2013 Fiscal Year Final Research Report
Realization of high-strength superconducting bulk magnets using split-type coil and the application to magnetic separation
| Project/Area Number |
23560002
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Applied materials science/Crystal engineering
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| Research Institution | Iwate University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
NAITO Tomoyuki 岩手大学, 工学部, 助教 (40311683)
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| Project Period (FY) |
2011 – 2013
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| Keywords | パルス着磁 / 磁場中冷却着磁 / REBCO超電導バルク / MgB2超電導バルク / 捕捉磁場 / シミュレーション / 磁気分離 |
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| Research Abstract |
The magnetic flux trap phenomena in various superconducting bulks (REBCO, MgB2) have been investigated using pulsed field magnetization (PFM) and field-cooled magnetization (FCM) by experiments and numerical simulation in order to enhance the trapped field, where various-type pulsed coils (solenoid-type, split-type) were used. Two-dimensional and three-dimensional analyses of electromagnetic and thermal fields were constructed using finite element method (FEM). The results of the simulation reproduce well the experimental ones.
In the PFM experiments for the high-quality MgB2 bulks, flux jump took place frequently, which was a clear contrast with the conventional MgB2 bulk, which comes from the instability of the magnetic flux in the superconductor. The instability can be identified by the stability papameter beta and minimum propagation zone lm.
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