Chicago Air Shower Array

9322583克罗宁这个奖项是为了运营犹他州达格威的芝加哥空气簇射阵列(CASA)，为期三年。该阵列是由美国国家科学基金会资助建造的，历时三年，以核实文献中所报道的孤立的高能伽马源的存在。这是世界上最大的此类阵列，它与密歇根大学(MIA)在同一地点建造的Muon阵列一起运行。两者的结合使之成为区分入射伽马射线和入射带电粒子的有力工具。他们已经运行了大约一年，他们的结果以及其他实验的结果表明，所谓的来源不再存在。如果来源是间歇性的，CASA希望在接下来的三年内找到它们。此外，他们将能够为我们对宇宙线组成和能谱的知识做出重大贡献。他们还有一个计划，通过将他们的观测与苍蝇眼的观测协调起来，扩大他们的能量覆盖范围。苍蝇眼是犹他大学在杜格韦运营的另一种探测器，它通过探测大气荧光来观测更高的能量，在覆盖范围和能量上与CASA重叠。***

9322583 Cronin This award is to operate the Chicago Air Shower Array (CASA) at Dugway Utah for three years. The array was constructed with NSF funding over a period of three years to verify the existence of isolated high energy gamma sources which had been reported in the literature. This is the largest array of this kind in the world and it operates in conjunction with a muon array built by the University of Michigan (MIA) on the same site. The combination of the two make a powerful tool to distinguish between incident gamma rays and incident charged particles. They have operated for about one year and their results as well as the results from other experiments have shown that the alleged sources no longer exist. If the sources are episodic, CASA hopes to find them over the course of the next three years. In addition they will be able to make significant contributions to our knowledge of the cosmic ray composition and to the energy spectrum. They also have a program to extend their energy reach by coordinating their observations with those of the Fly's Eye, another detector at Dugway operated by the University of Utah that looks at even higher energies by detecting atmospheric fluorescence, and which overlaps CASA in coverage and in energy. ***