Fundamental Symmetry Tests with Trapped Antihydrogen: ALPHA Project at CERN/AD

捕获反氢的基本对称性测试：CERN/AD 的 ALPHA 项目

• 批准号: SAPPJ-2014-00026
• 负责人: Fujiwara, Makoto
• 金额: $ 36.43万
• 依托单位: TRIUMF
• 依托单位国家: 加拿大
• 项目类别: Subatomic Physics Envelope - Project
• 财政年份: 2016
• 资助国家: 加拿大
• 起止时间: 2016-01-01 至 2017-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=612397
• 关键词: Fundamental; Symmetry; Tests; Trapped; Antihydrogen

ALPHA is an experiment based at CERN. The ALPHA collaboration involves scientists from 15 institutions in 8 countries. Over one-third of these scientists come from Canadian research laboratories and universities. The Canadian team has held major project funding from NSERC since its inception in 2005, and has made significant contributions to numerous ALPHA achievements. The goal of the ALPHA project is to measure and compare certain properties of 'antihydrogen' - the simplest atomic form of neutral antimatter - with those of ordinary hydrogen. In doing so, the collaboration will directly test and challenge fundamental theories about similarities and differences ('symmetries') between matter and antimatter, an issue that is arguably one of the greatest unsolved problems in physics. In recent years, ALPHA has achieved many significant and high profile milestones in its pursuit of its primary goal, including: novel application of cryogenic cooling techniques (2010), stable (2010) and long term (2011) trapping of neutral antimatter, and proof of principle microwave studies of trapped antihydrogen (2012). ALPHA is currently undergoing a major upgrade, to which the Canadian group has made significant contributions with support from NSERC. The new apparatus (ALPHA-2) will allow optical access to trapped antihydrogen for precision laser spectroscopy, as well as improved microwave spectroscopy. ALPHA-Canada's contributions to ALPHA-2 include: design and fabrication of the new anti-atom trap cryostat, upgrades to the detector readout system and data acquisition, new (and improved) trap electronics, as well as laser and microwave systems. In this proposal, we request funding to support an exciting and highly-visible three year program of research. It will result in the first-ever laser cooling of atomic antihydrogen, an improved measurement of the antihydrogen hyperfine splitting at a precision that is of fundamental physics interest, and a first demonstration of 1s-2s spectroscopy in antihydrogen.

Alpha是基于CERN的实验。 Alpha合作涉及来自8个国家的15个机构的科学家。这些科学家中有三分之一来自加拿大研究实验室和大学。自2005年成立以来，加拿大团队已从NSERC持有大量的项目资金，并为众多Alpha成就做出了重大贡献。 Alpha项目的目的是测量和比较“抗溶质原”的某些特性，即中性反物质的最简单原子形式与普通氢的特性。为此，协作将直接检验和挑战有关物质与差异（“对称”）的基本理论 反物质，可以说是物理学中最大的未解决问题之一。近年来，Alpha在追求其主要目标方面取得了许多重要和备受瞩目的里程碑，包括：新型的低温冷却技术应用（2010年），Stable（2010）和长期（2011年）中性抗异味的捕获，以及对陷阱抗Hyydragen（2012）的主要微波研究证明。 Alpha目前正在进行重大升级，加拿大集团在NSERC的支持下为此做出了重大贡献。新的设备（Alpha-2）将允许光学访问被困的抗溶质生成，以进行精确激光光谱以及改进的微波光谱法。 Alpha-Canada对Alpha-2的贡献包括：新型抗原子陷阱低温恒温器的设计和制造，升级到检测器读数系统和数据获取，新（和改进的）陷阱电子设备以及激光和微波系统。 在此提案中，我们要求资金支持令人兴奋且高度可见的三年研究计划。这将导致有史以来首次对原子抗溶性的激光冷却，这是对基本物理学兴趣的精确度的改进测量，并首次证明了抗血液中的1S-2S光谱法。