公开(公告)号：US20150345837A1

公开(公告)日：2015-12-03

申请号：US14554454

申请日：2014-11-26

Applicant: Oxford Instruments Nanotechnology Tools Limited

Inventor： Chris King

IPC: F25B21/00 ,  F25D19/00 ,  F17C3/08 ,  F25D3/10

CPC classification number: F25B21/00 ,  F17C3/085 ,  F25B9/145 ,  F25B2321/002 ,  F25B2321/0021 ,  F25D3/10 ,  F25D19/006 ,  H01F6/00 ,  Y02B30/66

Abstract: Cryogenic cooling apparatus is disclosed for cooling a target region using the demagnetisation cooling effect. The apparatus has a primary magnet for providing a magnetic field within the target region and a demagnetisation magnet arranged to selectively provide conductive cooling to the target region. A primary shielding magnet substantially cancels the magnetic field from the primary magnet at least at a first position between the primary and demagnetisation magnets. A demagnetisation shielding magnet substantially cancels the magnetic field from the demagnetisation magnet at least at the first position between the primary and demagnetisation magnets. Each of the primary shielding magnet and demagnetisation shielding magnet comprises a cylindrical superconducting coil having a geometric envelope which encloses the primary magnet and demagnetisation magnet respectively. A conductive cooling assembly provides conductive cooling to each of the magnets. A cryogenic system including a cryostat, the apparatus and a refrigeration system is also provided.

Abstract translation: 公开了使用去磁冷却效果来冷却目标区域的低温冷却装置。 该装置具有用于在目标区域内提供磁场的主磁体和布置成选择性地向目标区域提供导电冷却的去磁磁体。 初级屏蔽磁体至少在初级磁铁和去磁磁体之间的第一位置基本抵消来自主磁体的磁场。 至少在初级磁铁和去磁磁体之间的第一位置处，去磁屏蔽磁体基本抵消了去磁磁体的磁场。 主屏蔽磁体和去磁屏蔽磁体中的每一个包括圆柱形超导线圈，其具有分别包围主磁体和去磁磁体的几何外形。 导电冷却组件为每个磁体提供导电冷却。 还提供了包括低温恒温器，该装置和制冷系统的低温系统。

公开(公告)号：US09927154B2

公开(公告)日：2018-03-27

申请号：US14554454

申请日：2014-11-26

Applicant: Oxford Instruments Nanotechnology Tools Limited

Inventor： Chris King

IPC: F25B9/00 ,  F25B21/00 ,  H01F1/00 ,  F25D3/10 ,  F17C3/08 ,  F25B9/14 ,  F25D19/00 ,  H01F6/00

CPC classification number: F25B21/00 ,  F17C3/085 ,  F25B9/145 ,  F25B2321/002 ,  F25B2321/0021 ,  F25D3/10 ,  F25D19/006 ,  H01F6/00 ,  Y02B30/66

Abstract: Cryogenic cooling apparatus is disclosed for cooling a target region using the demagnetization cooling effect. The apparatus has a primary magnet for providing a magnetic field within the target region and a demagnetization magnet arranged to selectively provide conductive cooling to the target region. A primary shielding magnet substantially cancels the magnetic field from the primary magnet at least at a first position between the primary and demagnetization magnets. A demagnetization shielding magnet substantially cancels the magnetic field from the demagnetization magnet at least at the first position between the primary and demagnetization magnets. Each of the primary shielding magnet and demagnetization shielding magnet comprises a cylindrical superconducting coil having a geometric envelope which encloses the primary magnet and demagnetization magnet respectively. A conductive cooling assembly provides conductive cooling to each of the magnets. A cryogenic system including a cryostat, the apparatus and a refrigeration system is also provided.