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The gain and efficiency improvement of a free-electron laser by an optical klystron configuration

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3 Author(s)
Wang, M.C. ; Lab. for Plasma & Fusion Energy Studies, Maryland Univ., College Park, MD, USA ; Granatstein, V.L. ; Levush, B.

The feasibility of a high-grain amplifier in an optical klystron configuration at wavelengths of 1-2 mm was investigated using a computer simulation. A one-dimensional single-particle model for the free-electron laser (FEL) interaction was used in the numerical studies. It was found that for a three-cavity optical klystron gain of at least 30 dB and relatively high efficiency is possible for relatively modest electron-beam parameters (V⩽500 kV, J≈100 A/cm2)

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Plasma Science, IEEE Transactions on  (Volume:16 ,  Issue: 2 )