Design and Construction of Test Coils for MICE Coupling Solenoid Magnet

The superconducting coupling solenoid to be applied in the Muon Ionization Cooling Experiment (MICE) is made from copper matrix Nb-Ti conductors with inner radius of 750 mm, length of 285 mm and thickness of 102.5 mm at room temperature. The magnetic field up to 2.6 T at the magnet centerline is to...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity 2009-06, Vol.19 (3), p.1340-1343
Main Authors: Li Wang, Pan, H., Xu, F.Y., Liu, X.K., Chen, A.B., Li, L.K., Guo, X.L., Wu, H., Green, M.A., Li, D.R., Strauss, B.P.
Format: Article
Language:English
Subjects:
AC losses
Applied sciences
Charging
Coils
Construction
cool down test
Cooling
Couplings
Design. Technologies. Operation analysis. Testing
Electrical engineering. Electrical power engineering
Electromagnets
Electronics
Exact sciences and technology
Integrated circuits
Ionization
Joining
Mesons
Mice
MICE magnet
Muons
quench
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Solenoids
Stress
Studies
Superconducting coils
Superconducting magnets
Testing
Various equipment and components
Winding
winding system
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Summary:The superconducting coupling solenoid to be applied in the Muon Ionization Cooling Experiment (MICE) is made from copper matrix Nb-Ti conductors with inner radius of 750 mm, length of 285 mm and thickness of 102.5 mm at room temperature. The magnetic field up to 2.6 T at the magnet centerline is to keep the muons within the MICE RF cavities. Its self inductance is around 592 H and its magnet stored energy is about 13 MJ at a full current of 210 A for the worst operation case of the MICE channel. The stress induced inside the coil during cool down and charging is relatively high. Two test coils are to build and test in order to validate the design method and develop the fabrication technique required for the coupling coil winding, one is 350 mm inner diameter and full length same as the coupling coil, and the other is one-quarter length and 1.5 m diameter. The 1.5 m diameter coil will be charged to strain conditions that are greater than would be encountered in the coupling coil. This paper presents detailed design of the test coils as well as developed winding skills. The analyses on stress in coil assemblies, AC loss, and quench process are carried out.
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2009.2018056