Thermal Stability Analysis for Superconducting Coupling Coil in MICE

Author

Wu, H. ; Wang, L. ; Green, M.A. ; Pan, H. ; Guo, X.L.

Author_Institution

Inst. of Cryogenics & Superconductive Technol., Harbin Inst. of Technol., Harbin, China

Volume

20

Issue

3

fYear

2010

fDate

6/1/2010 12:00:00 AM

Firstpage

2190

Lastpage

2193

Abstract

The superconducting coupling coil to be used in the Muon Ionization Cooling Experiment (MICE) with inner radius of 750 mm, length of 285 mm and thickness of 110.4 mm will be cooled by a pair of 1.5 W at 4.2 K cryo-coolers. When the coupling coil is powered to 210 A, it will produce about 7.3 T peak magnetic field at the conductor and it will have a stored energy of 13 MJ. A key issue for safe operation of the coupling coil is the thermal stability of the coil during a charge and discharge. The magnet and its cooling system are designed for a rapid discharge where the magnet is to be discharged in 5400 seconds. The numerical simulation for the thermal stability of the MICE coupling coil has been done using ANSYS. The analysis results show that the superconducting coupling coil has a good stability and can be charged and discharged safely.

Keywords

accelerator magnets; cooling; cryogenics; superconducting coils; superconducting magnets; thermal analysis; thermal stability; ANSYS; MICE; Muon Ionization Cooling Experiment; cooling system; cryo-coolers; current 210 A; energy 13 MJ; magnetic flux density 7.3 T; numerical simulation; peak magnetic field; power 1.5 W; safe operation; superconducting coupling coil; superconducting magnet; temperature 4.2 K; thermal stability analysis; AC loss; HTS lead protection; thermal stability; transient temperature distribution;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2010.2041640

Filename

5433293