R&D of LXe Detector Technology for Dark Matter Experiments

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• 批准号: 1047794
• 负责人: Elena Aprile
• 金额: $ 29.23万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-09-15 至 2013-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1047794&HistoricalAwards=false
• 关键词: R& LXe; Detector; Technology; Dark

This award will provide funds for research and development to advance the search for the direct detection of dark matter Weakly Interactive Massive Particles (WIMPs) with liquid xenon (LXe) as target and detector medium in next generation, large volume, two-phase time-projection chambers (TPC). These types of detectors have been most successfully exploited by the XENON collaboration, with the XENON10 prototype and the XENON100 detector. The latter is currently the most sensitive dark matter experiment in operation underground with a target at the 100 kg mass scale. The group will develop and test a two-phase Xe TPC prototype to validate the design of the next generation XENON1T experiment. A key requirement for the realization of multi-ton LXe detectors is the demonstration of electron drift over a meter length, under a field of at least 1 kV/cm. At the same time, one has to demonstrate the liquid xenon purity required to allow ionization electrons to drift across such large detectors. The Collaboration has designed a detector system which will be able to address these and other questions relevant to XENON1T. The goal is to get results within one year, and most of the equipment items could also be used in the actual XENON1T development.The broader impact of this award comes about since the XENON science addresses questions about fundamental properties of the Universe, with all the ingredients to captivate the interest and imagination of students and the general public alike. The research and development work will advance the application of LXe detectors and related technologies in fields beyond particle astrophysics, including national security and medical imaging research.

该奖项将为研究和开发提供资金，以促进与液体氙（LXE）（LXE）作为靶标和检测器培养基的直接检测，以直接检测暗物质弱互动式巨型颗粒（WIMP），这是下一代，大容量，两阶段时间预测室（TPC）。这些类型的探测器最成功地利用了Xenon10原型和Xenon100检测器。后者目前是地下运行中最敏感的暗物质实验，目标​​是100 kg质量尺度。该组将开发和测试两相XE TPC原型，以验证下一代Xenon1t实验的设计。实现多吨LXE检测器的关键要求是在至少1 kV/cm的场下，电子在米长上漂移的演示。同时，必须证明允许电离电子在如此大的检测器上漂移所需的液体氙气纯度。该协作设计了一个检测系统，该系统将能够解决与Xenon1t相关的这些问题和其他问题。目的是在一年内获得结果，并且大多数设备项目也可以在实际的Xenon1T开发中使用。该奖项的更广泛影响是因为Xenon Science解决了有关宇宙基本属性的问题，所有要素都可以吸引学生的兴趣和想象力。研究与开发工作将推动LXE检测器和相关技术在粒子天体物理学以外的领域（包括国家安全和医学成像研究）中的应用。