The free electron laser with inverse taper
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The undulator design determines the physics of the free electron laser interaction. In the tapered undulator, the resonant electron energy decreases along the undulator length in order to enhance gain and efficiency in strong optical fields. With inverse taper, the resonant electron energy increases along the undulator length. Surprisingly, gain and efficiency are also increased in strong optical fields. In addition, the resultant electron beam energy spread is decreased compared to both the tapered and untapered undulator. A reduction of the final electron beam energy spread is useful when recirculating the beam current as in the Jefferson Lab FEL.
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Craun, Daniel E. (Monterey, California: Naval Postgraduate School, 1990-12);An undulator is a periodic magnetic field device that is an integral part of a Free Electron Laser (FEL). The key to FEL performance is the undulator design. This thesis models the undulator magnetic fields by using the ...
Winter, Gordon H. (Monterey, California. Naval Postgraduate School, 1995-06);A high current, high power X ray Free Electron Laser (FEL) using the Stanford linear accelerator (SLAC) as an electron beam source has been proposed. Such a system will provide the scientific community with its first ...
Clark, Darwin L. (Monterey, California. Naval Postgraduate School, 1992-03);The continuing development of the free electron laser (FEL) as a powerful and versatile source of coherent radiation steadily drives toward the goal of high efficiency and broad tenability at shorter wavelengths. New ...