Theoretical prediction of flat circular-channel MCP performance for focusing X-rays

被引：0
作者：
Changchun Institute of Optics Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun [1 ]
Jilin
130033, China
不详 [2 ]
100049, China
机构：
[1] Changchun Institute of Optics Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033, Jilin
[2] University of Chinese Academy of Sciences, Beijing
来源：
Guangxue Xuebao | / 9卷
关键词：
Micro channel plates; Relative gain; TracePro simulation; X-ray optics;
D O I：
10.3788/AOS201535.0934002
中图分类号：
学科分类号：
摘要：
Micro channel plate (MCP) used in X-ray focusing and imaging has such advantages as larger field of view, lower weight, and lower sensitivity to device alignment. Based on the X-ray total reflection theory, the focusing properties of flat circular-channel capillary arrays are discussed, and the theoretical calculation of the relative gain and point spread function (PSF) on focal plane against the parameters of MCP is presented. The calculated results are verified via TracePro software, through which the focusing performance of MCP with 25 μm circular-channel diameter is simulated. Both of the model calculation and the simulation suggest that the relative gain of the MCP is nearly proportional to the source distancels, while independent on the maximum aperture of the MCP. When the source distance is110mm, the relative gain can reach about18.Furthermore, the performance of MCP with misalignment of off-axis and tilt is discussed, which suggests that the off-axis of MCP barely influence the focal spot while the tilts influence the location and shape of the spot. �, 2015, Chinese Optical Society. All right reserved.
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页数：9
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