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Development of a multi-lane X-ray mirror providing variable beam sizes

DOI: 10.1063/1.4950732 DOI Help

Authors: David Laundy (Diamond Light Source) , Kawal Sawhney (Diamond Light Source) , Ioana Nistea (Diamond Light Source) , Simon Alcock (Diamond Light Source) , Ian Pape (Diamond Light Source) , John Sutter (Diamond Light Source) , Lucia Alianelli (Diamond Light Source) , Gwyndaf Evans (Diamond Light Source)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Review Of Scientific Instruments , VOL 87

State: Published (Approved)
Published: May 2016

Open Access Open Access

Abstract: Grazing incidence mirrors are used on most X-ray synchrotron beamlines to focus, collimate or suppress harmonics. Increasingly beamline users are demanding variable beam shapes and sizes at the sample position. We have now developed a new concept to rapidly vary the beam size and shape of a focused X-ray beam. The surface of an elliptically figured mirror is divided into a number of laterally separated lanes, each of which is given an additional longitudinal height profile calculated to shape the X-ray beam to a top-hat profile in the focal plane. We have now fabricated two prototype mirrors and present the results of metrology tests and measurements made with one of the mirrors focusing the X-rays on a synchrotron beamline. We envisage that such mirrors could be widely applied to rapid beam-size switching on many synchrotron beamlines.

Subject Areas: Physics

Instruments: B16-Test Beamline

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