BL37XU (trace element analysis beamline) and BL39XU (magnetic materials beamline) at SPring-8 have been upgraded
to provide nano-probe analysis. We designed and installed Kirkpatrick-Baez (KB) mirrors and corresponding
manipulators, which have an X-ray focusing beam as small as 100 nm. To realize a high-flux 100-nm focusing beam, a
high-demagnification optical design was used, and new experimental hutches were constructed that are located about 80
m from the light source. By taking advantage of extended beamline, focusing photon flux density of over 1 x 109(photons/sec/100x100nm2) is possible with a working distance of 100 mm at X-ray energy of around 10 keV. The
current status of these beamlines is reported.
The directly water-cooled first crystal of the SPring-8 standard monochromator for bending magnet beamlines has been
developed. Thanks to the bonding technique, the performance of the new crystal has been improved without decreasing
the cooling efficiency. The finite element analyses show the deformation of the crystal by the hydraulic pressure and by
the crystal clamping is negligible small, which were dominated for the previous crystal. Both Si(111) and Si(311) crystal
were evaluated in SPring-8 beamlines, the deformation induced while the bonding process is comparable to the thermal
deformation. and long-term endurance test shows the lifetime of the O-ring becomes long because they are not on the
direct path of the SR beam. Although the overall performance is insufficient, much improvement was shown.
A one-kilometer long synchrotron radiation beamline with an x- ray undulator source was completed at SPring-8. The beamline was planned to facilitate various applications of a wide-area coherent x-ray beam, development of bi-crystal x-ray interferometers for gravitational red-shift measurement and development of highly sensitive diagnostic methods of accelerator dynamics. This paper reports the structure of the long beamline as well as some selected first results including phase contrast imaging and diffraction imaging applications.
Most SPring-8 x-ray beamlines are installed double-crystal monochromators that are standardized. For x-ray undulator beamlines where power density of the beam are quite high, rotated-inclined double-crystal geometry is usually adopted, which enlarges the footprint of the incident beam on the crystal surface to reduce the power density. On the other hand, adjustable-inclined double-crystal geometry is adopted for bending-magnet beamlines to extend the available energy range with a limited Bragg angle range. The standardized monochromator mechanism is compatible to both of the geometries, only by changing crystal mounts. Detailed description of the monochromator mechanism is presented.
The directly water-cooled silicon crystal used on the multipole wiggler beam line BL16 at the Photon Factory has extended cooling fins below the crystal block. Such extended fins are useful to reduce bowing of the crystal due to thermal distortion induced by synchrotron radiation. Experimental and calculated Si(111) and Si(333) double crystal rocking curves are compared in the present paper. Thermal deformation is calculated using a finite element analysis program ANSYS. Fairly good agreement was obtained between experiment and calculation.