Cooled mirror for a double-undulator beamline

Yaming Li; Ali M. Khounsary; Jorg Maser; Sudhakar Nair

doi:10.1117/12.524908

13 January 2004 Cooled mirror for a double-undulator beamline

Yaming Li, Ali M. Khounsary, Jorg Maser, Sudhakar Nair

Proceedings Volume 5193, Advances in Mirror Technology for X-Ray, EUV Lithography, Laser, and Other Applications; (2004) https://doi.org/10.1117/12.524908
Event: Optical Science and Technology, SPIE's 48th Annual Meeting, 2003, San Diego, California, United States

Abstract

The design of a contact-cooled horizontally reflecting high-heat-load mirror for use as the first optical element on an Advanced Photon Source (APS) beamline is described. The radiation source consists of a set of two collinear undulators producing an x-ray beam with up to 340 W/mm² peak normal heat flux at the mirror located 30 m from the source. The beam incident angle is 2.6 mrad (0.15°). The mirror is 500 mm long and 75 mm wide. Specifications for this mirror are an rms tangential slope error ≤ 2 μrad and an rms roughness ≤ 2 Å. The mirror substrate is single crystal silicon. To selectively reflect photons with cut-off energies in the 7 to 33 keV range, the central part of the mirror may be coated with strips of Rh, Pt, and Be. Thermal and structural analyses of the mirror (steady state and transient) are reported. Two contact-cooling options considered are back and side cooling. The slope error of side cooling is smaller than that for back cooling. The influence of the mirror thickness and the cooling zone are analyzed. Other options to reduce the slope error are discussed.

Citation Download Citation

Yaming Li, Ali M. Khounsary, Jorg Maser, and Sudhakar Nair "Cooled mirror for a double-undulator beamline", Proc. SPIE 5193, Advances in Mirror Technology for X-Ray, EUV Lithography, Laser, and Other Applications, (13 January 2004); https://doi.org/10.1117/12.524908

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