The Production and Study of Cold Antihydrogen

该项目致力于反氢冷原子的产生和1S-2S跃迁频率的最终高精度光谱测量。这些实验利用了一个嵌套的彭宁陷阱，其中可以允许冷正电子和反质子结合，然后产生的氢原子被困在相同的磁结构中，在那里可以对它们进行光谱分析。这些实验将在欧洲核子研究中心的反质子减速器(AD)设施中进行，这是一项国际合作的一部分，该合作将包括来自美国哈佛大学和NIST的研究小组，来自德国马克斯·普朗克皮毛量子物理研究所、波恩大学和荷兰阿姆斯特丹大学的研究小组。AD建设的资金是通过日本捐款和欧洲核子研究中心提供的。预计与实验有关的技术困难将促使开发新的工具和技术，这些工具和技术可在物理和化学的若干领域得到利用，数学和物理科学局的多学科活动办公室(OMA)提供部分支助。

This project focuses on the production of cold atoms of antihydrogen and the ultimate high-precision spectroscopy measurement of the 1S-2S transition frequency. The experiments utilize a nested Penning trap in which cold positrons and antiprotons can be allowed to combine, and the resulting atoms of hydrogen then trapped within the same magnetic structure, where they can be spectroscopically analyzed. The experiments will be performed at the Antiproton Decelerator (AD) facility at CERN as part of an international collaboration that will involve research groups from Harvard University and NIST in the United States, from the Max Planck Institut fur Quantenoptik, the Institut fur Kernphysik, and the University of Bonn in Germany, and from the University of Amsterdam in Holland. Funding for the AD construction is provided through a Japanese contribution and through CERN. It is expected that the technical difficulties associated with the experiment will prompt the development of new tools and techniques that can find utilization in a number of areas in physics and chemistry, and partial support is provided by the Office of Multidisciplinary Activities (OMA) in the Directorate for Mathematical and Physical Sciences.