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in subjects: "Spices"

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Tunable Soft X-Ray Oscillators

A concept for a tunable soft x-ray free electron laser (FEL) photon source is presented and studied numerically. The concept is based on echo-enabled harmonic generation (EEHG), wherein two modulator-chicane sections impose high harmonic structure with much greater efficacy as compared to conventional high harmonic FELs that use only one modulator-chicane section. The idea proposed here is to replace the external laser power sources in the EEHG modulators with FEL oscillators, and to combine th… more

Date: September 17, 2010

Creator: Wurtele, Jonathan; Gandhi, Punut; Gu, X-W; Fawley, William M; Reinsch, Matthia; Penn, Gregory et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Optimization of the LCLS X-Ray FEL Output Performance in the Presence of Strong Undulator Wakefields

The Linac Coherent Light Source (LCLS) Free-Electron Laser will operate in the wavelength range of 1.5 to 15 Angstroms. Energy loss due to wakefields within the long undulator can degrade the FEL process by detuning the resonant FEL frequency. The wakefields arise from the vacuum chamber wall resistivity, its surface roughness, and abrupt changes in its aperture. For LCLS parameters, the resistive component is the most critical and depends upon the chamber material (e.g. Cu) and its radius. To … more

Date: March 17, 2006

Creator: Reiche, S.; Bane, K. L. F.; Emma, P.; Huang, Z.; Nuhn, H. D.; Stupakov, G. V. et al.