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公开(公告)号：US20160247591A1
公开(公告)日：2016-08-25
申请号：US15051792
申请日：2016-02-24
Applicant: Massachusetts Institute Of Technology
Inventor： Leslie Bromberg , Philip C. Michael
CPC classification number: G21K1/093 , A61N5/1077 , A61N2005/1087 , A61N2005/1092
Abstract: Toroidal superconducting magnets can be used as lightweight rotating bending magnets in hadron therapy gantries. The toroidal bending magnets are self-shielded and do not require ferromagnetic material for field modification or shielding, decreasing both the magnet system weight, as well as overall gantry weight. Achromatic magnet can be made by combining two of these bending magnets. The simple geometry may allow the use of higher fields, making it attractive for carbon, as well as proton.
Abstract translation: 环形超导磁体可用作强子处理龙门架中的轻型旋转弯曲磁体。 环形弯曲磁体是自屏蔽的，不需要铁磁材料进行现场修改或屏蔽，从而降低磁体系统重量以及整体龙门架重量。 消色差磁体可以通过组合这两个弯曲磁体制成。 简单的几何可以允许使用更高的场，使其对于碳以及质子具有吸引力。
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公开(公告)号：US09711254B2
公开(公告)日：2017-07-18
申请号：US15051792
申请日：2016-02-24
Applicant: Massachusetts Institute Of Technology
Inventor： Leslie Bromberg , Philip C. Michael
CPC classification number: G21K1/093 , A61N5/1077 , A61N2005/1087 , A61N2005/1092
Abstract: Toroidal superconducting magnets can be used as lightweight rotating bending magnets in hadron therapy gantries. The toroidal bending magnets are self-shielded and do not require ferromagnetic material for field modification or shielding, decreasing both the magnet system weight, as well as overall gantry weight. Achromatic magnet can be made by combining two of these bending magnets. The simple geometry may allow the use of higher fields, making it attractive for carbon, as well as proton.
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公开(公告)号：US09603235B2
公开(公告)日：2017-03-21
申请号：US13949459
申请日：2013-07-24
Applicant: Massachusetts Institute of Technology
Inventor： Leslie Bromberg , Joseph V. Minervini , Alexey L. Radovinsky , Philip C. Michael
CPC classification number: H05H13/02 , H05H7/02 , H05H7/10 , H05H13/005 , H05H2007/025
Abstract: The invention specifies the use of feedback in the radio frequency (RF) drive for a synchrocyclotron, controlling the phase and/or amplitude of the accelerating field as a means to assure optimal acceleration of the beam, to increase the average beam current and to alter the beam orbit in order to allow appropriate extraction as the beam energy is varied. The effect of space charge is reduced by rapid acceleration and extraction of the beam, and the repetition rate of the pulses can be increased. Several means are presented to monitor the phase of the beam in synchrocyclotrons and to adjust the phase and amplitude of the RF to optimize the acceleration of the beam and to adjust the extraction and injection of the beam. Also, the use of a pulsed ion source that matches the acceptance window of the synchrocyclotron is described.
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