ACTIVE SHIELD SUPERCONDUCTING ELECTROMAGNET APPARATUS AND MAGNETIC RESONANCE IMAGING SYSTEM

• Main Authors: HIGUCHI YOSHIYA, HONDA TAKURO, ABE MITSUSHI, YAMAMOTO TSUTOMU, ANDO RYUYA
• Format: Patent
• Language: English
• Published: 12.02.2009
• Subjects: BASIC ELECTRIC ELEMENTS; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS; GENERATION; INDUCTANCES; MAGNETS; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES; TESTING; TRANSFORMERS

The active shield superconducting electromagnet apparatus includes: a main switching circuit in which first and second main coils, first and second shield coils, and a first superconducting persistent current switch are connected in series; a sub switching circuit in which a bypass circuit, in which...