2017 Fiscal Year Final Research Report
Development of a gravimeter based on magnetic levitation with diamagnets
| Project/Area Number |
26610139
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Solid earth and planetary physics
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| Research Institution | The University of Tokyo |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
高森 昭光 東京大学, 地震研究所, 助教 (00372425)
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| Project Period (FY) |
2014-04-01 – 2018-03-31
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| Keywords | 磁気浮上 / 重力計 |
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| Outline of Final Research Achievements |
In order to overcome the difficulties in gravimeters based on mechanical spring suspension, possibilities of a gravimeter based on magnetic suspension using diamagnets are investigated. A finite element method analysis on the system consisting of Neodimium magnets and pyrolytic carbon was conducted for its mechanical and electromagnetic properties. As a result, it was found that this system can be a good candidate as the basic principle of gravity sensors using magnetic suspension. The superconducting gravimeter, as one of the realizations of magnetic-suspension-type gravimeters, was also studied for its response to horizontal acceleration. It was shown that the mechanical eigenfrequency of the superconducting gravimeter CT-36 in the horizontal direction is approximately 3 Hz.
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| Free Research Field |
測地学
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