Diamond crystal optics for self-seeding of hard X-rays in X-ray free-electron lasers

Sequential x-ray diffraction topography at 1-BM x-ray optics testing beamline at the advanced photon source

“…Furthermore, data collected at different azimuthal rotations around the sample surface normal can be used to decompose the maps of angular peak position into maps of the lattice parameter variation and lattice misorientations (e.g., [2,3]). Since its introduction, rocking curve imaging has been used to perform detailed characterization of semiconductor single crystals such as InP, SiC, GaAs [1,3,5] and single crystal diamond [2,6,7,8]. In particular, detailed characterization of single crystal diamond X-ray optics provided by the technique has been found valuable for implementation of novel diamond X-ray optics [7,8,9].…”

Performance of a beam-multiplexing diamond crystal monochromator at the Linac Coherent Light Source

“…Recent improvements in High Pressure High-Temperature (HPHT) synthesis processes have shown promising results in improved crystal quality. [24][25][26][27][28][29] A set of diamond crystals of the (111) orientation, mounted on an all-diamond mounting frame assembly, was prepared by the Technological Institute for Superhard and Novel Carbon Materials (TISNCM, Troisk, Russia). They were characterized and optimized at the Advanced Photon Source (APS, Argonne, IL) by high resolution topography and then installed in the XPP LODCM for splitting the FEL beam.…”

“…We initially used a graphite strain free mount previously developed for the LCLS selfseeding monochromator. 29,31 Due to poor thermal contacts of this mount, a crystal temperature increase up to 100…”

Demonstration of simultaneous experiments using thin crystal multiplexing at the Linac Coherent Light Source

“…As such, the use of diamond would always be preferred, were it not for the fact that high-quality thin diamonds of sufficient size with a lattice orientation other than h100i growth direction have historically been extremely difficult to acquire. Only recently did such diamond samples become more available because of significant progress in diamond growth and polishing techniques (Blank et al, 2007;Burns et al, 2009;Shvyd'ko et al, 2010Shvyd'ko et al, , 2011Polyakov et al, 2011;Sumiya & Tamasaku, 2012;Stoupin et al, 2013).…”