The open source Bmad software library, developed at Cornell University, has proved to be a useful tool for
accelerator simulations owing to its modular, object-oriented design. Bmad has been used to simulate the storage
ring CESR for many years, and to design and analyze the proposed Cornell Energy Recovery Linac. Work is
ongoing to expand Bmad in a number of directions. In particular, the ability to be able to do a combined
simulation of accelerated charged-particle beams and the x-ray beams they create is being developed. Ultimately
a complete framework for simulations from the gun cathode (including space-charge) to x-ray generation, to
x-ray tracking through to the experimental end-stations is envisioned. The flexibility of Bmad is such that
multiple propagation algorithms can be accommodated with the user selecting the appropriate algorithm for each
individual element. To this end, the integration of Bmad with the SHADOW tracking code is in development.
Following successful experience using photolithography and high aspect ratio reactive ion etching (RIE) to produce dynamically bent x-ray sagittal focusing crystals, we report on incorporating this optic in a novel high flux, narrow bandwidth, energy scanning monochromator for bend magnet synchrotron radiation. We describe the mono, several modes of operation, and our experience using it. Deep RIE has great utility for the manufacture, in silicon, of mechanical devices with feature as small as a few microns, however aberration free Bragg diffraction focusing requires uniformity in etch depth over large areas. To improve optical performance in terms of minimum focus spot size and maximum x-ray throughput, we are developing "second generation" focusing crystals based on a composite structure concept. We describe some of this new work and suggest areas of application.
We present recent test results and discuss design challenges on x-ray optical compo-nents for the wiggler sources at CHESS and for the proposed energy recovery linac (ERL) source at Cornell. For the existing wiggler sources, a new white-beam collimating mirror has been installed and tested at F-line and some preliminary test results are pre-sented. For the proposed ERL, three types of x-ray optical components are identified and considered: (1) high-heat-load capable optics for high-power and high-power-density in-sertion-device sources, (2) brilliance preserving optics that can provide high transverse coherence, and (3) optics used to manipulate, preserve and produce short x-ray pulses.
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