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2006-12-12 Proceedings of FEL 2006, BESSY, Berlin, Germany, TUPPH013, P.335-334 The electrodynamic properties and lasing in Volume Free Electron Laser with a ”grid” resonator (”grid” photonic crystal) with changing in space parameters are considered. The equations describing lasing of VFEL with
such a resonator are obtained. It is shown that use of diffraction gratings (photonic crystal) with variable period increases radiation intensity and provide to create the dynamical wiggler with variable period. This makes possible to develop a double-cascaded FEL with variable parameters, which efficiency can be significantly higher then that of conventional system. Download:
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