Optical metrology of an adjustable x-ray mirror prototype

2021 ◽  
Author(s):  
Casey T. DeRoo ◽  
Paul B. Reid ◽  
Vanessa Marquez ◽  
Vladimir Kradinov ◽  
Susan Trolier-McKinstry ◽  
...  
Keyword(s):  
Optical Metrology ◽  
X Ray

Correlation methods in optical metrology with state-of-the-art x-ray mirrors

2018 ◽  
Author(s):  
Valeriy V. Yashchuk ◽  
Gary Centers ◽  
Gevork S. Gevorkyan ◽  
Ian Lacey ◽  
Brian V. Smith
Keyword(s):  
State Of The Art ◽  
Optical Metrology ◽  
X Ray ◽  
Correlation Methods

scholarly journals Long, elliptically bent, active X-ray mirrors with slope errors <200 nrad

2017 ◽  
Vol 24 (3) ◽  
pp. 615-621 ◽  
Author(s):  
Ioana T. Nistea ◽  
Simon G. Alcock ◽  
Paw Kristiansen ◽  
Adam Young
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Free Electron Laser ◽  
State Of The Art ◽  
Optical Metrology ◽  
Optical Surface ◽  
High Quality ◽  
Element Analysis ◽  
Bending Performance ◽  
X Ray

Actively bent X-ray mirrors are important components of many synchrotron and X-ray free-electron laser beamlines. A high-quality optical surface and good bending performance are essential to ensure that the X-ray beam is accurately focused. Two elliptically bent X-ray mirror systems from FMB Oxford were characterized in the optical metrology laboratory at Diamond Light Source. A comparison of Diamond-NOM slope profilometry and finite-element analysis is presented to investigate how the 900 mm-long mirrors sag under gravity, and how this deformation can be adequately compensated using a single, spring-loaded compensator. It is shown that two independent mechanical actuators can accurately bend the trapezoidal substrates to a range of elliptical profiles. State-of-the-art residual slope errors of <200 nrad r.m.s. are achieved over the entire elliptical bending range. High levels of bending repeatability (ΔR/R = 0.085% and 0.156% r.m.s. for the two bending directions) and stability over 24 h (ΔR/R = 0.07% r.m.s.) provide reliable beamline performance.

Optical metrology for the segmented optics on the Constellation-X spectroscopy x-ray telescope

2004 ◽  
Author(s):  
David A. Content ◽  
David Colella ◽  
Theo Hadjimichael ◽  
John P. Lehan ◽  
Joseph McMann ◽  
...  
Keyword(s):  
Optical Metrology ◽  
X Ray

scholarly journals Fast optical metrology of the hard x-ray optics for the High Energy Focusing Telescope (HEFT)

1998 ◽  
Author(s):  
Mario A. Jimenez-Garate ◽  
William W. Craig ◽  
Charles J. Hailey
Keyword(s):  
High Energy ◽  
Optical Metrology ◽  
Ray Optics ◽  
X Ray ◽  
Energy Focusing

Results of x-ray mirror round-robin metrology measurements at the APS, ESRF, and SPring-8 optical metrology laboratories

2005 ◽  
Author(s):  
Lahsen Assoufid ◽  
Amparo Rommeveaux ◽  
Haruhiko Ohashi ◽  
Kazuto Yamauchi ◽  
Hidekazu Mimura ◽  
...  
Keyword(s):  
Round Robin ◽  
Optical Metrology ◽  
X Ray

scholarly journals Ion beam figuring and optical metrology system for synchrotron x-ray mirrors

2019 ◽  
Author(s):  
Matthew Hand ◽  
Simon G. Alcock ◽  
Michael Hillman ◽  
Richard Littlewood ◽  
Simone Moriconi ◽  
...  
Keyword(s):  
Ion Beam ◽  
Optical Metrology ◽  
X Ray ◽  
Metrology System ◽  
Ion Beam Figuring

scholarly journals Efficiency and coherence preservation studies of Be refractive lenses for XFELO application

2018 ◽  
Vol 25 (2) ◽  
pp. 354-360 ◽  
Author(s):  
Tomasz Kolodziej ◽  
Stanislav Stoupin ◽  
Walan Grizolli ◽  
Jacek Krzywinski ◽  
Xianbo Shi ◽  
...  
Keyword(s):  
Free Electron ◽  
Free Electron Laser ◽  
Surface Profile ◽  
Optical Metrology ◽  
Performance Tests ◽  
Laser Oscillator ◽  
Design Specification ◽  
X Ray ◽  
Wavefront Distortion ◽  
Surface Profiles

Performance tests of parabolic beryllium refractive lenses, considered as X-ray focusing elements in the future X-ray free-electron laser oscillator (XFELO), are reported. Single and double refractive lenses were subject to X-ray tests, which included: surface profile, transmissivity measurements, imaging capabilities and wavefront distortion with grating interferometry. Optical metrology revealed that surface profiles were close to the design specification in terms of the figure and roughness. The transmissivity of the lenses is >94% at 8 keV and >98% at 14.4 and 18 keV. These values are close to the theoretical values of ideal lenses. Images of the bending-magnet source obtained with the lenses were close to the expected ones and did not show any significant distortion. Grating interferometry revealed that the possible wavefront distortions produced by surface and bulk lens imperfections were on the level of ∼λ/60 for 8 keV photons. Thus the Be lenses can be succesfully used as focusing and beam collimating elements in the XFELO.

Optical metrology for analysis of lobster-eye x-ray optics

2003 ◽  
Vol 42 (13) ◽  
pp. 2422 ◽  
Author(s):  
Thomas H. K. Irving ◽  
Andrew G. Peele ◽  
Keith A. Nugent
Keyword(s):  
Optical Metrology ◽  
Ray Optics ◽  
X Ray ◽  
Lobster Eye
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