标题： Canfranc地下实验室的IGEX暗物质探测状态 显示英文标题

标题： Status of IGEX dark matter search at Canfranc Underground Laboratory

摘要： 一个IGEX 76Ge双贝塔衰变探测器目前正在卡昂弗朗实验室运行，用于寻找暗物质WIMP，通过WIMP弹性散射产生的Ge核反冲实现。在这次演讲中，我们报告了理解并最终排除低能背景的持续努力。这些努力导致了中子屏蔽的改进以及部分背景的减少，但仍然有一些剩余事件未被完全识别。氚污染或μ子诱导的中子被认为是可能的来源，模拟和实验测试仍在进行中。根据本研究的成功与否，我们将讨论该实验及其未来扩展（GEDEON暗物质实验）的前景。 显示英文摘要

摘要： One IGEX 76Ge double-beta decay detector is currently operating in the Canfranc Underground Laboratory in a search for dark matter WIMPs, through the Ge nuclear recoil produced by the WIMP elastic scattering. In this talk we report on the on-going efforts to understand and eventually reject the background at low energy. These efforts have led to the improvement of the neutron shielding and to partial reduction of the background, but still the remaining events are not totally identified. A tritium contamination or muon-induced neutrons are considered as possible sources, simulations and experimental test being still under progress. According to the success of this study we comment the prospects of the experiment as well as those of its future extension, the GEDEON dark matter experiment.