  NSLS-II x-ray diagnostics will provide continuous online data of electron
beam dimensions, which will be used to derive electron beam emittance and
energy spread. It will also provide information of electron beam tilt for
coupling evaluation. X-ray diagnostics will be based on imaging of bending
magnet and three-pole wiggler synchrotron radiation sources. Diagnostics from
three-pole wiggler source will be used to derive particles energy spread. Beta
and dispersion functions will have to be evaluated for emittance and particles
energy spread calculations. Due to small vertical source sizes imaging need to
be performed in x-ray energy range. X-ray optics with high numerical aperture,
such as compound refractive lens, will be used to achieve required spatial
resolution. Optical setups with different magnifications in horizontal and
vertical directions fill be employed to deal with large aspect ratio of the
source. X-ray diagnostics setup will include x-ray imaging optics,
monochromatization, x-ray imaging and recording components.
