TY - CPAPER AU - Turner, J.L. AU - Baxevanis, P. AU - Decker, F.-J. AU - Ding, Y. AU - Huang, Z. AU - Krzywinski, J. AU - Loos, H. AU - Marcus, G. AU - Norvell, N.P. TI - Studies of LCLS FEL Divergence J2 - Proc. of FEL2015 AB - Simulations show various impacts on x-ray divergence. With the motivation to maximize intensity at the focus, these beam studies were designed to study parameter space and beam qualities impacting divergence, and therefore aperture related clipping and diffraction. With multiple simultaneous users, beam constraints increase, requiring an improving knowledge of the mechanism of impact of changing parameters. These studies have that goal in order to improve beam control. PB - JACoW CY - Geneva, Switzerland SP - 681 EP - 684 KW - undulator KW - simulation KW - electron KW - photon KW - quadrupole DA - 2015/12 PY - 2015 SN - 978-3-95450-134-2 DO - 10.18429/JACoW-FEL2015-WEP052 UR - http://accelconf.web.cern.ch/AccelConf/FEL2015/papers/wep052.pdf ER -