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

氢原子的实验和理论研究在现代物理学的发展中起到了关键作用。时至今日，原子氢的相对简单性和可测量光谱的精确度使其成为确定基本常数的重要工具。这使得氢的反物质对应物反氢的研究成为测试物质和反物质之间基本对称性的一个自然吸引人的系统。这是欧洲核子研究中心阿尔法实验的目标。阿尔法团队包括来自7个国家15个机构的科学家。阿尔法内部的加拿大小组，被称为阿尔法-加拿大，占这些科学家的三分之一以上，成员来自西蒙·弗雷泽大学、TRIUMF、不列颠哥伦比亚大学、卡尔加里大学和约克大学。*阿尔法在最近几年已经达到了一些高影响力的里程碑。这包括1S-2S跃迁的第一次激发和光谱[自然541,506(2017)，自然557，71(2018)]，莱曼-阿尔法跃迁的第一次激发[自然561,211(2018)]，以及反氢的超精细光谱的首次观测[自然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。我是现场磁测量方法的领导者，也是阿尔法超精细光谱学项目的领导者之一，与来自SFU的M.海登一起。阿尔法还在进行一项新的具有挑战性的实验，名为阿尔法-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大测量。阿尔法-g项目由CFI和其中三个省资助，由卡尔加里大学和阿尔法-加拿大分校领导。有了这台新设备，加拿大科学家有机会在反物质引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金，以便将我在反氢捕获和光谱分析、彭宁陷阱和磁测量方面的专业知识带到加拿大阿尔法大学。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倡议。*

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.***