Performance of a silicon monochromator under high heat load.
J Synchrotron Radiat
; 21(Pt 2): 315-24, 2014 Mar.
Article
in En
| MEDLINE
| ID: mdl-24562552
ABSTRACT
The performance of a cryogenically cooled double-crystal silicon monochromator was studied under high-heat-load conditions with total absorbed powers and power densities ranging from 8 to 780â
W and from 8 to 240â
Wâ
mm(-2), respectively. When the temperature of the first crystal is maintained close to the temperature of zero thermal expansion of silicon, the monochromator shows nearly ideal performance with a thermal slope error of 0.6â
µrad. By tuning the size of the first slit, the regime of the ideal performance can be maintained over a wide range of heat loads, i.e. from power densities of 110â
Wâ
mm(-2) (at total absorbed power of 510â
W) to 240â
Wâ
mm(-2) (at total absorbed power of 240â
W).
Full text:
1
Database:
MEDLINE
Language:
En
Year:
2014
Type:
Article