DLSITT1020 - Supply of a Versatile X-ray Diffractometer based on a Laboratory Source at Diamond Light Source

Description

Located on the Harwell Science and Innovation Campus in Oxfordshire, Diamond is a leading- edge facility for science, engineering and innovation. It is the largest science facility to be built in the UK for 40 years and produces ultra-violet, infra-red and X-ray beams of exceptional brightness. The scope is to deliver, install and commission a versatile x-ray system based on an x-ray source, optics, diffractometer and detector. The system will be located at a permanent fixed position on the floor of the Optics Fabrication Building Lab. 5. The instrument will be mainly dedicated for reflectivity measurements to characterise testing of multilayer optical elements for the Multilayer Deposition System. The optical elements to be tested are mirrors, thin films and multilayers. These will be either free standing or mounted on holders. Therefore, a large range of sample weights and sizes should be possible to be installed on the diffractometer. It is envisaged that the instrument will be used for measuring high resolution reflectivity. Mirror and multilayer measurements will be done at grazing incidence angle. The diffractometer will have to accommodate samples weighing up to 1 kg with dimensions up to 100mm (Length)×50mm (Width)×50 mm (Height)., appropriate stage motion to perform measurements at different positions on (to map) the sample. It is expected that the versatile x-ray diffractometer will be based on: a high intensity x-ray tube with a copper target; interchangeable, high energy and angle resolution x-ray optical modules for pre- and post-processing the x-ray beam; 4 circle diffractometer with sample stage allowing X, Y, Z translations, sample rotation and tilt adjustment perpendicular to the incident beam. The optics modules will be chosen according to required beam intensity, collimation, resolution and size.

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