MRI: Acquisition of a Versatile Cryogen-Free Dilution Refrigerator for Materials and Condensed Matter Physics Research

MRI：采购用于材料和凝聚态物理研究的多功能无制冷剂稀释制冷机

• 批准号: 1531389
• 负责人: Susanne Stemmer
• 金额: $ 54.39万
• 依托单位: University of California-Santa Barbara
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-09-01 至 2018-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1531389&HistoricalAwards=false
• 关键词: MRI; Acquisition; Versatile; Cryogen; Free

Measurements of the physical properties of materials at ultralow temperatures are key to discoveries in condensed matter physics, the science of new and emerging materials, and future technologies, such as quantum computing and new detectors. The Major Research Instrumentation program supports the acquisition of a versatile dilution refrigerator system with an integrated magnetic field capability for an interdisciplinary, multi-user facility at the University of California, Santa Barbara (UCSB). The system will be housed in the Low Temperature Facility at UCSB, which already serves a diverse and interdisciplinary user community. It will be available to all members of the University community, to researchers at other academic institutions, and to industry throughout Southern California and beyond. The instrument will greatly expand the training opportunities for graduate and undergraduate researchers, who are the primary hands-on users. Both formal (course work) and practical training will be provided, while the facility's staff will be responsible for student training, safety, day-to-day oversight, and routine maintenance. In addition to its central role in the training of the next generation of scientists and engineers, the dilution refrigerator will be ideally suited for undergraduate design and research projects, and serve to expose undergraduate researchers to low temperature science and measurement techniques. The instrument addresses critical needs in materials characterization at ultra-low temperatures within a wide range of interdisciplinary research programs at UCSB that focus on low-dimensional materials, quantum computing, the realization and discovery of new quantum phenomena and phases, the development of new measurement techniques, and the characterization of the electronic structure of low-mobility materials. The Low Temperature Facility at UCSB already serves a diverse and interdisciplinary user community, who will have access to the dilution refrigerator system. The dilution system takes advantage of recent developments in technology that greatly facilitate its operation as a multiuser facility. These include recent advances in pulse-tube technology, allowing for cryogen-free and fully automated operation. The system is load-locked, which increases the number of samples that can be analyzed per instrument time. These features facilitate accessibility and ease of operation, dramatically reduce maintenance and operating costs, and allow for a high throughput of samples.

在超高温度下材料的物理特性的测量是凝结物理学，新和新兴材料的科学以及未来技术（例如量子计算和新检测器）的关键。 主要的研究仪器计划支持在加利福尼亚大学圣塔芭芭拉分校（UCSB）的跨学科，多用户设施的综合磁场能力中获取多功能稀释冰箱系统。 该系统将安置在UCSB的低温设施中，该设施已经为多样化和跨学科的用户社区提供服务。 它将向大学社区的所有成员，其他学术机构的研究人员以及整个南加州及其他地区的行业提供。 该乐器将大大扩大主要动手用户的研究生和本科研究人员的培训机会。 将提供正规的（课程工作）和实践培训，同时该设施的员工将负责学生培训，安全，日常监督和日常维护。 除了其在下一代科学家和工程师培训中的核心作用外，稀释冰箱还将非常适合本科设计和研究项目，并有助于将本科研究人员暴露于低温科学和测量技术中。该仪器在UCSB的广泛跨学科研究计划内解决了材料表征的关键需求，该计划的范围是低维材料，量子计算，实现和发现新的量子现象和相位，新测量技术的发展以及低含量材料的电子结构的表征。 UCSB的低温设施已经为多样化和跨学科的用户社区提供服务，他们将可以使用稀释冰箱系统。 稀释系统利用了技术的最新发展，从而极大地促进了其作为多源设施的运营。 其中包括脉冲管技术的最新进展，从而实现无低温和完全自动化的操作。 该系统是负载锁定的，这增加了每个仪器时间可以分析的样品数量。 这些功能可促进可及性和易于操作，大大降低维护和运营成本，并允许样品大量吞吐量。