Design Developments and Innovations for the I08 SXM Beamline

Authors: Jon Kelly (Diamond Light Source)
Co-authored by industrial partner: No

Type: Conference Paper
Conference: MEDSI 2014
Peer Reviewed: No

State: Published (Approved)
Published: October 2014

Abstract: The fundamental aim of the I08 beamline project was to build a 20 nm resolution scanning X-ray microscope (SXM). The endstation was procured from the company Bruker; however to reach the optimum performance the whole beamline was optimised for high stability. The novel endstation support was designed to provide a 3 m travel with a straightness of < 50 micrometers while achieving a vibration amplitude of < 8 nm Peak-Peak integrated from 40-100 Hz. A vibration damping study was performed on the fabricated support frames, in order to minimise the torsional transmission of vibration to neighbouring optics. The best solution found being Viscoelastic constrained layer damping; which was fitted to all the beamline frames. The first beamline optic is cooled via an indium gallium eutectic bath to mechanically decouple the water circuit. This paper gives examples of vibration test data in combination with finite element analysis to refine the designs to meet the demanding specification. The beamline has demonstrated a resolution of 50 nm to date and started to take users.

Subject Areas: Technique Development

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Added On: 25/02/2015 15:41

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