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Proceedings Paper

Heat-load studies the SPring-8 beamlines II: thermal problems of beamline optics
Author(s): Hitoshi Yamaoka; Xiao-Min Tong; Tomoya Uruga; Yoshiharu Sakurai
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Paper Abstract

In SPring-8 beamline for insertion devices heat load problems of the optics become serious. Efficient cooling methods must be improved to make use of the original photon characteristics. Here we indicate some simple and analytical calculations for monochromator crystal. Angle distortions due to the thermal deformation for Si crystal are indicated by using simple formulas. Critical heat flux for liquid nitrogen cooling is estimated to be a few W/mm2. The thermal conductance and the loss of head are calculated as a function of fin number in the cooling channel considering the fin efficiency. The possibility of using a diamond crystal for the undulator beamline is also discussed.

Paper Details

Date Published: 25 February 1993
PDF: 6 pages
Proc. SPIE 1739, High Heat Flux Engineering, (25 February 1993); doi: 10.1117/12.140522
Show Author Affiliations
Hitoshi Yamaoka, RIKEN--The Institute of Physical and Chemical Research (Japan)
Xiao-Min Tong, RIKEN--The Institute of Physical and Chemical Research (Japan)
Tomoya Uruga, RIKEN--The Institute of Physical and Chemical Research (Japan)
Yoshiharu Sakurai, RIKEN--The Institute of Physical and Chemical Research (Japan)


Published in SPIE Proceedings Vol. 1739:
High Heat Flux Engineering
Ali M. Khounsary, Editor(s)

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