- 专利标题: AUTOMATIC CURRENT SWITCHING OF CURRENT LEADS FOR SUPERCONDUCTING MAGNETS
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申请号: US15688047申请日: 2017-08-28
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公开(公告)号: US20170356970A1公开(公告)日: 2017-12-14
- 发明人: Johannes Adrianus Overweg , Thomas Erik Amthor , Peter Forthmann , Falk Uhlemann , Bernd David
- 申请人: Koninklijke Philips N.V.
- 主分类号: G01R33/36
- IPC分类号: G01R33/36 ; H01F6/00 ; G01R33/3815 ; H01F6/06 ; G01R33/34 ; H01H36/00
摘要:
The invention provides for magnetic resonance imaging system (600) comprising a superconducting magnet (100) with a first current lead (108) and a second current lead (110) for connecting to a current ramping system (624). The magnet further comprises a vacuum vessel (104) penetrated by the first current lead and the second current lead. The magnet further comprises a magnet circuit (106) within the vacuum vessel. The magnet circuit has a first magnet circuit connection (132) and a second magnet circuit connection (134). The magnet further comprises a first switch (120) between the first magnet connection and the first current lead and a second switch (122) between the second magnet connection and the second current lead. The magnet further comprises a first current shunt (128) connected across the first switch and a second current shunt (130) connected across the second switch. The magnet further comprises a first rigid coil loop (124) operable to actuate the first switch. The first rigid coil loop forms a portion of the first electrical connection. The magnet further comprises a second rigid coil loop (126) operable to actuate the second switch. The second rigid coil loop forms a portion of the second electrical connection.