Collaborative Research: Development of a turnkey SQUID microscope platform for paleomagnetism and installation in a National Multi-User Facility

合作研究：开发用于古地磁学的交钥匙 SQUID 显微镜平台并安装在国家多用户设施中

• 批准号: 1906042
• 负责人: Joseph Kirschvink
• 金额: $ 4.23万
• 依托单位: California Institute of Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-09-15 至 2024-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1906042&HistoricalAwards=false
• 关键词: Collaborative; Research; Development; turnkey; SQUID

Rocks preserve important records of ancient geomagnetic fields. However, some records have remained inaccessible due to complex magnetic histories and mineralogy. The main goals of this collaborative project are to develop and build a magnetic microscope at MIT to measure paleomagnetic records in Earth rocks and other geological samples and to upgrade a second instrument at Caltech to enable these measurements. These will share a common platform that will expand paleomagnetic research opportunities nationally and enable independently verifying results. In addition, details of the platform will be disseminated to the scientific community to enable a broad range of applications.Many rocks that might preserve important records of ancient geomagnetic fields have remained inaccessible due to a combination of intricate magnetic histories and complex mineralogies. The main goals of this collaborative project are to develop and build a new Scanning Superconducting QUantum Interference Device (SQUID) Microscope (SSM) platform at MIT to measure paleomagnetic records in Earth rocks and other geological samples and to upgrade a second instrument at Caltech to enable these measurements. These will share a common platform that will allow for conducting multiple research projects from different research groups concurrently and for independently verifying results. In addition, details of the platform will be disseminated to the scientific community to enable a broad range of applications. This new SSM will have a unique combination of capabilities, which include cryogen-free operation for lower costs and long uninterrupted use, magnetic moment sensitivity of better than 1x10^-15 Am2, and spatial resolution of 100 micrometers. It will map the component of the magnetic field normal to the sample plane in a grid of positions with area up to 50 mm x 50 mm and with scanning speed of up to 5 mm/s.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

岩石保存了古代地磁场的重要记录。然而，由于复杂的磁历史和矿物学，一些记录仍然无法获取。该合作项目的主要目标是在麻省理工学院开发和建造一台磁力显微镜，以测量地球岩石和其他地质样本中的古地磁记录，并升级加州理工学院的第二台仪器以实现这些测量。这些将共享一个共同平台，扩大全国范围内的古地磁研究机会，并能够独立验证结果。此外，该平台的详细信息将向科学界传播，以实现广泛的应用。由于错综复杂的磁历史和复杂的矿物学，许多可能保存古代地磁场重要记录的岩石仍然无法访问。该合作项目的主要目标是在麻省理工学院开发和建造一个新的扫描超导量子干涉装置（SQUID）显微镜（SSM）平台，以测量地球岩石和其他地质样本中的古地磁记录，并升级加州理工学院的第二台仪器，以实现这些测量值。这些将共享一个通用平台，允许同时进行来自不同研究小组的多个研究项目并独立验证结果。此外，该平台的详细信息将向科学界传播，以实现广泛的应用。这种新型 SSM 将具有独特的功能组合，包括可实现低成本和长时间不间断使用的无冷冻剂操作、优于 1x10^-15 Am2 的磁矩灵敏度以及 100 微米的空间分辨率。它将在面积达 50 mm x 50 mm 的位置网格中绘制垂直于样品平面的磁场分量，扫描速度高达 5 mm/s。该奖项反映了 NSF 的法定使命，并被视为值得通过使用基金会的智力优点和更广泛的影响审查标准进行评估来支持。