Seeded quantum FEL at 478 keV

Details Seeded quantum FEL at 478 keV Seeded quantum FEL at 478 keV

2012-01-23

arxiv.org/abs/1201.4706v1

Physics

Accelerator Physics

Scientific paper

We present for the first time the concept of a seeded {\gamma} quantum Free-Electron-Laser (QFEL) at 478 keV, which has very different properties compared to a classical. The basic concept is to produce a highly brilliant {\gamma} beam via SASE. To produce highly intense and coherent {\gamma} beam, we intend to use a seeded FEL scheme. Important for the production of such a {\gamma} beam are novel refractive {\gamma} -lenses for focusing and an efficient monochromator, allowing to generate a very intense and coherent seed beam. The energy of the {\gamma} beam is 478 keV, corresponding to a wavelength in the sub-{\AA}ngstr{\o}m regime (1/38 {\AA}). To realize a coherent {\gamma} beam at 478 keV, it is necessary to use a quantum FEL design. At such high radiation energies a classical description of the {\gamma}-FEL becomes wrong.

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