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Upgrade of triple-axis/four-circle diffractometer at PF-BL3A

1995; American Institute of Physics; Volume: 66; Issue: 2 Linguagem: Inglês

10.1063/1.1145854

1527-2400

Yasuo Takagi, Toshiharu Kikuchi, Toshiyuki Mizutani, Muneyuki Imafuku, Satoshi Sasaki, Takeharu Mori,

Advanced X-ray Imaging Techniques

Several new goniometers were installed on the triple-axis/four-circle diffractometer, SIN-1 at PF-BL3A to improve data acquisition ability and beam collimation. The most prominent improvement is development and installation of a new two-circle/one-linear goniometer, which was designed to mount various x-ray detectors, such as an imaging plate or a multielement solid-state detector to acquire diffraction and/or fluorescence data over a wide range of scattering angles. The new goniometer and the original four-circle goniometer have a common rotation center (i.e., the four-circle goniometer center). The new goniometer can be operated independently of the four-circle goniometer for a wide range of scattering angles. The new two-circle/one-linear goniometer consists of a tandem combination of a translation stage, η, and two-circle goniometers, κ and ξ, where these axes η, κ, and ξ correspond to polar coordinates (ρ, θ, φ), respectively. Other improvements such as development of a pair of total reflection mirrors for the collimator axis are also reported.