The Helium Cooling System and Cold Mass Support System for the MICE Coupling Solenoid

• Published in: IEEE transactions on applied superconductivity Vol. 18; no. 2; pp. 941 - 944
• Main Authors: Wang, L., Wu, H., Li, L.K., Green, M.A., Liu, C.S., Li, S.Y., Liu, X.K., Jia, L.X., Virostek, S.P.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: New York, NY IEEE 01.06.2008; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Accelerator RF systems; Applied sciences; Coiling; Cooling; Couplings; Design. Technologies. Operation analysis. Testing; Electrical engineering. Electrical power engineering; Electromagnets; Electronics; Exact sciences and technology; Helium; Integrated circuits; Joining; Magnetic devices; Magnetic fields; Mesons; Mice; Modules; Radio frequencies; Radio frequency; Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices; Solenoids; Superconducting coils; superconducting magnet; Superconducting magnets; Support systems; Various equipment and components; Absorbent material; Cooling; Thermal management (packaging); Magnet; Updating; Accelerator RF systems; Radiofrequency; Nuclear magnetic resonance imaging; Superconducting magnet; Cooler; Solenoid; magnetic devices; Cavity; Cooling system; Magnetic field; Magnetic device
• ISSN: 1051-8223; 1558-2515
• DOI: 10.1109/TASC.2008.921252

The MICE cooling channel consists of alternating three absorber focus coil module (AFC) and two RF coupling coil module (RFCC) where the process of muon cooling and reacceleration occurs. The RFCC module comprises a superconducting coupling solenoid mounted around four conventional conducting 201.25 MHz closed RF cavities and producing up to 2.2 T magnetic field on the centerline. The coupling coil magnetic field is to produce a low muon beam beta function in order to keep the beam within the RF cavities. The magnet is to be built using commercial niobium titanium MRI conductors and cooled by pulse tube coolers that produce 1.5 W of cooling capacity at 4.2 K each. A self-centering support system is applied for the coupling magnet cold mass support, which is designed to carry a longitudinal force up to 500 kN. This report will describe the updated design for the MICE coupling magnet. The cold mass support system and helium cooling system are discussed in detail.