NDLI: Lawrence Berkeley National Laboratory Lawrence Berkeley National Laboratory Title Achromatic and Isochronous Electron Beam Transport for Free Electron Lasers Permalink

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Lawrence Berkeley National Laboratory Lawrence Berkeley National Laboratory Title Achromatic and Isochronous Electron Beam Transport for Free Electron Lasers Permalink

Content Provider	Semantic Scholar
Copyright Year	2005
Abstract	We have continued the study of a suitable electron beam transport line, which is both isochronous and achromatic, for the free electron laser being designed at Lawrence Berkeley Laboratory. A refined version of the beam transport optics is discussed that accommodates two different modes of FEL wavelength tuning. For the fine tuning involving a small change of the electron beam energy, sextupoles are added to cancel the leading nonlinear dispersion. For the main nming involving the change of the undulator gap, a practical solution of maintaining the beam matching condition is presented. Calculation of the higher order aberrations is facilitated by a newly developed code. 1 . Introduction An infrared free electron laser (IRFEL) is being designed for the Chemical Dynamics Research Laboratory (CDRL) at Lawrence Berkeley Laboratory [1],[2]. Being a user facility for fundamental chemical research, the FEL (henceforth referred to as the CDRL-FEL) must meet a very tight set of performance specifications, especially on various jitters. The beam transport configuration from the accelerator to the FEL must accordingly be carefully designed to satisfy * This work was supported by the Director, Office of Energy Research, Office of Basic Energy Sciences, Materials Sciences Division, of the U.S. Department of Energy under Contract No. DE-AC03-76SF00098.
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://cloudfront.escholarship.org/dist/prd/content/qt9qp3v2v7/qt9qp3v2v7.pdf?t=lnsaga
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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