The Production and Study of Cold Antihydrogen

冷抗氢剂的生产与研究

• 批准号: 0306308
• 负责人: Gerald Gabrielse
• 金额: $ 287.23万
• 依托单位: Harvard University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-08-01 至 2008-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0306308&HistoricalAwards=false
• 关键词: Production; Study; Cold; Antihydrogen

The overall goal of this research program is to use precise laser spectroscopy on the 1s-2s transition to probe for any tiny difference between antihydrogen atoms and hydrogen atoms, thereby providing the most sensitive tests of CPT (Charge conjugation, Parity, and Time reversal) invariance with baryons and leptons. The antihydrogen is formed in a nested Penning trap called ATRAP (Antihydrogen TRAP). ATRAP uses antiprotons from CERN's Antiproton Decelerator, and positrons from a radioactive source, to produce the cold antihydrogen. With the successful demonstration in 2002 of the formation of antihydrogen, the focus now turns to optimizing the production of antihydrogen and obtaining the first antihydrogen spectroscopy. The broad impacts of the program spans from the training of students to the impact of solenoid design on medical imaging to the education of the public on antimatter physics.

该研究计划的总体目标是使用1s-2s跃迁上的精确激光光谱来探测反氢原子和氢原子之间的任何微小差异，从而提供重子和轻子之间CPT(电荷共轭、宇称和时间反转)不变性的最灵敏测试。反氢是在称为ATRAP(反氢陷阱)的嵌套彭宁陷阱中形成的。ATRAP使用来自欧洲核子研究中心的反质子减速器的反质子和来自放射源的正电子来产生冷的反氢。随着2002年成功地演示了反氢的形成，现在的重点转向优化反氢的生产和获得第一个反氢光谱。该计划的广泛影响从学生的培训到螺线管设计对医学成像的影响，再到对公众的反物质物理学教育。