Is cold better ? - exploring the feasibility of liquid-helium-cooled optics.

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Both simulations and recent experiments conducted at the Advanced Photon Source showed that the performance of liquid-nitrogen-cooled single-silicon crystal monochromators can degrade in a very rapid nonlinear fashion as the power and for power density is increased. As a further step towards improving the performance of silicon optics, we propose cooling with liquid helium, which dramatically improves the thermal properties of silicon beyond that of liquid nitrogen and brings the performance of single silicon-crystal-based synchrotrons radiation optics up to the ultimate limit. The benefits of liquid helium cooling as well as some of the associated technical challenges will be discussed, ... continued below

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13 p.

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Assoufid, L.; Mills, D.; Macrander, A. & Tajiri, G. September 30, 1999.

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Description

Both simulations and recent experiments conducted at the Advanced Photon Source showed that the performance of liquid-nitrogen-cooled single-silicon crystal monochromators can degrade in a very rapid nonlinear fashion as the power and for power density is increased. As a further step towards improving the performance of silicon optics, we propose cooling with liquid helium, which dramatically improves the thermal properties of silicon beyond that of liquid nitrogen and brings the performance of single silicon-crystal-based synchrotrons radiation optics up to the ultimate limit. The benefits of liquid helium cooling as well as some of the associated technical challenges will be discussed, and results of thermal and structural finite elements simulations comparing the performance of silicon monochromators cooled with liquid nitrogen and helium will be given.

Physical Description

13 p.

Notes

INIS; OSTI as DE00750521

Medium: P; Size: 13 pages

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  • SPIE's Annual meeting, Denver, CO (US), 07/18/1999--07/23/1999

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  • Report No.: ANL/XFD/CP-100130
  • Grant Number: W-31-109-ENG-38
  • Office of Scientific & Technical Information Report Number: 750521
  • Archival Resource Key: ark:/67531/metadc702464

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  • September 30, 1999

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

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  • April 7, 2017, 1:15 p.m.

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Assoufid, L.; Mills, D.; Macrander, A. & Tajiri, G. Is cold better ? - exploring the feasibility of liquid-helium-cooled optics., article, September 30, 1999; Illinois. (digital.library.unt.edu/ark:/67531/metadc702464/: accessed September 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.