中文摘要：

PandaX是一个位于四川锦屏地下实验室的大型粒子与天体物理稀有事件探测实验装置。PandaX的一期和二期实验利用二相型氙时间投影室技术来直接探测弱相互作用暗物质粒子。PandaX一期实验已经完成,它使用了120 kg氙以检验以往其他实验所发现的疑似信号,其结果在标准假设下否定了这些疑似信号。PandaX二期升级了探测器,使用了500 kg的氙,预期在2015年晚些时候正式开始数据采集以寻找暗物质,将有望拓展暗物质探测的极限。

英文摘要：

Located in the Sichuan Jingping underground laboratory, PandaX is a large scale xenon time projection chamber for the detection of rare events in particle physics and astro- physics. The dual-phase xenon chamber is used in the first and second stages to detect the weakly interacting massive particles （WIMPs） directly. The first stage PandaX-I used 120 kg of xenon to confirm the possible WIMPs signals reported in other experiments, but did not see any conclusive signal. The second stage is now undergoing shakedown tests, with the detector upgraded to con- tain 500 kg of xenon. PandaX-II will start taking data in 2015, and is expected to extend the cur- rent limits of dark matter detection.