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High-Tc Superconductor Detection Coils for a Magnetic Resonance System |
| KANG Lin1;WU Pei-Heng1;PAN Jun1;CAI Wei-Xing1;YANG Sen-Zu1;CAO Chun-Hai2 |
| 1Research Institute of Superconductor Electronics, Department of Electronic Science and Engineering, Nanjing University, Nanjing 210093
2Institute of Nanjing Electronics Devices, Nanjing 210016 |
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| Cite this article: |
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KANG Lin, WU Pei-Heng, PAN Jun et al 2002 Chin. Phys. Lett. 19 1380-1381 |
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Abstract Considering that in a magnetic resonance system, if the detection coil contributes dominantly to the system noise, the performance of the whole system can certainly be improved by switching to a detection coil made of high-temperature superconductor, and using YBa2Cu3O7 thin films on 25 x 25mm2 LaAlO3 substrates, we have prepared two kinds of detection coils, i.e., single-coil and two-coil. Encouragingly, their quality factors are measured to be Q > 2500 for two-coil (at 22.566 MHz and 77 K) and Q > 5500 for single-coil (at 92.3 MHz and 77 K), respectively. Here, we describe the details of the design, fabrication and tests of the coils.
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| Keywords:
85.25.-j
74.76.Bz
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Published: 01 September 2002
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