University of Utah - Operation of the Telescope Array, TALE, and the TAx4 Expansion

宇宙射线是来自太空的高能亚原子粒子，以接近光速的速度传播。宇宙射线的起源及其加速机制尚不清楚，但它们可能起源于银河系内外的极端天体物理现象。望远镜阵列（TA）是北半球最大的宇宙射线天文台。TA位于犹他州德尔塔外，代表了美日联合努力，旨在研究宇宙中最高能量粒子的性质和起源。这笔授予犹他大学的奖金将支持TA的持续运行、TA低能量扩展（TALE）和扩展后的天文台（TAx4）上线。犹他大学是TA的主办机构，因此在TA的日常运作中起着关键作用。该奖项还将支持犹他大学小组参与天体物理科学项目整合研究和教育（ASPIRE）计划，该计划通过交互式教育材料网站和访问当地学校吸引地区教师、学生和公众。该小组还将在受益于TA位置和基础设施的其他领域主持相关实验。TA实验的主要目的是测量最高能量宇宙射线的能量和空间分布以及化学成分，以解决超高能量宇宙射线的性质和起源问题。犹他大学的宇宙射线物理小组在TA的设计、集成、部署、操作和管理方面发挥着关键作用。这些努力包括设施和探测器的维护，观察班次的人员配备，数据处理，模拟和分析，以及遵守土地管理局的规定。

Cosmic rays are highly energetic sub-atomic particles from space that travel at velocities near the speed of light. The origin of cosmic rays and their acceleration mechanisms are unknown, but they likely originate in extreme astrophysical phenomena both within and beyond our galaxy. The Telescope Array (TA) is the largest cosmic ray observatory in the northern hemisphere. Located outside Delta, Utah, and representing a joint US-Japanese effort, TA was designed to study the nature and origin of the highest energy particles in the Universe. This award to the University of Utah supports the continued operation of TA, the TA Low Energy extension (TALE), and the expanded observatory (TAx4) as it comes online. The University of Utah is the host institution for TA and therefore plays a critical role in its daily operation. This award will also support the University of Utah group's involvement in the Astrophysics Science Project Integrating Research and Education (ASPIRE) program, which engages area teachers, students, and the public through a web site of interactive educational materials and visits to local schools. The group will also host associated experiments in other fields that benefit from the TA location and infrastructure.The primary objectives of the TA experiment are to measure the energy and spatial distributions, and the chemical composition of the highest energy cosmic rays in order to address the nature and origin of ultra-high energy cosmic rays. The cosmic ray physics group at the University of Utah plays critical roles in the design, integration, deployment, operation, and management of TA. These efforts include facility and detector maintenance, staffing for observing shifts, data handling, simulation and analysis, and maintaining compliance with the Bureau of Land Management regulations.