Abstract: An electrical filter includes a dielectric substrate with inner and outer coils about a first region and inner and outer coils about a second region, a portion of cladding removed from wires that form the coils and coupled to electrically conductive traces on the dielectric substrate via a solder joint in a switching region. An apparatus to thermally couple a superconductive device to a metal carrier with a through-hole includes a first clamp and a vacuum pump. A composite magnetic shield for use at superconductive temperatures includes an inner layer with magnetic permeability of at least 50,000; and an outer layer with magnetic saturation field greater than 1.2 T, separated from the inner layer by an intermediate layer of dielectric. An apparatus to dissipate heat from a superconducting processor includes a metal carrier with a recess, a post that extends upwards from a base of the recess and a layer of adhesive on top of the post. Various cryogenic refrigeration systems are described.

Abstract: An electrical filter includes a dielectric substrate with inner and outer coils about a first region and inner and outer coils about a second region, a portion of cladding removed from wires that form the coils and coupled to electrically conductive traces on the dielectric substrate via a solder joint in a switching region. An apparatus to thermally couple a superconductive device to a metal carrier with a through-hole includes a first clamp and a vacuum pump. A composite magnetic shield for use at superconductive temperatures includes an inner layer with magnetic permeability of at least 50,000; and an outer layer with magnetic saturation field greater than 1.2 T, separated from the inner layer by an intermediate layer of dielectric. An apparatus to dissipate heat from a superconducting processor includes a metal carrier with a recess, a post that extends upwards from a base of the recess and a layer of adhesive on top of the post. Various cryogenic refrigeration systems are described.

Abstract: Disclosed is a thermosyphon system for cooling a platen in an ion implantation system. The thermosyphon system may include a vacuum chamber housing at least one wafer platen and a phase separator tank operative to contain both a liquid and gas phases of an element. A re-condensing cold head is exposed within the phase separator tank and is operative to condense the element from its gas phase to its liquid phase. This creates a convection driven closed loop pipe configuration. The closed loop pipe configuration includes a liquid phase pipe to carry the lower temperature liquid phase from the phase separator tank to the platen in the vacuum chamber. A reaction with the warmer platen converts the liquid phase to the gas phase. A gas phase pipe carries the higher temperature gas phase from the platen in the vacuum chamber back to the phase separator tank.

Abstract: Techniques for protecting a superconducting (SC) article are disclosed. The techniques may be realized as an apparatus for protecting a superconducting (SC) article. The apparatus may comprise a porous sleeve configured to fit around the superconducting (SC) article. The porous sleeve may be made of non-conductive, dielectric material.

Abstract: A current lead with a configuration to reduce heat load transfer in an alternating electrical current (AC) environment is disclosed. The current lead may comprise a conductive material having a configuration for reducing heat load transfer across the current lead when an alternating electrical current (AC) is applied to the current lead. A temperature gradient a may be exhibited along a length of the current lead.

Abstract: Systems and methods for improving the performance of dilution refrigeration systems include cryocondensation traps employed in the helium circuit of a dilution refrigerator may be modified to improve performance. A cryocondensation trap employs a cryocondensation surface having at least one temperature that preferably matches the temperature at which at least one contaminant freezes into a solid form from a gaseous form. A single trap with at least one continuous cryocondensation surface formed in a generally helical or spiral-like fashion with each region having a different temperature may be employed to trap a specific contaminant or set of contaminants. A single trap with multiple cryocondensation surfaces where each surface has a different temperature may be alternatively employed for the same purpose. To provide a temperature gradient in the cryocondensation trap, at least one region of the cryocondensation trap may be thermally coupled to a cold surface and/or a transfer tube.

Abstract: A displacer for adjusting a level of a liquid cryogen in a cryostat. The displacer including an expandable member at least partially defining a sealed chamber. The expandable member being configured to transition from a collapsed state where the sealed chamber has a smaller volume to an expanded state where the sealed chamber has a larger volume. The displacer includes a first end piece attached to a first end of the expandable member and a second end piece attached to a second end of the expandable member.

Abstract: A cryogenic cooling system includes a chamber defined by an outer wall and an inner wall, the chamber housing at least one component to be cooled; a wicking structure in thermal contact with one of the outer wall and the inner wall of the chamber; and a delivery system in a spaced apart relationship with the chamber and fluidly connected to the wicking structure for transporting a working fluid to and from the wicking structure. Also provided is a magnetic resonance imaging system including the cryogenic cooling system.

Abstract: Techniques for protecting a superconducting (SC) article are disclosed. The techniques may be realized as an apparatus for protecting a superconducting (SC) article. The apparatus may comprise a porous sleeve configured to fit around the superconducting (SC) article. The porous sleeve may be made of non-conductive, dielectric material.

Abstract: A current lead with a configuration to reduce heat load transfer in an alternating electrical current (AC) environment is disclosed. The current lead may comprise a conductive material having a configuration for reducing heat load transfer across the current lead when an alternating electrical current (AC) is applied to the current lead. A temperature gradient a may be exhibited along a length of the current lead.

Abstract: Techniques for sub-cooling in a superconducting (SC) system is disclosed. The techniques may be realized as a method and superconducting (SC) system comprising at least one insulated enclosure configured to enclose at least a first fluid or gas and a second fluid or gas, and at least one superconducting circuit within the at least one insulated enclosure. The superconducting (SC) system may be sub-cooled using at least the first fluid or gas.

Abstract: A cryogenic cooling system includes a chamber defined by an outer wall and an inner wall, the chamber housing at least one component to be cooled; a wicking structure in thermal contact with one of the outer wall and the inner wall of the chamber; and a delivery system in a spaced apart relationship with the chamber and fluidly connected to the wicking structure for transporting a working fluid to and from the wicking structure. Also provided is a magnetic resonance imaging system including the cryogenic cooling system.

Abstract: A displacer for adjusting a level of a liquid cryogen in a cryostat. The displacer including an expandable member at least partially defining a sealed chamber. The expandable member being configured to transition from a collapsed state where the sealed chamber has a smaller volume to an expanded state where the sealed chamber has a larger volume. The displacer includes a first end piece attached to a first end of the expandable member and a second end piece attached to a second end of the expandable member.