很好地工作，其噪声(ENC)比室温下(13e)低12倍。从噪声的角度来看，在寻找无中微子双β衰变和暗物质的实验中使用的液体Ar和Xe时间投影室(TPC)的下一代读数中，TETHITT是一个很有前途的候选者。
\textit{Topmetal-} is a highly pixelated direct charge sensor that contains a 7272 pixel array of 83m pitch size. The key feature of \textit{Topmetal-} is that it can directly collect charges via metal nodes of each pixel to form two-dimensional images of charge cloud distributions. \textit{Topmetal-} was proved to measure charged particles without amplification at room temperature. To measure its performance at cryogenic temperature, a \textit{Topmetal-} sensor is embedded into a liquid nitrogen dewar. The results presented in this paper show that \textit{Topmetal-} can also operate well at this low temperature with a noise (ENC) of 12 elower than that at room temperature (13 e). From the noise perspective, \textit{Topmetal-} is a promising candidate for the next generation readout of liquid argon and xenon Time Projection Chamber (TPC) used in experiments searching for neutrinoless double beta decay and dark matter.