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TY - CONF AU - Kim, K.-J. AU - Blank, V.D. AU - Ding, Y. AU - Fawley, W.M. AU - Hastings, J.B. AU - Huang, Z. AU - Kolodziej, T. AU - Krzywinski, J. AU - Lindberg, R.R. AU - Marcus, G. AU - Maxwell, T.J. AU - Medvedev, N.A. AU - Qin, W. AU - Shu, D. AU - Shvyd'ko, Yu. AU - Stoupin, S. AU - Terentiev, S. AU - Zemella, J. ED - Petit-Jean-Genaz, Christine ED - Kim, Dong Eon ED - Kim, Kyung Sook ED - Ko, In Soo ED - Schaa, Volker RW TI - An Oscillator Configuration for Full Realization of Hard X-ray Free Electron Laser J2 - Proc. of IPAC2016, Busan, Korea, May 8-13, 2016 C1 - Busan, Korea T2 - International Particle Accelerator Conference T3 - 7 LA - english AB - An X-ray free electron laser can be built in an oscillator (XFELO) configuration by employing an X-ray cavity with Bragg mirrors such as diamond*. An XFELO at the 5th harmonic frequency may be implemented at the LCLS II using its 4 GeV superconducting linac. The XFELO will provide stable, coherent, high-spectral-purity hard x-rays. In addition, portions of its output may be enhanced by the LCLS amplifier for stable pulses of ultrashort duration determined by the electron bunch length. Much progress has been made recently on the feasibility of an XFELO: Analytical and numerical methods have been developed to compute the performance of a harmonic XFELO. The energy spread requirement over a sufficient length of the bunch can be met by temporal shaping of the photo-cathode drive laser**. Experiments at the APS have shown that Be-compound refractive lenses are suitable for a low-loss focusing and that the synthetic diamond crystals can withstand the intense x-ray exposure, in accord with estimates based on molecular dynamics considerations***. A strain-free mounting of thin diamond crystal (< 100 microns) can be realized by shaping a thick diamond into a blind alley****. PB - JACoW CP - Geneva, Switzerland SP - 801 EP - 804 KW - electron KW - laser KW - photon KW - optics KW - free-electron-laser DA - 2016/06 PY - 2016 SN - 978-3-95450-147-2 DO - 10.18429/JACoW-IPAC2016-MOPOW039 UR - http://jacow.org/ipac2016/papers/mopow039.pdf ER -