Upgrading of USSA-2000 Multi-anvil facility

USSA-2000是一种Kawai型多砧高压装置，是斯托尼布鲁克高压实验室的重要组成部分。 拟议工作的驱动智力价值包括以下项目的继续：在高压和高温下的声速测量，扩散研究，相平衡研究，弹性测量的多晶合成，流变测量的多晶合成，以及结构和弹性测量的单晶合成。 该合同将允许更换第一阶段砧座并升级液压泵系统。 我们采用的砧座设计可容纳整个2000吨的加载框架，而目前的砧座将最大力限制在1200吨。 新的泵送系统将允许自动加载和卸载，从而节省操作员的时间和限制操作员的错误。拟议的发展的更广泛的影响包括：研究生教育作为研究项目的一部分，本科教育，因为它是高度使用在我们的REU夏季计划，研究项目的支持科学界的“成本”的基础上。 扩大的力量能力将使美国社区获得更大的力量-因此，在相同的压力设备比目前可用的更大的体积。 这在拜罗伊特的5000吨设备上证明是非常有用的。 虽然目前的系统是在一个较低的力量，这是一个经济的升级，至少使用现有的加载系统的全部能力。

EAR-0447135WeidnerThe USSA-2000, a Kawai-type multi-anvil high-pressure apparatus, is a vital element in the Stony Brook high pressure laboratory. The driving intellectual merit of the proposed work includes the continuation of the following projects: acoustic velocity measurements at high pressure and temperature, diffusion studies, phase equilibria studies, polycrystal synthesis for elasticity measurements, polycrystal synthesis for rheology measurements, and single crystal synthesis for structure and elasticity measurements. This award will permit the replacement of the first stage anvils and upgrade the hydraulic pumping system. We utilize an anvil design that will accommodate the entire 2000 tons of the loading frame, whereas the current anvils limit the maximum force to 1200 tons. The new pumping system will allow automatic loading and unloading, thus saving operator time and limiting operator error. The broader impact of the proposed development include: graduate student education as part of research projects, undergraduate education as it is highly used in our REU summer program, support of research projects for the science community on a 'at cost' basis. The expanded force capability will give the US community access to a larger force - hence larger volume at-the-same pressure apparatus than is currently available. This has proven quite useful with the 5000 ton apparatus at Bayreuth. While the current system is at a lower force, it is an economical upgrade that at least uses the full capacity of the existing loading system.