Acquisition of a Versatile Dilution Refrigerator System for Testing Low Temperature Particle Detectors

在旧金山弗朗西斯科州立大学（SFSU）物理和天文学系将获得一个多功能的稀释冰箱系统，专门用于测试低温基本粒子探测器制造的物理硕士的学生在SFSU和合作的研究人员和博士。附近机构的学生包括斯坦福大学（SU）、劳伦斯利弗莫尔国家实验室（LLNL）和加州大学伯克利分校（UCB）。 这些新的探测器将实现无与伦比的灵敏度和分辨率通过感测准粒子，声子，和电子空穴对产生的入射粒子与超导和绝缘晶体中的原子核和电子碰撞。 研究工作的最初目标是开发用于暗物质搜索，中微子实验和X射线天文学测量的探测器。 随着技术的成熟，其他应用可能包括测量散装材料中的超低α放射性，痕量元素的X射线荧光。

The San Francisco State University (SFSU) Department of Physics and Astronomy will acquire a versatile dilution refrigerator system dedicated to the testing of low temperature elementary particle detectors fabricated by physics Master's students at SFSU and by collaborating researchers and Ph.D. students at nearby institutions including Stanford University (SU), Lawrence Livermore National Laboratory (LLNL), and the University of California at Berkeley (UCB). These novel detectors will achieve unparalled sensitivity and resolution by sensing quasiparticles, phonons, and electron-hole pairs generated by collisions of incident particles with nuclei and electrons in superconducting and insulating crystals. The initial goals of the research effort are to develop detectors for dark matter searches, neutrino experiments, and X-ray astronomy measurements. As the technology matures, additional applications are likely to include measurements of ultralow alpha radioactivity in bulk materials, Xray fluorescence for trace elements.