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1. 发明授权

US5336972A High brightness electron accelerator 失效
标题翻译：高亮度电子加速器
公开(公告)号：US5336972A
公开(公告)日：1994-08-09
申请号：US914327
申请日：1992-07-17
申请人： Richard L. Sheffield , Bruce E. Carlsten , Lloyd M. Young
发明人： Richard L. Sheffield , Bruce E. Carlsten , Lloyd M. Young
IPC分类号： H05H7/22 , H05H9/00
CPC分类号： H05H9/00 , H05H7/22
摘要： A compact high brightness linear accelerator is provided for use, e.g., in a free electron laser. The accelerator has a first plurality of acclerating cavities having end walls with four coupling slots for accelerating electrons to high velocities in the absence of quadrupole fields. A second plurality of cavities receives the high velocity electrons for further acceleration, where each of the second cavities has end walls with two coupling slots for acceleration in the absence of dipole fields. The accelerator also includes a first cavity with an extended length to provide for phase matching the electron beam along the accelerating cavities. A solenoid is provided about the photocathode that emits the electons, where the solenoid is configured to provide a substantially uniform magnetic field over the photocathode surface to minimize emittance of the electons as the electrons enter the first cavity.
摘要翻译：提供紧凑的高亮度线性加速器用于例如自由电子激光器。加速器具有第一组多个具有四个耦合槽的端壁的积分腔，用于在没有四极场的情况下将电子加速到高速度。第二多个空腔接收高速电子以进一步加速，其中每个第二腔具有具有两个耦合槽的端壁，用于在没有偶极场的情况下加速。加速器还包括具有延伸长度的第一腔，以提供沿着加速腔相位匹配电子束。围绕发射电极的光电阴极设置螺线管，其中螺线管构造成在光电阴极表面上提供基本均匀的磁场，以使电子进入第一腔时的电子发射最小化。

2. 发明授权

US5960013A Self-seeded injection-locked FEL amplifer 失效
标题翻译：自种注射锁定FEL放大器
公开(公告)号：US5960013A
公开(公告)日：1999-09-28
申请号：US50121
申请日：1998-03-30
申请人： Richard L. Sheffield
发明人： Richard L. Sheffield
IPC分类号： H01S3/09 , H01S3/00
CPC分类号： H01S3/0903
摘要： A self-seeded free electron laser (FEL) provides a high gain and extraction efficiency for the emitted light. An accelerator outputs a beam of electron pulses to a permanent magnet wiggler having an input end for receiving the electron pulses and an output end for outputting light and the electron pulses. An optical feedback loop collects low power light in a small signal gain regime at the output end of said wiggler and returns the low power light to the input end of the wiggler while outputting high power light in a high signal gain regime.
摘要翻译：自种子自由电子激光器（FEL）为发射光提供高增益和提取效率。加速器将一束电子脉冲输出到具有用于接收电子脉冲的输入端的永久磁铁摆动器和用于输出光和电子脉冲的输出端。光学反馈回路在所述摆动器的输出端处以小的信号增益方式收集低功率光，并将低功率光返回到摆动器的输入端，同时以高信号增益方式输出高功率光。

3. 发明授权

US4715038A Optically pulsed electron accelerator 失效
标题翻译：光学脉冲电子加速器
公开(公告)号：US4715038A
公开(公告)日：1987-12-22
申请号：US736033
申请日：1985-05-20
申请人： John S. Fraser , Richard L. Sheffield
发明人： John S. Fraser , Richard L. Sheffield
IPC分类号： H01S3/09 , H05H7/18 , H05H9/00 , H01S3/00
CPC分类号： H01S3/0903 , H05H7/18 , H05H9/00
摘要： An optically pulsed electron accelerator can be used as an injector for a free electron laser and comprises a pulsed light source, such as a laser, for providing discrete incident light pulses. A photoemissive electron source emits electron bursts having the same duration as the incident light pulses when impinged upon by same. The photoemissive electron source is located on an inside wall of a radio frequency powered accelerator cell which accelerates the electron burst emitted by the photoemissive electron source.
摘要翻译：光脉冲电子加速器可用作自由电子激光器的注射器，并且包括用于提供离散入射光脉冲的脉冲光源，例如激光器。发射电子源发射具有与入射光脉冲相同的持续时间的电子脉冲。发光电子源位于加速由发光电子源发射的电子脉冲的射频加速电解槽的内壁上。

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