The muX project is conducting a series of muonic X-ray measurements in medium- and high-Z nuclei at PSI, utilizing a high-purity germanium detector array, in-beam muon detectors, and a modern digital data-acquisition system. A novel hydrogen transfer target was developed, enabling measurements with as little as a few micrograms of target material. First measurements with radioactive Cm and Ra targets were conducted, aimed at determining their nuclear charge radii. These serve as important input for upcoming atomic parity violation experiments. The apparatus is also used to perform a feasibility study of an atomic parity violation experiment with the 2s − 1s muonic X-ray transition. In addition, the setup has been made available for a wider range of nuclear, particle, and solid-state physics measurements.

中文翻译：

---

muX 项目

muX 项目利用高纯度锗探测器阵列、束内 μ 子探测器和现代数字数据采集系统，在 PSI 的中高 Z 核中进行一系列 μ 子 X 射线测量。开发了一种新型的氢转移目标，只需几微克的目标材料即可进行测量。对放射性 Cm 和 Ra 目标进行了第一次测量，旨在确定它们的核电荷半径。这些作为即将到来的原子奇偶校验违反实验的重要输入。该设备还用于执行具有 2s - 1s μ子 X 射线跃迁的原子奇偶校验违反实验的可行性研究。此外，该设置可用于更广泛的核、粒子和固态物理测量。