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    • 3. 发明申请
    • MAGNET STRUCTURE FOR PARTICLE ACCELERATION
    • 用于粒子加速的磁结构
    • WO2007084701A1
    • 2007-07-26
    • PCT/US2007/001506
    • 2007-01-19
    • MASSACHUSETTS INSTITUTE OF TECHNOLOGYANTAYA, Timothy, A.RADOVINSKY, Alexey, L.SCHULTZ, Joel, HenryTITUS, Peter, H.SMITH, Bradford, A.BROMBERG, Leslie
    • ANTAYA, Timothy, A.RADOVINSKY, Alexey, L.SCHULTZ, Joel, HenryTITUS, Peter, H.SMITH, Bradford, A.BROMBERG, Leslie
    • H05H13/00H05H13/02H05H7/04
    • H05H13/00H05H7/04H05H13/02Y10S505/806Y10S505/924Y10T29/49014
    • A magnet structure for particle acceleration includes at least two coils that include a continuous path of superconducting material [e.g., niobium tin (Nb3Sn) having an A15-type crystal structure] for electric current flow there through. The coils can be mounted in a bobbin, which together with the coils form a cold-mass structure. The coils are cooled to their superconducting temperatures via cryocoolers. Radial-tension members are coupled with the cold-mass structure to keep it centered, such that it remains substantially symmetrical about a central axis and is not pulled out of alignment by magnetic forces acting thereon. A wire can be wrapped around the coils, and a voltage can be applied thereto to quench the coils to prevent their operation of the coils in a partially superconducting condition, which may otherwise cause damage thereto. A magnetic yoke surrounds the cold- mass structure and includes a pair of poles that, in part, define an acceleration chamber there between. The inner surfaces of the poles have tapered profiles that establish a correct weak focusing requirement and that provide phase stability for ion acceleration and that reduce pole diameter by increasing energy gain versus radius. An integral magnetic shield is positioned about the yoke to contain magnetic fields emanating there from and can have a tortuous configuration to contain magnetic fields having a variety of orientations. The magnet structure can be very compact and can produce particularly high magnetic fields.
    • 用于粒子加速的磁体结构包括至少两个线圈,其包括用于电流流过其的超导材料[例如具有A15型晶体结构的铌锡(Nb 3 Sn)]的连续路径。 线圈可以安装在线轴中,线圈与线圈一起形成冷质结构。 线圈通过低温冷却器冷却至超导温度。 径向张力构件与冷质量结构联接以保持其居中,使得其基本上围绕中心轴线保持对称,并且不会通过作用在其上的磁力而被拉出而不对准。 线可以缠绕在线圈周围,并且可以向其施加电压以使线圈骤冷以防止线圈在部分超导状态下的操作,否则可能对线圈造成损坏。 磁轭围绕着冷质量结构,包括一对极,其一部分在其间限定加速室。 极的内表面具有锥形轮廓,其建立正确的弱聚焦要求,并且为离子加速提供相位稳定性,并且通过增加能量增益与半径来减小极直径。 整个磁屏蔽围绕磁轭定位成包含从那里发出的磁场,并且可以具有曲折构型以容纳具有各种取向的磁场。 磁体结构可以非常紧凑,并且可以产生特别高的磁场。