Modeling of heat-bump formation in x-ray optics under SR beams

Peter Revesz; Alexander Kazimirov; James J. Savino; Christopher J. MacGahan; Emmett L. Windisch

doi:10.1117/12.826394

4 September 2009 Modeling of heat-bump formation in x-ray optics under SR beams

Peter Revesz, Alexander Kazimirov, James J. Savino, Christopher J. MacGahan, Emmett L. Windisch

Proceedings Volume 7448, Advances in X-Ray/EUV Optics and Components IV; 744805 (2009) https://doi.org/10.1117/12.826394
Event: SPIE Optical Engineering + Applications, 2009, San Diego, California, United States

Abstract

We have used a direct optical measurement of the distortion of the first silicon crystal of the CHESS A2 monochromator. The total X-ray power absorbed by the crystal was in the range of 2 to 190 Watts. The X-ray powers measured by a bolometer were in good agreement with the XOP calculations. In-situ optical measurements were used to measure the deformation of the crystal under the heat load between a 3-15° angle of incidence. Simultaneously, ANSYS modeling of the effect of the heat load on the monochromator crystal with the cooling assembly was done. The measured slope error and the surface deformation profiles were in good agreement with the ANSYS simulations. A rocking curve method was used to measure the effect of a heat load on the diffraction properties of the monochromator for a range of beam-defining slit widths. We have found a good correlation between the FWHM of the rocking curves and the slope errors from the optical measurements.

Citation Download Citation

Peter Revesz, Alexander Kazimirov, James J. Savino, Christopher J. MacGahan, and Emmett L. Windisch "Modeling of heat-bump formation in x-ray optics under SR beams", Proc. SPIE 7448, Advances in X-Ray/EUV Optics and Components IV, 744805 (4 September 2009); https://doi.org/10.1117/12.826394

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available