Testing fundamental symmetries with the ALPHA antihydrogen experiment - bridging grant for new member

用 ALPHA 反氢实验测试基本对称性 - 新成员的过渡资助

• 批准号: SAPPJ-2019-00059
• 负责人: Friesen, Timothy
• 金额: $ 4.74万
• 依托单位: University of Calgary
• 依托单位国家: 加拿大
• 项目类别: Subatomic Physics Envelope - Project
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=691357
• 关键词: Testing; fundamental; symmetries; ALPHA; antihydrogen

Experimental and theoretical studies of the hydrogen atom have played a key role in the development of modern physics. To this day, atomic hydrogen's relative simplicity and precision to which its spectrum can be measured makes it an important tool for determining fundamental constants. This makes study of hydrogen's antimatter counterpart, antihydrogen, a naturally attractive system to test fundamental symmetries between matter and antimatter. This is the goal of the ALPHA experiment at CERN. The ALPHA collaboration includes scientists from 15 institutions across 7 countries. The Canadian group within ALPHA, known as ALPHA-Canada, makes up over one-third of those scientists and has members from Simon Fraser University, TRIUMF, University of British Columbia, University of Calgary, and York University. ******ALPHA has reached a number of high-impact milestones in recent years. This includes the first excitation and spectroscopy of the 1S 2S transition [Nature 541, 506 (2017), Nature 557, 71 (2018)], the first excitation of the Lyman-alpha transition [Nature 561, 211 (2018)], and the first observation of the hyperfine spectrum of antihydrogen [Nature 548, 66 (2017)]. As a long-time member of the ALPHA collaboration and the current ALPHA Technical Coordinator, I have made significant contributions to all of these measurements. I am the leader of in situ magnetometry methods and one of the leaders, with M. Hayden from SFU, of ALPHA's hyperfine spectroscopy program.*******ALPHA is also undertaking a new challenging experiment, known as ALPHA-g, to measure the gravitational mass of antihydrogen. This would be the first significant measurement of the gravitational force on antimatter. The ALPHA-g project is being funded by the CFI and three of the provinces and is led by The University of Calgary and ALPHA-Canada. With this new apparatus Canadian scientists have the opportunity to lead groundbreaking new experiments on antimatter gravity and spectroscopy. ******As a new faculty member at The University of Calgary, I am requesting one year of bridge-funding to bring my expertise in antihydrogen trapping and spectroscopy, Penning traps, and magnetometry to ALPHA-Canada. With this funding I will be able to make significant contributions and bring new initiatives to ALPHA's antihydrogen research program.***

氢原子的实验和理论研究在现代物理学的发展中起了关键作用。直到今天，原子氢的相对简单和精确的光谱测量使它成为确定基本常数的重要工具。这使得对氢的反物质对应物——反氢的研究成为一个天然的有吸引力的系统，用来测试物质和反物质之间的基本对称性。这就是欧洲核子研究中心ALPHA实验的目标。ALPHA合作项目包括来自7个国家15个机构的科学家。ALPHA中的加拿大小组，被称为ALPHA- canada，占这些科学家的三分之一以上，成员来自西蒙弗雷泽大学、凯旋大学、不列颠哥伦比亚大学、卡尔加里大学和约克大学。******ALPHA近年来取得了许多具有重大影响的里程碑。这包括1S - 2S跃迁的首次激发和光谱[Nature 541, 506 (2017), Nature 557, 71 (2018)]， Lyman-alpha跃迁的首次激发[Nature 561, 211(2018)]，以及反氢的超精细光谱的首次观测[Nature 548, 66(2017)]。作为ALPHA协作的长期成员和现任ALPHA技术协调员，我对所有这些测量都做出了重大贡献。我是原位磁强计方法的领导者，与来自SFU的M. Hayden一起，是ALPHA超精细光谱项目的领导者之一。*******ALPHA也在进行一项新的具有挑战性的实验，称为ALPHA-g，以测量反氢的引力质量。这将是对反物质引力的第一次重要测量。ALPHA-g项目由CFI和三个省资助，由卡尔加里大学和ALPHA-Canada领导。有了这个新设备，加拿大科学家有机会在反物质重力和光谱学方面进行开创性的新实验。******作为卡尔加里大学的一名新教员，我申请一年的过渡性资助，以将我在反氢捕获和光谱学，潘宁陷阱和磁力计方面的专业知识带到ALPHA-Canada。有了这笔资金，我将能够做出重大贡献，并为阿尔法的反氢研究计划带来新的举措