公开(公告)号：US20160172067A1

公开(公告)日：2016-06-16

申请号：US14972014

申请日：2015-12-16

Applicant: Ion Beam Applications S.A.

Inventor： Yves CLAEREBOUDT ,  Alexandre DEBATTY ,  Nicolas GERARD

IPC: G21K1/10

CPC classification number: G21K1/00 ,  A61N5/1077 ,  A61N2005/1087 ,  A61N2005/1095 ,  G21K1/10 ,  H05H7/12 ,  H05H2007/125 ,  H05H2277/11

Abstract: Disclosed embodiments include an energy degrader for attenuating the energy of a charged particle beam. The energy degrader may include a first energy attenuation member presenting a annular beam entry face and a continuous helical beam exit face, a second energy attenuation member presenting a continuous helical beam entry face and an annular beam exit face. The first and second helical surfaces may face each other. The energy degrader may also include a drive assembly configured for rotating the first and the second energy attenuation members around respectively a first axis and a second axis which are parallel to each other. The degrader may have a small moment of inertia, allowing more accurate and faster variation of the beam energy.

Abstract translation: 公开的实施例包括用于衰减带电粒子束的能量的能量降解器。 能量降解器可以包括呈现环形束入射面和连续的螺旋射束出射面的第一能量衰减构件，呈现连续的螺旋梁进入面和环形射束出射面的第二能量衰减构件。 第一和第二螺旋表面可以彼此面对。 能量降解器还可以包括驱动组件，其被配置为分别围绕彼此平行的第一轴和第二轴旋转第一和第二能量衰减构件。 降解器可能具有小的惯性矩，从而允许更准确和更快地改变光束能量。