Double crystal monochromator for x-ray undulator beamline at the PF-AR

被引：4

作者：

Kawata, H ^{[1
]}

Mori, T ^{[1
]}

Adachi, H ^{[1
]}

Matsugaki, N ^{[1
]}

Koyama, A ^{[1
]}

Nomura, M ^{[1
]}

机构：

[1] KEK, Inst Mat Struct Sci, Photon Factory, Tsukuba, Ibaraki 3050801, Japan

来源：

SYNCHROTRON RADIATION INSTRUMENTATION | 2004年 / 705卷

关键词：

D O I：

10.1063/1.1757883

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The design and performance of a new double crystal monochromator for x-ray undulator beamline at the PFAR are described. The monochromator consists of flat silicon (111) crystals, which are cooled by liquid nitrogen in order to reduce the deformation caused by a heat load problem. One of the characteristic points of the monochromator is a usage of a relatively long size of second silicon crystal (similar to200mm long) along the beam direction. The long crystal makes it possible to eliminate a mechanical translation stage, which is needed to realize the fixed exit position for the monochromatized x-rays. The simplicity of the designing contributes to the stability of the monochromator, and there is no problem about vibration and so on. The fixed exit can be achieved by the adjustment of the height of the first crystal. It is possible to keep the deviation of the beam position at the experimental hatch less than 0.01 mm and 0.075 mm at vertical and horizontal directions, respectively, under scanning the monochromatized energy from 5 to 20 keV.

引用

页码：663 / 666

页数：4