Cryogenic cooled silicon-based x-ray optical elements: heat load limit

Lin Zhang

doi:10.1117/12.163803

12 November 1993 Cryogenic cooled silicon-based x-ray optical elements: heat load limit

Lin Zhang

Proceedings Volume 1997, High Heat Flux Engineering II; (1993) https://doi.org/10.1117/12.163803
Event: SPIE's 1993 International Symposium on Optics, Imaging, and Instrumentation, 1993, San Diego, CA, United States

Abstract

A silicon block (typical size 100 X 100 X (20 - 50) mm³) cooled by liquid nitrogen has been studied with various incident power densities and spot sizes on the surface. Gaussian power distribution was assumed. Both bottom cooling and side cooling have been considered. The thermal slope error has been minimized by optimizing the cooling conditions (cooling coefficient and bulk temperature of liquid nitrogen) and the thickness of the silicon block. Finite element analysis has been used because the material properties ((alpha) , k) of silicon are highly non linear. The limits of absorbed total power and power density are estimated for both undulator and wiggler beams with various spot sizes and for the requirement in terms of thermal slope error. Correlations between thermal slope error and power, power density have been established.

Citation Download Citation

Lin Zhang "Cryogenic cooled silicon-based x-ray optical elements: heat load limit", Proc. SPIE 1997, High Heat Flux Engineering II, (12 November 1993); https://doi.org/10.1117/12.163803

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