Cryopump for condensed matter physics thin film laboratory

凝聚态物理薄膜实验室中最通用和最常用的系统具有六个口袋可旋转电子束蒸发源，可以同时使用两个热源。它被用于阿尔伯塔大学和国家纳米技术研究所的几个研究小组的工作中，从用于光发射应用的荧光纳米晶体到许多研究项目中的电子显微镜样品制备，再到用于医疗诊断，威胁检测和工业过程控制的集成光谱仪的开发。几乎所有的东西，从钟罩（最初是玻璃的，现在是不锈钢的）到电子枪和热蒸发器，电源，厚度监测器，样品架，模板系统，温度控制器：所有的一切-都已经升级到我们现在拥有校园里最先进的系统。只有高真空泵，绝对必要的操作，是原始的-它是真正的古老的任何标准的科学设备。事实上，它比这项拨款申请的主要调查员还要老。虽然这个系统几十年来维护得很好，但现在这个旧泵送系统上的水冷却管道已经腐蚀和泄漏。一旦冷却管线泄漏变得无法管理，系统将变得不可用。经过40多年的运营，是时候考虑更换了。我们希望用一台现代化的无油真空泵取代这台古老的设备，这不仅可以使基础设施在未来几十年内继续运行，而且还可以使其运行更清洁，更便宜，因为我们要求的新泵机组只需要最低限度的耗材进行维护和操作。这是该提案的核心：更换超过40年的旧设备的基础设施，使大量使用的实验室能够继续运行，将改善基础设施的清洁度，从而提高可以完成的科学质量，并将代表长期的成本节约。

The most versatile and heavily used system in the Condensed Matter Physics thin film laboratory features a six-pocket rotatable electron-beam evaporation source that can be operated simultaneously with two thermal sources. It is used in the work of several research groups at the University of Alberta and the National Institute for Nanotechnology, in areas ranging from fluorescent nanocrystals for light emission applications, to specimen preparation for electron microscopy in many research projects, to the development of integrated spectrometers for medical diagnostics, threat detection, and industrial process control. Virtually everything from the bell jar (originally glass, now stainless steel) to the e-gun and thermal evaporators, power supplies, thickness monitors, specimen holders, shuttering system, temperature controllers: all of it - has been upgraded to the point where we now have the most advanced system on campus. Only the high vacuum pump, absolutely necessary for operation, is original - and it is truly ancient by any standard for scientific equipment. It is, in fact, older than the principle investigator on this grant application. Although the system was well maintained over many decades, now the water cooling lines on this old pumping system are corroded and leaking. Once the cooling line leakages become unmanageable, the system will become unusable. After more than 40 years of operation, it is time to consider a replacement. We hope to replace this ancient unit with a modern, oil free vacuum pump that will not only permit continued operation of the infrastructure into the next decades, but will make it run cleaner and much more cheaply, as the new pumping unit we request requires only a minimum of consumables for maintenance and operation. That is the heart of this proposal: replacement infrastructure for more than 40-year-old equipment that will permit a heavily used lab to keep running, will improve the cleanliness of the infrastructure and therefore the quality of the science that can be done, and will represent a long term cost savings.