Canadian Participation in the Electron-Ion Collider

电子-离子对撞机(EIC)是美国能源部将在本十年内在纽约长岛建造的一个重要的新对撞机设施。在EIC上，极化的电子将与极化的质子、极化的轻离子和重核发生碰撞，其强度远远超过目前可用的强度。该设施将回答对我们理解原子至关重要的基本问题，也是当今核物理议程中不可或缺的问题。-核子的质量是如何产生的？-核子的自旋是如何产生的？-稠密胶子系统的涌现特性是什么？-奇异强子的组成是什么？EIC项目在2019-2020年实现了两个里程碑，第一个关键决定(CD-0)确定了任务需求，以及布鲁克海文国家实验室的选址。该项目的目标是在2023年底之前完成接下来的三项关键决定，并在2030年之前开始运营。EIC用户小组正在协调国际努力，以测量两个对撞机相互作用区。加拿大亚原子物理学家密集参与了这一新设施的规划，并特许了一个多机构的EIC加拿大合作来协调参与。EIC加拿大协作的成员参与指导委员会和EIC用户组的其他工作组。该提案要求为EIC加拿大协作的调查人员和总部提供为期两年的支持。由于EIC项目进展迅速，我们要求每两年提供一次支助，以便经常重新评估最佳支助水平。在这两年的项目期内，我们将支持两个M.Sc。里贾纳大学的学生，两名理科硕士。马尼托巴大学的学生和芒特艾利森大学的四名本科生。这些学生将：-确定电生产中K+形状因子的测量是否将成为强子紧急质量生成的可行探测器，-回顾早期使用预期探测器的最新性能参数来测量电弱混合角的研究，-为康普顿偏振测量中的电子检测开发一个概念设计，-建造事件发生器以通过检查通道灵敏度来研究XYZ态的光产生，-为量热学的模拟和概念发展做出贡献。四位M.Sc.四名本科生不会单独工作；他们将通过定期的虚拟和面对面的EIC加拿大会议进行联系。这些学生将作为我们行为准则的一部分，在一个专门的初级研究委员会中派代表参加合作。通过让学生参与EIC的活动，我们将为他们未来在国内外研究领域的职业生涯做好准备。特别是，M.Sc。学生们将为EIC的博士职位做好充分的准备，这些职位计划在未来几年内逐步增加。

The Electron-Ion Collider (EIC) is a major new collider facility to be built on Long Island, NY, by the US Department of Energy in this decade. At the EIC, polarized electrons will collide with polarized protons, polarized light ions, and heavy nuclei at intensities far beyond what is currently available. The facility will answer fundamental questions central to our understanding of atoms, and integral to the agenda of nuclear physics today. - How does the mass of the nucleon arise? - How does the spin of the nucleon arise? - What are the emergent properties of dense systems of gluons? - What is the composition of exotic hadrons? The EIC project achieved two milestones in 2019-2020, with the first critical decision (CD-0) establishing mission need, and with the site selection of Brookhaven National Lab. The project aims to complete the next three critical decisions by the end of 2023, and to start operations by 2030. The EIC Users Group is coordinating the international efforts to instrument the two collider interaction regions. Canadian subatomic physicists have participated intensively in the planning of this new facility and have chartered a multi-institutional EIC Canada Collaboration to coordinate participation. Members of the EIC Canada Collaboration are involved in the Steering Committee and in other working groups of the EIC Users Group. This proposal requests support for investigators and HQP in the EIC Canada Collaboration for a period of two years. Due the rapid pace at which the EIC project is ramping up, we are requesting support in two years increments so as to allow for frequent re-evaluation of the optimal level of support. In this two year project period we will support two M.Sc. students at the University of Regina, two M.Sc. students at the University of Manitoba, and four undergraduate research students at Mount Allison University. These students will: - determine whether measurements of the K+ form factor in electroproduction will be a feasible probe of emergent mass generation in hadrons, - revisit earlier studies of electroweak mixing angle measurements with updated performance parameters for the anticipated detectors, - develop a conceptual design for electron detection in Compton polarimetry, - build event generators to study photoproduction of XYZ states by examining channel sensitivity, - contribute to simulations and the conceptual development of calorimetry. The four M.Sc. and four undergraduate research students will not work in isolation; they will be in contact through regular virtual and in-person EIC Canada meetings. The students will be represented in the collaboration in a dedicated junior research committee established as part of our Code of Conduct. By engaging students in the activities of the EIC, we will prepare them for future careers inside and outside research. In particular, the M.Sc. students will be well prepared for Ph.D. positions on EIC, which are scheduled to ramp up in the next few years.