Patent classifications
H01F6/006
Systems and methods for ramping down magnetic resonance magnet
A magnetic resonance system may include a magnetic resonance magnet and a storage container configured to accommodate the magnetic resonance magnet. The storage container may also contain an endothermic liquid. The magnetic resonance system may further include a ramping-down device configured to trigger releasing electric energy by the magnetic resonance magnet. The first ramping-down device may include an electric energy consumption device configured to consume at least a portion of the released electric energy by the magnetic resonance magnet.
DUAL WINDING SUPERCONDUCTING MAGNETIC ENERGY STORAGE
A superconducting magnetic energy storage system (SMES). The SMES includes a toroidally wound super conducting magnet having a toroidal magnetic core with a charging winding and a discharging winding. The charging winding and discharging winding are wound on the toroidal magnetic core. The SMES also includes a DC power source, the DC power source operable to provide DC current to the charging winding of the toroidally wound superconducting magnet, and a modulator operably connected to the DC power source and the charging winding, the modulator operable to modulate at least a portion of the DC current applied to the charging winding of the superconducting magnet. The energy is stored in a magnetic field of the superconducting magnet by applying a current to the charging winding of the superconducting magnet, and energy is withdrawn from the magnetic field by a current flowing in the discharging winding.
Persistent current switch and superconducting coil
Provided is a high-performance persistent current switch that is provided with a superconducting coil in which a decrease of a critical current or a critical magnetic field is suppressed. A means for solving the problem is as follows. A persistent current switch provided with a superconducting coil in a switch unit. A superconducting coil 5 includes a winding portion 53 which is formed using a superconductor thin film formed on an outer circumferential face of a base member 50. The winding portion 53 includes a first winding portion 51 and a second winding portion 52 which are formed in a double helical shape to be parallel to each other. A terminating end portion 51b of the first winding portion 51 and a starting end portion 52a of the second winding portion 52, which are adjacent to each other, are connected to each other.
SUPERCONDUCTING COIL DEVICE AND METHOD FOR PRODUCING SAME
A superconducting coil device (10) includes: a coil case (20) housing a superconducting coil (30); a superconducting coil (30) housed in the coil case (20); and a resin part (50) formed of a polymer (51) filled in a gap between an inner wall of the coil case (20) and the superconducting coil (30). The resin part (50) is formed of a polymer (51) obtained by polymerizing a polymerizable composition containing a first monomer having a norbornene ring structure.
Fault tolerant superconducting magnetic energy storage (SMES) device
A superconducting magnetic energy storage (SMES) device having a plurality of interwoven windings provides for alternative discharge paths for energy stored as magnetic fields in the windings in response to an open-circuit winding fault in one of the windings.
LEVITATION SYSTEM AND METHOD OF USING THE SAME
A levitation system includes a platform including a superconductor material; a hydrogen generator mounted on a first surface of the platform; an optical interface system mounted on at least a second surface of the platform, the optical interface system includes at least one light source configured to emit light having a predetermined wavelength; and a plurality of magnetized light reflectors configured to transmit magnetized light by reflecting the emitted light from the at least one light source; an electricity generator electrically coupled to at least one battery, the at least one battery configured to provide power to the optical interface system; and a controller comprising a memory and a processor, the controller configured to control the hydrogen generator, the optical interface system, and the electricity generator to cause the optical interface system to generate a magnetic field associated with the emitted light to repel a magnetic field of the superconductor material. Magnetized light transmitted by the plurality of magnetized light reflectors is useable for generating a magnetic field around the platform.
POWER MANAGEMENT FOR CRYOGEN COMPRESSORS
In a superconducting magnet arrangement, such as used in a magnetic resonance system, and a power management method therefor, an enhanced economic power mode (EPM) is implemented wherein the compressor operation is controlled by magnet pressure, temperature and time, so as to ensure the readiness of the magnet system for a scanning operation upon exiting the enhanced EPM. A processor implementing the enhanced EPM looks for a signal that indicates that the magnet system is operational and, in the absence of that signal for a predetermined period of time, enters into EPM. Exit from EPM occurs if certain conditions are violated, but then re-entry into EPM is attempted (re-starting EPM), thereby making the magnet system ready for operation again, if and when a patient scan is to be implemented.
MAGNETIC RESONANCE APPARATUS WITH A COOLING DEVICE, AND METHOD FOR PRODUCING SUCH A MAGNETIC RESONANCE APPARATUS
A magnetic resonance (MR) apparatus has an MR scanner with a basic field magnet formed by a superconducting coil so as to generate a basic magnetic field, a ramp device for ramping down and/or ramping up the basic field magnet, with a ramp component arranged on the MR scanner emitting heat in the ramp-up process and/or a ramp-down process, and a cooling device and at least one electronic unit to be cooled. The cooling device has a cooling plate that, with respect to the MR scanner, is in outward heat-conducting contact with the ramp component. Outwardly adjoining the cooling plate in heat-conducting contact is a carrier plate, which carries at least one electronic unit in heat-conducting contact.
RAPID DUMP OF NON-INSULATED AND PARTIALLY INSULATED SUPERCONDUCTING MAGNETS
A method of quenching a non-insulated or partially insulated high-temperature superconductor (HTS) magnet. A first current is provided to the HTS magnet to operate the HTS magnet. The magnet is quenched by either of: applying a second current to the HTS magnet, the second current in the opposite direction to the first current; or applying a second current to the HTS magnet, the second current in the same direction as the first current and less than the first current. Also provided are an HTS magnet system and a further method of quenching an HTS magnet using an AC current.
ELECTROMAGNET ASSEMBLY
An electromagnet assembly has an inner magnet, an outer magnet, arranged around the inner magnet with an annular region extending between the inner magnet and the outer magnet, and a number of support elements extending through the annular region and dividing the annular region into a number of annular segments. The support elements are distributed in the annular region so as to form a small annular segment and a large annular segment.