Components for the X-ray radiometry beamline at BESSY II

被引：5
|
作者：
Krumrey, M [1 ]
Herrmann, C [1 ]
Muller, P [1 ]
Ulm, G [1 ]
机构：
[1] Phys Tech Bundesanstalt, D-10587 Berlin, Germany
来源：
JOURNAL OF SYNCHROTRON RADIATION | 1998年 / 5卷
关键词：
X-ray radiometry; mirror coatings; crystal cooling;
D O I：
10.1107/S0909049597014787
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Optical components for the X-ray radiometry beamline of the Physikalisch-Technische Bundesanstalt at BESSY II were investigated at BESSY I. Reflectometry measurements on different mirror coatings were used to calculate their capability to suppress higher-order radiation. An MgF2 coating proved to be best suited for photon energies below 4 keV. The reflectance of silicon (111) monochromator crystals at low photon energies around 2 keV was homogeneous within +/-1%. In a test at a superconducting wavelength shifter the cooling system for the first crystal was shown to cope with the absorbed power of 14 W.
引用
收藏
页码：788 / 790
页数：3
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