Quench detection and protection system design and analysis of the 7 T superconducting magnet

LONG Feng; SHI Yi; LIU Fang; NI Zhi-Peng

doi:10.1088/1674-1137/34/4/014

Chinese Physics C> 2010, Vol. 34> Issue(4) : 492-495 DOI: 10.1088/1674-1137/34/4/014

Quench detection and protection system design and analysis of the 7 T superconducting magnet

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Abstract：
A NbTi 7 T superconducting magnet with a 338 mm bore system was rebuilt and the first experiment was carried out in Jan. 2009. The balancing-bridge method used for the quench detection system is analyzed and an improvement of the principle of balancing-bridge conformation is given. The inductances of the coils are calculated to estimate the proportion of the bridge arms. The appropriate parameters are selected for the balancing-bridge.

References

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. Augueres J L, Aymar R, Bon Mardion G et al. Cryogenics,1980, 9: 5292. Aymar R, Genevey P, Palanque S et al. Cryogenics, 1980,9: 5213. LIU Hua-Jun, WU Yu, CHEN Jing-Lin et al. Cryogenics and Superconductivity, 2009, 37: 24 (in Chinese)4. LONG Feng, CHEN Zhuo-Min, CHEN Fei-Yun. Chinese Journal of Low Temperature Physics, 2007, 29: 123 (in Chinese)5. YU Xiao-Yan, LI Jing-Dong, TANG Yao-Jin et al. High Voltage Apparatus, 2003, 39: 47 (in Chinese)

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LONG Feng, SHI Yi, LIU Fang and NI Zhi-Peng. Quench detection and protection system design and analysis of the 7 T superconducting magnet[J]. Chinese Physics C, 2010, 34(4): 492-495. doi: 10.1088/1674-1137/34/4/014

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Received: 2009-04-30
Revised: 2009-10-29

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沈阳化工大学材料科学与工程学院沈阳 110142

Quench detection and protection system design and analysis of the 7 T superconducting magnet

Corresponding author: LONG Feng,

Received Date: 2009-04-30
Accepted Date: 2009-10-29
Available Online: 2010-04-05

Abstract:

A NbTi 7 T superconducting magnet with a 338 mm bore system was rebuilt and the first experiment was carried out in Jan. 2009. The balancing-bridge method used for the quench detection system is analyzed and an improvement of the principle of balancing-bridge conformation is given. The inductances of the coils are calculated to estimate the proportion of the bridge arms. The appropriate parameters are selected for the balancing-bridge.