Tin tức, Công nghệ & sản phẩm mới, Khoa học và đời sống
SWAXS Lab -Saclay : The SAXS/ GISAXS/ X-ray reflectomer beamline
- SAXS : Small Angle X-ray scattering
- WAXS : Wide angle X-ray scattering
- GISAXS : Grazing Incidence X-ray scattering
- SANS : Small Angle Neutron scattering
- GISANS : Grazing Incidence Neutron scattering
The main characteristics are:
- The generator is a GeniX3D – copper microsource source of high power density, equipped with a single reflection optics FOX3D leading to a highly collimated beam (divergence <0.4 mrad) with a large efficiency. The flux at the source is >107 MPh/s.
- The collimator is composed of two scatterless slits systems to reduce the background. The distance between slits is fixed to 1.3m.
- The beam size at the sample can be continuously varied: from 1.2 mm x 1,2 mm to 0.25*0.25mm. For a collimation 1.2mm*1.2mm / 0.8mm*0.8mm the flux is 39.6 MPh/s.
- The sample chamber can be put under vacuum or not.
- The detector is a PILATUS3 1M from Dectris of 168.7 x 179.4mm active detection dimensions with 172*172mm pixel size. Its very low background, high efficiency and high counting rate allow us to use it for absolute measurement of the scattering intensity.
- The sample to detector distance can be varied : 20cm, 80cm, 130cm and 250cm in order to achieve with optimized flux/divergence ratio a large q range from 2.2 10-3 Å-1 to 3Å-1.
- The system control for data acquisition is based on SPEC from Certified Scientific Software and compatible with TANGO the software developed to control the other X-rays instruments of the SWAXS Lab.
Source: CEA-France
