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RIS citation export for TUOA01: Surface Twist Characterization and Compensation of an Elliptically Bent Hard X-Ray Mirror

AU  - Qiao, Z.
AU  - Anton, J.W.J.
AU  - Assoufid, L.
AU  - Kearney, S.P.
AU  - Mashrafi, S.T.
AU  - Qian, J.
AU  - Shi, X.
AU  - Shu, D.
ED  - Jaski, Yifei
ED  - Den Hartog, Patric
ED  - Jaje, Kelly
ED  - Schaa, Volker R.W.
TI  - Surface Twist Characterization and Compensation of an Elliptically Bent Hard X-Ray Mirror
J2  - Proc. of MEDSI2020, Chicago, IL, USA, 24-29 July 2021
CY  - Chicago, IL, USA
T2  - Mechanical Engineering Design of Synchrotron Radiation Equipment and Instrumentation
T3  - 11
LA  - english
AB  - Deformable optics, including mechanically-bent and bimorph mirrors, are essential optical elements for X-ray beam dynamical focusing and wavefront correction. Existing mechanical bender technology often suffers from poor repeatability and does not include twist compensation. We recently developed an elliptically bent mirror based on a laminar flexure bending mechanism that yielded promising results*,**. In this work, the mirror surface twist was characterized using a Fizeau interferometer under different bending conditions. By applying a shimming correction, the surface twist was successfully reduced from 50 urad to 1.5 urad. The twist angle variation from no bending to the maximum bending is less than 0.5 urad. Our simulation results show that these numbers are significantly lower than the required values to ensure optimum optical performance. The study demonstrates the effectiveness of the twist compensation procedures and validates the mirror bender design parameters.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 99
EP  - 102
KW  - optics
KW  - photon
KW  - simulation
KW  - focusing
DA  - 2021/10
PY  - 2021
SN  - 2673-5520
SN  - 978-3-95450-229-5
DO  - doi:10.18429/JACoW-MEDSI2020-TUOA01
UR  - https://jacow.org/medsi2020/papers/tuoa01.pdf
ER  -