Upgrade of Research Equipment: Thermal Ionization Mass Spectrometer in the Department of Earth and Environmental Sciences, University of Rochester

这一支持将升级罗切斯特大学已有19年历史的热电离质谱仪(TIMS)。在为该仪器的研究和培训而连续采集数据19年后，此次升级涉及将最近经历故障的五个数字电压表更换为一个数据采集单元。升级还包括用工厂建造的新装置取代TIMS的旧高压装置。这一升级将使设在罗切斯特的TIMS设施得以继续运行，将该仪器的寿命和使用寿命再延长一次，估计为8-10年。它还将避免购买新仪器的高昂价格，这是此次升级价格的近十倍。预计拟议的升级和服务将使运行良好近20年的罗切斯特TIM系统在轻松和获取高质量数据方面达到与新系统相同的标准。这一升级将对地球科学材料的地球化学研究产生相当大的影响，特别是在本科生和研究生以及罗切斯特大学地球科学系教员对几种元素的同位素比率的精确测量方面。与过去一样，首席调查员还将与其他国家和国际机构的教职员工和学生合作进行地球化学研究。罗切斯特目前的两名女学生，一名毕业生和另一名本科生，以及很可能更多的几名，将直接参与这一升级后的仪器的研究。升级后的仪器进行的所有研究的结果将在国家和国际会议上提出，并在同行评议的期刊上发表。

This support will upgrade the 19 year- old Thermal Ionization Mass Spectrometer (TIMS) at the University of Rochester. The upgrade, after 19 years of continuous data acquisition for research and training with the instrument, involves replacing the five digital voltmeters that have experienced recent failures by a single data acquisition unit. The upgrade also includes the replacement of the old high voltage unit of the TIMS by a factory-built new unit. This upgrade would allow continued operation of the TIMS facility at Rochester by extending the life and utility of this instrument for another estimated period of 8-10 years. It will also avoid the high price of purchasing a new instrument, which is nearly ten times the price of this upgrade. It is expected that the proposed upgrade and service will bring the Rochester TIMS, that has been functioning well for almost 20 years, to the same standard in the ease and acquisition of quality data as when it was new. This upgrade will have a considerable impact on geochemical research in earth science materials, particularly in precise measurements of isotope ratios of several elements by undergraduate and graduate students and the faculty in the Department of Earth Sciences at the University of Rochester. The principal investigator, as in the past, will also collaborate in geochemical research with faculty and students of other national and international institutions. Two current female students in Rochester, one graduate and another undergraduate, and very likely several more, will be directly involved in research with this upgraded instrument. The results of all research conducted by the upgraded instrument will be presented in national and international meetings and published in peer-reviewed journals.