Upgrade of Superconducting Rock Magnetometer

超导岩石磁力计升级改造

• 批准号: 0004064
• 负责人: Gautam Sen
• 金额: $ 6.5万
• 依托单位: Florida International University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-04-01 至 2003-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0004064&HistoricalAwards=false
• 关键词: Upgrade; Superconducting; Rock; Magnetometer

0004064SenThis grant provides partial support for the costs of upgrading the superconducting rock magnetometer (SRM) at Florida International University with direct current (DC) superconducting quantum interference devices (SQUIDs), replacing the cold head and cryocooler compressor, and modifying the helium dewar. The PI has documented that the current SRM at FIU (11 years old) is fraught with problems including, rapid He boil off, frequent ice blocks in the He plumbing lines and a non-functional y-axis radio frequency (Rf) SQUID leaving only two components of the magnetic field measurable with the aging machine. DC SQUIDs offer over an order of magnitude increase in measurement sensitivity over Rf SQUIDs and are now the de facto standard sensors used in state-of-the-art SRMs by leading paleomagnetists. The addition of a new He dewar and cryocooler compressor will also, increase available analysis time on this instrument between fills, decrease the operational costs of the instrument, and increase the useful life of the instrument by reducing the number of thermal cycles required per operating hour. The upgraded magnetometer will allow for continued studies of paleomagnetic field behavior near polarity transitions and will be used to train a racially diverse crop of undergraduate and M.S. students in paleomagnetic research methods.***

0004064SENTHIS GRANT提供了佛罗里达国际大学升级超导岩石磁力计（SRM）成本的部分支持，该大学具有直流电流（DC）超导量子干扰设备（squids），取代冷头和冷冻机压迫器，并修改硫型螺旋体。 PI记录了FIU的当前SRM（11岁）充满了问题，包括，快速沸腾，He管道线中的频繁冰块和一个非功能性的Y轴射频（RF）squid，只剩下两个磁场的组件，可衡量磁场的两个组件。 直流鱿鱼的测量灵敏度比RF鱿鱼提高了数量级，现在是领先的古磁性学家在最先进的SRMS中使用的事实上的标准传感器。 新的HE HE DEWAR和CRYOCOOLER压缩机还将增加在填充之间的该仪器上的可用分析时间，降低仪器的运行成本，并通过减少每个操作小时所需的热周期数量来增加仪器的使用寿命。升级的磁力计将允许对极性转变附近的古磁场行为进行继续研究，并将用于训练种族多样的本科生和M.S.古磁研究方法的学生***