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| WEPH09 |
Vibrational Stability of a Cryocooled Double Crystal Monochromator at SSRF |
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- Y. Fan, H.L. Qin
SSRF, Shanghai, People's Republic of China
- Z. L. Li, F. Tao, W. Zhu
SINAP, Shanghai, People's Republic of China
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There is an increasingly critical demand on the angular stability of double crystal monochromator (DCM). This work focuses on a method to measure angular vibration directly at the DCM crystals using a dual-frequency interferometer. This method was applied to the off-line test of a newly developed cryocooled DCM at Shanghai Syn-chrotron Radiation Facility (SSRF), which can obtain a resolution of 8 nrad. The DCM was then tested on the X-ray Test Line. Both off-line and on-line results were referenced for DCM structure optimizations. In this paper, the DCM angular stability measuring method is presented, and detailed information of the results are shown.
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| DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-MEDSI2018-WEPH09
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