Cryogenics for the muon g-2 superconducting magnet system

✍ Scribed by Lin X. Jia; Louis J. Addessi*; James R. Cullen Jr.; Arnold J. Esper; Michael A. Green; Robert E. Meier; Chien-ih Pai; Louis P. Snydstrup; Thomas N. Tallerico

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 391 KB
• Volume: 34
• Category: Article
• ISSN: 0011-2275
• DOI: 10.1016/s0011-2275(05)80016-5

✦ Synopsis

The g-2 muon storage ring magnet system consists of four large superconducting solenoids that are up to 15.1 m in diameter [I,2]. In addition there is a 1.8 meter long actively shielded inflector dipole that is to guide the beam into the storage ring. The g-2 superconducting magnets will be cooled using forced two-phase helium in tubes that is provided from the J-T circuit of a 625 W refrigerator. The two-phase helium flows from the refrigerator J-T circuit through a heat exchanger in a storage dewar that acts as a phase separator and a buffer for helium returning from the magnets. The g-2 magnet cooling system consists of three parallel two-phase helium flow circuits that provide cooling to: the four large superconducting solenoids, the current interconnects between the solenoids with the 5300 A solenoid gas cooled electrical leads, and the inflector dipole with its 2850 A gas cooled electrical leads.