TY - JOUR
T1 - Study on dipole moment in permanent magnet used in space anti-matter detector
AU - Wang, Qiuliang
AU - Song, Tao
AU - Lin, Chin E.
AU - Wang, Housheng
AU - Wang, Zheng
AU - Kong, Li
AU - Yan, Luguan
AU - Ting, Samuel C.C.
N1 - Funding Information:
Manuscript received August 28, 2007. This work was supported by NSFC and 863 high technology project. Q. Wang, T. Song, H. Wang, Z. Wang, L. Kong, L. Yan, and S. C. C. Ting are with the Key Laboratory of Applied Superconductivity, Institute of Electrical Engineering, Chinese Academy of Science, Beijing 100080, China (e-mail: [email protected]). C. E. Lin is with the Department of Aeronautics and Astronautics, National Cheng Kung University, Tainan 701, Taiwan (e-mail: [email protected]. tw). Color versions of one or more of the figures in this paper are available online at http://ieeexplore.ieee.org. Digital Object Identifier 10.1109/TASC.2008.924179
PY - 2008/6
Y1 - 2008/6
N2 - The dipole moment in the space anti-matter detector AMS01 magnet has been studied. A compensating method for the dipole moment in AMS01 was developed. The theoretical analysis and experimental test of 1/3 model magnet showed that the N47 NdFeB permanent magnetic material can compensate the dipole moment in 1000 Am3 with weight about 7 kg. A new testing method for the dipole moment of large scale AMS01 magnet is proposed. On the basis of the method, the measurement of the dipole moment in the AMS01 is about 11550 Am2 ±10%. The finite element calculation by ANSOFT is about 7300 Am 2. The difference between theory and experiment may come from the experiment environment, friction torque or the demagnetization of the magnet. It proves that the permanent magnetic block with high magnetic energy product to compensate the dipole moment is an effective method. The permanent magnetic block with magnetic energy product about 230.4 kj/m3 can compensate about 740 Am2 ±20% of dipole moment. The compensating permanent block magnet has a little effort on the central magnetic field and uniformity in the AMS01.
AB - The dipole moment in the space anti-matter detector AMS01 magnet has been studied. A compensating method for the dipole moment in AMS01 was developed. The theoretical analysis and experimental test of 1/3 model magnet showed that the N47 NdFeB permanent magnetic material can compensate the dipole moment in 1000 Am3 with weight about 7 kg. A new testing method for the dipole moment of large scale AMS01 magnet is proposed. On the basis of the method, the measurement of the dipole moment in the AMS01 is about 11550 Am2 ±10%. The finite element calculation by ANSOFT is about 7300 Am 2. The difference between theory and experiment may come from the experiment environment, friction torque or the demagnetization of the magnet. It proves that the permanent magnetic block with high magnetic energy product to compensate the dipole moment is an effective method. The permanent magnetic block with magnetic energy product about 230.4 kj/m3 can compensate about 740 Am2 ±20% of dipole moment. The compensating permanent block magnet has a little effort on the central magnetic field and uniformity in the AMS01.
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U2 - 10.1109/TASC.2008.924179
DO - 10.1109/TASC.2008.924179
M3 - Article
AN - SCOPUS:45149089119
SN - 1051-8223
VL - 18
SP - 972
EP - 975
JO - IEEE Transactions on Applied Superconductivity
JF - IEEE Transactions on Applied Superconductivity
IS - 2
M1 - 4520002
ER -