-
1.发明申请公开(公告)号：US20150268445A1
公开(公告)日：2015-09-24
申请号：US14662047
申请日：2015-03-18
CPC分类号： G02B7/1825 , G02B7/182
摘要： The present invention discloses a device and a method for inserting and positioning a target within a free electron laser, particle accelerator, or other such device that generates or utilizes a beam of energy or particles. The system includes a three-point registration mechanism that insures angular and translational accuracy and repeatability of positioning upon multiple insertions within the same structure.
摘要翻译： 本发明公开了一种用于在自由电子激光器，粒子加速器或其他产生或利用能量束或粒子的装置中插入和定位目标的装置和方法。 该系统包括三点对准机构，其确保在相同结构内的多次插入时的角度和平移精度以及定位的重复性。
-
公开(公告)号：US10483712B2
公开(公告)日：2019-11-19
申请号：US16292474
申请日：2019-03-05
IPC分类号： H01S3/09 , H01S3/0959 , H01S3/102
摘要： A method for varying the wavelength of a free electron laser (FEL) by applying an energy dither to the charged particles supplying the FEL. Bunches of charged particle beams are accelerated by cavities that are operated at a harmonic of the bunch repetition rate. The method involves adding one or more secondary radiofrequency accelerator cavities after the primary beam transport and near the wiggler to apply a fluctuation between individual bunches with a pseudo-random distribution. The secondary radiofrequency accelerator cavities provide fine variations of the beam energy about a nominal operating point. Operating a free electron laser (FEL) with a 1% change in the electron beam energy via the added secondary cavities will result in a 2% wavelength variation of the FEL output.
-
公开(公告)号：US09871337B2
公开(公告)日：2018-01-16
申请号：US14708259
申请日：2015-05-10
CPC分类号： H01S3/0903 , H01S3/10
摘要： A method of varying the output of a free electron laser (FEL) on very short time scales to produce a slightly broader, but smooth, time-averaged wavelength spectrum. The method includes injecting into an accelerator a sequence of bunch trains at phase offsets from crest. Accelerating the particles to full energy to result in distinct and independently controlled, by the choice of phase offset, phase-energy correlations or chirps on each bunch train. The earlier trains will be more strongly chirped, the later trains less chirped. For an energy recovered linac (ERL), the beam may be recirculated using a transport system with linear and nonlinear momentum compactions M56, which are selected to compress all three bunch trains at the FEL with higher order terms managed.
-
公开(公告)号：US10367326B2
公开(公告)日：2019-07-30
申请号：US14719380
申请日：2015-05-22
IPC分类号： H01S3/09 , H01S3/0959 , H01S3/102
摘要： A method for applying an energy dither to a charged particle beam in order to vary the wavelength of the charged particle beam. Bunches of charged particle beams are accelerated by cavities that are operated at a harmonic of the bunch repetition rate. One or more secondary radiofrequency accelerator cavities are added near the wiggler after the primary beam transport to apply a fluctuation between individual bunches with a pseudo-random distribution. The secondary radiofrequency accelerator cavities provide fine variations of the beam energy about a nominal operating point. Operating a free electron laser (FEL) with a 1% change in the electron beam energy via the secondary cavity will result in a 2% wavelength variation of the FEL output.
-
公开(公告)号：US09325145B2
公开(公告)日：2016-04-26
申请号：US14708551
申请日：2015-05-11
发明人： George Neil , Michelle D. Shinn , Joseph Gubeli
CPC分类号： H01S3/0903 , H01S3/0805 , H01S3/08068 , H01S5/0286 , H01S5/18375
摘要： A method for improving the output beam quality of a free electron laser (FEL) by reducing the amount of emission at wavelengths longer than the electron pulse length and reducing the amount of edge radiation. A mirror constructed of thermally conductive material and having an aperture therein is placed at an oblique angle with respect to the beam downstream of the bending magnet but before any sensitive use of the FEL beam. The aperture in the mirror is sized to deflect emission longer than the wavelength of the FEL output while having a minor impact on the FEL output beam. A properly sized aperture will enable the FEL radiation, which is coherent and generally at a much shorter wavelength than the bending radiations, to pass through the aperture mirror. The much higher divergence bending radiations will subsequently strike the aperture mirror and be reflected safely out of the way.
摘要翻译： 一种通过减少长于电子脉冲长度的波长的发射量并减少边缘辐射量来改善自由电子激光器（FEL）的输出光束质量的方法。 由导热材料构成并在其中具有孔径的反射镜相对于弯曲磁体下游的光束倾斜地设置，但是在对FEL光束进行任何敏感的使用之前。 反射镜中的孔径的大小可使发射长于FEL输出的波长，同时对FEL输出光束有轻微的影响。 适当尺寸的孔将能够使相干且通常比弯曲辐射短得多的波长的FEL辐射通过孔径反射镜。 较高的发散弯曲辐射将随后撞击光圈镜并被安全地反射出来。
-
公开(公告)号：US20150340834A1
公开(公告)日：2015-11-26
申请号：US14719380
申请日：2015-05-22
IPC分类号： H01S3/09 , H01S3/0959 , H01S3/102
CPC分类号： H01S3/0903 , H01S3/0959 , H01S3/102
摘要： A method for applying an energy dither to a charged particle beam in order to vary the wavelength of the charged particle beam. Bunches of charged particle beams are accelerated by cavities that are operated at a harmonic of the bunch repetition rate. One or more secondary radiofrequency accelerator cavities are added near the wiggler after the primary beam transport to apply a fluctuation between individual bunches with a pseudo-random distribution. The secondary radiofrequency accelerator cavities provide fine variations of the beam energy about a nominal operating point. Operating a free electron laser (FEL) with a 1% change in the electron beam energy via the secondary cavity will result in a 2% wavelength variation of the FEL output.
