Detection Of GeV Cosmic Rays In An Undergraduate Laboratory

我们正在创建一个新的和创新的本科实验室 在高能物理学中，基于对灾难性能量的研究， 在费米实验室完成的μ介子损耗实验， 物理评论D 在费米实验室的实验中， 用一个能谱仪研究了宇宙线的能量沉积谱。 铁/闪烁体量热计。 本科生实验室 该版本由铅和闪烁体构成。 虽然典型的宇宙射线μ子存款很少的能量， 一万个μ子中就有一个会经历灾难性的能量损失， 产生一个高能量的电磁雨 检测器 学生们不仅研究电磁簇射 他们自己，但也使用最高的能量淋浴估计， 宇宙射线光谱 这个仪器很小， 在实验室的工作台上，却让学生接触到最先进的技术， 用于量热和数据采集的技术， 在现代粒子物理学实验中。

We are creating a new and innovative undergraduate laboratory in high-energy physics, based on a study of catastrophic energy loss by muons which was done at Fermilab and published this year in Physical Review D. In the Fermilab experiment, the energy deposition spectrum of cosmic rays was studied using an iron/scintillator calorimeter. The undergraduate laboratory version is being constructed of lead and scintillator. Although typical cosmic-ray muons deposit very little energy, one in 10,000 muons undergo a catastrophic energy loss and create a high-energy electromagnetic shower within the detector. Students not only study the electromagnetic showers themselves but also use the highest energy showers to estimate the cosmic ray spectrum. The apparatus is small enough to fit on a lab bench, yet exposes the student to state-of-the-art techniques for calorimetry and data acquisition which are used in present-day particle-physics experiments.