Results From the Testing of the AMS Space Superconducting Magnet

The Alpha Magnetic Spectrometer (AMS) is a particle detector designed to search for anti-matter, dark matter and the origin of cosmic rays in space. A superconducting magnet has been developed to generate 0.78 T field at the center. The magnet system consists of a pair of large "dipole" co...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity 2012-06, Vol.22 (3), p.4500204-4500204
Main Authors: Musenich, R., Becker, R., Bollweg, K., Burger, J., Capell, M., Datskov, V. I., Gallilee, M. A., Gargiulo, C., Kounine, A., Koutsenko, V., Lebedev, A., McInturff, A., Schinzel, D., Siemko, A., Stiff, Kerry John, Zeigler, J.
Format: Article
Language:English
Subjects:
Alpha Magnetic Spectrometer
Aluminum
Applied sciences
Coils
Cosmic rays
Detectors
Electrical engineering. Electrical power engineering
Electromagnets
Exact sciences and technology
Helium
Magnetic flux
Magnetic separation
Magnetism
Permanent magnets
Refrigerators
Searching
Space technology
spectrometer
Spectrometers
Stars & galaxies
Superconducting magnets
Temperature sensors
Toroidal magnetic fields
Various equipment and components
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Summary:The Alpha Magnetic Spectrometer (AMS) is a particle detector designed to search for anti-matter, dark matter and the origin of cosmic rays in space. A superconducting magnet has been developed to generate 0.78 T field at the center. The magnet system consists of a pair of large "dipole" coils together with two series of six racetrack coils, arranged circumferentially in order to minimize the stray field. The coils, series connected, are wound with an aluminum-stabilized mono-strand NbTi conductor and are cooled by a superfluid helium circuit. The superconducting magnet was successfully tested up to the operating current of 410 A, however the decision was taken to equip the spectrometer with a NdFeB permanent magnet in order to maximize the experiment life. The paper describes the results of the superconducting magnet tests and in particular analyses an anomalous increasing of the coil temperature during magnet charging.
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2011.2176450