摘要翻译： 为了改变带电粒子束的波长，对带电粒子束施加能量抖动的方法。 带束粒子束的束通过以束重复率的谐波操作的空穴加速。 在主波束传输之后，在摆动器附近添加一个或多个次级射频加速器腔，以在具有伪随机分布的单个束之间施加波动。 次级射频加速器腔提供关于标称工作点的光束能量的精细变化。 通过二次腔体操作电子束能量1％变化的自由电子激光器（FEL）将导致FEL输出的2％波长变化。
-
公开(公告)号：US20190207359A1
公开(公告)日：2019-07-04
申请号：US16292474
申请日：2019-03-05
IPC分类号： H01S3/09 , H01S3/0959 , H01S3/102
CPC分类号： H01S3/0903 , H01S3/0959 , H01S3/102
摘要： A method for varying the wavelength of a free electron laser (FEL) by applying an energy dither to the charged particles supplying the FEL. Bunches of charged particle beams are accelerated by cavities that are operated at a harmonic of the bunch repetition rate. The method involves adding one or more secondary radiofrequency accelerator cavities after the primary beam transport and near the wiggler to apply a fluctuation between individual bunches with a pseudo-random distribution. The secondary radiofrequency accelerator cavities provide fine variations of the beam energy about a nominal operating point. Operating a free electron laser (FEL) with a 1% change in the electron beam energy via the added secondary cavities will result in a 2% wavelength variation of the FEL output.
-
公开(公告)号：US20150325975A1
公开(公告)日：2015-11-12
申请号：US14708259
申请日：2015-05-10
IPC分类号： H01S3/09
CPC分类号： H01S3/0903 , H01S3/10
摘要： A method of varying the output of a free electron laser (FEL) on very short time scales to produce a slightly broader, but smooth, time-averaged wavelength spectrum. The method includes injecting into an accelerator a sequence of bunch trains at phase offsets from crest. Accelerating the particles to full energy to result in distinct and independently controlled, by the choice of phase offset, phase-energy correlations or chirps on each bunch train. The earlier trains will be more strongly chirped, the later trains less chirped. For an energy recovered linac (ERL), the beam may be recirculated using a transport system with linear and nonlinear momentum compactions M56, which are selected to compress all three bunch trains at the FEL with higher order terms managed.
摘要翻译： 在非常短的时间尺度上改变自由电子激光器（FEL）的输出的方法，以产生稍宽的光滑的时间平均的波长光谱。 该方法包括在波峰相位偏移下向加速器喷射一系列束列。 通过选择每个串列上的相位偏移，相能量相关或啁啾，将粒子加速到完全能量以产生不同且独立的控制。 较早的火车将会更加啁啾，后来的火车窒息。 对于能量回收的直线加速器（ERL），梁可以使用具有线性和非线性动量压缩M56的运输系统进行再循环，该运动系统被选择以在管理的较高阶项的FEL下压缩所有三个束列。
-
公开(公告)号：US20150325974A1
公开(公告)日：2015-11-12
申请号：US14708551
申请日：2015-05-11
发明人： George Neil , Michelle D. Shinn , Joseph Gubeli
CPC分类号： H01S3/0903 , H01S3/0805 , H01S3/08068 , H01S5/0286 , H01S5/18375
摘要： A method for improving the output beam quality of a free electron laser (FEL) by reducing the amount of emission at wavelengths longer than the electron pulse length and reducing the amount of edge radiation. A mirror constructed of thermally conductive material and having an aperture therein is placed at an oblique angle with respect to the beam downstream of the bending magnet but before any sensitive use of the FEL beam. The aperture in the mirror is sized to deflect emissions longer than the electron pulse length while having a minor impact on the FEL output beam. A properly sized aperture will enable the FEL radiation, which is coherent and generally at a much shorter wavelength than the bending radiations, to pass through the aperture mirror. The much higher divergence bending radiations will subsequently strike the aperture mirror and be reflected safely out of the way.
摘要翻译： 一种通过减少长于电子脉冲长度的波长的发射量并减少边缘辐射量来改善自由电子激光器（FEL）的输出光束质量的方法。 由导热材料构成并在其中具有孔径的反射镜相对于弯曲磁体下游的光束倾斜地设置，但是在对FEL光束进行任何敏感的使用之前。 反射镜中的孔径的大小可使发射时间长于电子脉冲长度，同时对FEL输出光束产生较小的影响。 适当尺寸的孔将能够使相干且通常比弯曲辐射短得多的波长的FEL辐射通过孔径反射镜。 较高的发散弯曲辐射将随后撞击光圈镜并被安全地反射出来。
-
-
-
-
-
-
-
-
搜索结果
9 条记录 (耗时 0.013 秒)
