公开(公告)号：US20140137571A1

公开(公告)日：2014-05-22

申请号：US14086697

申请日：2013-11-21

Applicant: D-Wave Systems Inc.

Inventor： Jacob Craig Petroff ,  Richard G. Harris

IPC: B01D8/00

CPC classification number: B01D8/00 ,  F25B9/10 ,  F25B9/12 ,  F25B9/145 ,  F25D19/006

Abstract: Systems and methods for improving the performance of dilution refrigeration systems are described. Filters and traps employed in the helium circuit of a dilution refrigerator may be modified to improve performance. Some traps may be designed to harness cryocondensation as opposed to cryoadsorption. A cryocondensation trap employs a cryocondensation surface having a high thermal conductivity and a high specific heat with a binding energy that preferably matches at least one contaminant but does not match helium. Multiple traps may be coupled in series in the helium circuit, with each trap designed to trap a specific contaminant or set of contaminants. Both cryocondensation and cryoadsorption may be exploited among multiple traps.

Abstract translation: 描述了用于改善稀释制冷系统性能的系统和方法。 可以修改在稀释制冷机的氦回路中使用的过滤器和捕集器，以改善性能。 一些陷阱可能被设计为利用低温冷冻而不是冷冻吸收。 低温冷凝阱采用具有高热导率和高比热的冷凝表面，其结合能优选与至少一种污染物匹配但不匹配氦。 多个陷阱可以串联耦合在氦气回路中，每个捕集阱被设计成捕获特定的污染物或一组污染物。 可以在多个陷阱中利用冷冻和低温吸收。

公开(公告)号：US20130217580A1

公开(公告)日：2013-08-22

申请号：US13707210

申请日：2012-12-06

Applicant: D-Wave Systems Inc.

Inventor： Murray C. Thom ,  Sergey Uchaykin ,  Thomas Mahon ,  David Pires ,  Peter Spear ,  Jacob Craig Petroff

IPC: H01P1/202

CPC classification number: H01P1/202

Abstract: Adaptations and improvements to tubular metal powder filters include employing non-circular cross sectional geometries, aligning the inner conductor off-axis, replacing the inner conductive wire with a conductive trace carried on a printed circuit board, combining multiple filters within a single common outer conductive housing, and employing meandering and other non-parallel signal paths. The various adaptations and improvements are designed to accommodate single-ended and differential signaling, as well as superconducting and non-superconducting applications.

Abstract translation: 对管状金属粉末过滤器的适应和改进包括采用非圆形横截面几何形状，将内部导体对准轴线，将导电线替换为承载在印刷电路板上的导电迹线，将多个过滤器组合在单个共同外部导电 住房和采用曲折和其他非平行信号路径。 各种适应和改进旨在适应单端和差分信号，以及超导和非超导应用。

公开(公告)号：US20200054961A1

公开(公告)日：2020-02-20

申请号：US16663723

申请日：2019-10-25

Applicant: D-WAVE SYSTEMS INC.

Inventor： Jacob Craig Petroff ,  Richard G. Harris

IPC: B01D8/00 ,  F25B9/10 ,  F25D19/00 ,  F25B9/12 ,  F25B9/14

Abstract: Systems and methods for improving the performance of dilution refrigeration systems are described. Filters and traps employed in the helium circuit of a dilution refrigerator may be modified to improve performance. Some traps may be designed to harness cryocondensation as opposed to cryoadsorption. A cryocondensation trap employs a cryocondensation surface having a high thermal conductivity and a high specific heat with a binding energy that preferably matches at least one contaminant but does not match helium. Multiple traps may be coupled in series in the helium circuit, with each trap designed to trap a specific contaminant or set of contaminants. Both cryocondensation and cryoadsorption may be exploited among multiple traps.

公开(公告)号：US20140326001A1

公开(公告)日：2014-11-06

申请号：US14284138

申请日：2014-05-21

Applicant: D-Wave Systems Inc.

Inventor： Gregory Citver ,  Jacob Craig Petroff ,  Sasha Vikram Gunn ,  Edmond Ho Yin Kan

IPC: B01D8/00

CPC classification number: B01D8/00

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 translation: 用于改善稀释制冷系统的性能的系统和方法包括稀释冷冻机的氦回路中使用的冷冻凝结阱可以被改变以提高性能。 低温冷凝阱采用具有至少一个温度的低温冷凝表面，该温度优选地与至少一种污染物从气态形式冻结成固体形式的温度相匹配。 具有至少一个以每个区域具有不同温度形成的大致螺旋状或螺旋状的连续冷凝表面的单个阱可用于捕获特定的污染物或一组污染物。 为了相同的目的，可以替代地使用具有多个冷凝表面的单个阱，其中每个表面具有不同的温度。 为了在冷冻阱中提供温度梯度，低温冷凝阱的至少一个区域可热耦合到冷表面和/或转移管。

公开(公告)号：US08670809B2

公开(公告)日：2014-03-11

申请号：US13707210

申请日：2012-12-06

Applicant: D-Wave Systems Inc.

Inventor： Murray C. Thom ,  Sergey Uchaykin ,  Thomas Mahon ,  David Pires ,  Peter Spear ,  Jacob Craig Petroff

IPC: H01L39/24

CPC classification number: H01P1/202

Abstract: Adaptations and improvements to tubular metal powder filters include employing cross sectional geometries of any suitable shape, aligning the inner conductor off-axis, replacing the inner conductive wire with a conductive trace or a superconductive trace carried by a printed circuit board, combining multiple filters within a single common outer conductive housing, and employing meandering and other non-parallel signal paths. The various adaptations and improvements are designed to accommodate single-ended and differential signaling, as well as superconducting and non-superconducting applications.

Abstract translation: 管状金属粉末过滤器的适应和改进包括采用任何合适形状的横截面几何形状，将内部导体对准轴线，用导电迹线或由印刷电路板承载的超导迹线替换内部导线，将多个滤波器组合在一起 单个公共外部导电外壳，并采用曲折和其他非平行信号路径。 各种适应和改进旨在适应单端和差分信号，以及超导和非超导应用。