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TY - CONF AU - Hajima, R. AU - Fujiwara, M. ED - Schaa, Volker RW ED - Petit-Jean-Genaz, Christine ED - Ko, In Soo ED - Kim, Dong Eon ED - Kim, Kyung Sook TI - Generation of GeV Photons from X-ray Free Electron Laser Oscillators J2 - Proc. of IPAC2016, Busan, Korea, May 8-13, 2016 C1 - Busan, Korea T2 - International Particle Accelerator Conference T3 - 7 LA - english AB - We propose generation of narrow-bandwidth GeV photons, gamma-rays, via Compton scattering of hard X-ray photons in X-ray free-electron laser oscillators. The gamma-rays have a narrow-bandwidth spectrum with a sharp peak, ~0.1% (FWHM), due to the nature of Compton scattering in relativistic regime. Such gamma-rays will be a unique probe for studying hadron physics. We discuss features of the gamma-ray source, flux, spectrum, polarization, tunability and energy resolution. PB - JACoW CP - Geneva, Switzerland SP - 751 EP - 753 KW - electron KW - photon KW - laser KW - FEL KW - scattering DA - 2016/06 PY - 2016 SN - 978-3-95450-147-2 DO - 10.18429/JACoW-IPAC2016-MOPOW017 UR - http://jacow.org/ipac2016/papers/mopow017.pdf ER -