Prototype REBCO Z1 and Z2 shim coils for ultra high-field.
Prototype REBCO Z1 and Z2 shim coils for ultra high-field.
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用于超高场的 REBCO Z1 和 Z2 匀场线圈原型。
DOI:
10.1038/s41598-020-78644-0
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发表时间:
2020-12-15
影响因子:
4.6
通讯作者:
Iwasa Y
中科院分区:
文献类型:
--
作者:
Park D;Lee J;Bascuñán J;Li Z;Iwasa Y
We present promising results of novel high-temperature superconducting (HTS) shim coil prototypes that circumvent the size and strength limitation of our earlier innovative HTS shim concept based on 46-mm wide REBCO tape. The HTS shim coil is placed inside the HTS magnet, mainly for ultra-high-field (> 1 GHz or 23.5 T) NMR magnets, and thus unaffected from the windings’ diamagnetic wall effects. One full-scale version will be applied to clean up Z1 and Z2 harmonic errors in the MIT 1.3-GHz high-resolution NMR magnet composed of an 835-MHz HTS insert, while another version for an MIT 1-GHz microcoil NMR magnet whose small-scale model we are currently building. The prototype sets were wound with a 2-pile, 1.03-mm wide, 0.30-mm thick REBCO conductor. Operated at 77 K, the Z1 shim set generated a 1st harmonic field strength of 179 kHz/cm at 70 A, while the Z2 shim set, composed of two pairs, Z21 and Z22, generated the 2nd harmonic field of 141 kHz/cm2 at 50 A. Together with discussion on technical challenges for this REBCO shim coil concept, we demonstrate its feasibility for the next generation of ultra-high-field (UHF) HTS NMR magnets.
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影响因子:
3.6
作者:
Iguchi, S.;Piao, R.;Yanagisawa, Y.
通讯作者:
Yanagisawa, Y.
影响因子:
4
作者:
Iwasa, Yukikazu;Hahn, Seungyong;Bascunan, Juan
通讯作者:
Bascunan, Juan
影响因子:
3.6
作者:
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通讯作者:
Akachi, Ken
影响因子:
3.2
作者:
Hahn, Seungyong;Bascunan, Juan;Iwasa, Yukikazu
通讯作者:
Iwasa, Yukikazu
影响因子:
1.8
作者:
Park, Dongkeun;Bascunan, Juan;Iwasa, Yukikazu
通讯作者:
Iwasa, Yukikazu