diffractometers

We have two Rigaku x-ray generators and two Huber diffractometers. We call them Huber1 and Huber2, respectively.

Huber1

Generator: Rigaku 18kW Mo rotating anode

Monochromator: Bent graphite

Photon Flux:

3.3 x 109photons/s @60kV-300mA

1.5 x 109photons/s @50kV-250mA

Spot size: ~1mm phi

This is 1/20 as intense as the bending magnet beamline of second generation synchrotron (Photon Factory). Of course the energy distribution and beam divergence of our lab source are much broader than those of synchrotron, our source provides a good photon flux. Beam characteristics is summarized in this link (written in Japanese).

Huber1

The diffractometer is controlled with SPEC, which is a world standard diffractometer controlling software.

Sample environments are controlled between 3K and 1100K.

X-ray detectors

CdTe detector (0 dimensional, high energy resolution)

XPAD (2 dimensional, 15mm x 75mm)

XPAD S70 has a detector area of 15mm x 75mm covered with 130μm x 130μm photon counting pixel detectors. We use it not only at our lab, but also at synchrotrons.

This is a home-made diffractometer.


Huber2

Generator: Rigaku MicroMax007, which is a 1.2kW rotating anode high brilliance source.

Monochrometer: Multilayer focusing optics VariMax-HF

Spot size: 0.1mm x 0.1mm, nearly parallel beam is provided.

Photon flux is ~108photons/s; the flux is 1/10 of Huber1, photon density is 10 times larger than Huber1.

The energy resolution of the multilayer mirror is as broad as 1 keV. The energy spectrum of this source is thus 1 keV broad peak together with sharp Ka1 and Ka2 characteristic X-ray.

This diffractometer is under development.