Difference: MonctonAbstract (1 vs. 2)

• A High-Brilliance Compact X-ray Source For Molecular and Medical Imaging
• David E. Moncton, Massachusetts Institute of Technology

The process of inverse Compton scattering, in which an electron of 20-50 MeV backscatters an optical photon into the hard x-ray spectral range, offers the opportunity to produce high-brilliance hard x-ray beams with a laboratory-scale facility. Using a 2-meter superconducting linac and a 1-kW laser system, the time-average brilliance of such beams will be similar to 2nd generation synchrotron facilities. Furthermore, two important characteristics will make these sources unique in comparison to both the best synchrotron sources available today and to prospective storage-ring based compact sources currently under development. First, beam size can be below 10 microns, and second, the pulse length could be as short as 100 femto-seconds. This talk will discuss the conceptual design of such a source and the scientific program it could support, including imaging and crystallography in both static and time-dependent modes. Particular emphasis will be given to protein crystallography applications, where detailed simulations of the photon production process and evaluation of the necessary optics show that highly-diffracting 10 micron crystals would provide adequate signal for fixed wavelength and MAD structure studies.