论文标题
开发低$α$ - 发射$μ$ $ - 作为方向敏感的暗物质检测器的读数设备
Development of a low-$α$-emitting $μ$-PIC as a readout device for direction-sensitive dark matter detectors
论文作者
论文摘要
方向灵敏度可以为直接检测构成暗物质的弱相互作用的巨大颗粒提供可靠的证据。但是，由于放射性背景，该方法的敏感性保持较低。这项研究的目的是开发低背景检测器作为气态时间投影室的二维成像装置。在方向敏感的暗物质实验中〜（例如，新奇），从检测器组件中发出的$α$ - 通常会产生实质性的放射性背景。根据对新奇背景的研究，开发了新的检测器“低$ $ $ $ $ $ $ $ $ -PIC”。该产生的$ $ $ PIC作为气体检测器的性能良好，$α$ ray的排放率从$ $ $ $ $ $ $ $的降低100倍。
Direction sensitivity could provide robust evidence for the direct detection of weakly interacting massive particles constituting dark matter. However, the sensitivity of this method remains low due to the radioactive backgrounds. The purpose of this study is to develop a low-background detector as a two-dimensional imaging device for a gaseous time projection chamber. In direction-sensitive dark matter experiments~(e.g. NEWAGE), $α$-rays emitted from the detector components often create substantial radioactive backgrounds. Based on the study of the background of NEWAGE, a new detector "low-$α$ $μ$-PIC" is developed. The produced $μ$-PIC performs well as a gas detector and the $α$-ray emission rate from the $μ$-PIC reduced by a factor of 100.
