TY - CPAPER AU - Zemella, J. AU - Fawley, W.M. AU - Lindberg, R.R. AU - Maxwell, T.J. TI - Time Dependent Study for an X-ray FEL Oscillator at LCLS-II J2 - Proc. of FEL2015 AB - The LCLS-II with its high repetition rate and high quality beam will be capable of driving an X-ray free electron laser oscillator at higher harmonics in the hard X-ray regime (0.1 nm). The oscillator consists of a low loss X-ray crystal cavity using diamond Bragg crystals with meV bandwidth. The expected average spectral flux has been estimated to be at least two orders of magnitude greater than present synchrotron-based sources with highly stable, coherent pulses of duration 1 ps or less for applications in Mössbauer spectroscopy and inelastic x-ray scattering. A more detailed study of the start up of a fifth-harmonic X-ray FEL oscillator at LCLS-II will be presented with full, time-dependent simulations. PB - JACoW CY - Geneva, Switzerland SP - 433 EP - 435 KW - cavity KW - electron KW - photon KW - undulator KW - free-electron-laser DA - 2015/12 PY - 2015 SN - 978-3-95450-134-2 DO - 10.18429/JACoW-FEL2015-TUP030 UR - http://accelconf.web.cern.ch/AccelConf/FEL2015/papers/tup030.pdf ER -