Development of the Soft X-ray AGM–AGS RIXS beamline at the Taiwan Photon Source

Singh, A.; Huang, H.Y.; Chu, Y.Y.; Hua, C.Y.; Lin, S.W.; Fung, H.S.; Shiu, H.W.; Chang, J.; Li, J.H.; Okamoto, J.; Chiu, C.C.; Chang, C.H.; Wu, W.B.; Perng, S.Y.; Chung, S.C.; Kao, K.Y.; Yeh, S.C.; Chao, H.Y.; Chen, J.H.; Huang, D.J.; Chen, C.T.

doi:10.1107/S1600577521002897

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Figure 7
Slope measurements of an active grating with an in-position LTP. (a) The measured grating slope and its target polynomial slope function y_t′(x) = c₁x + 2c₂x + 3c₃x² + 4c₄x³, in which c₁ = 1.95 × 10⁻⁵, c₂ = 9.08 × 10⁻⁶, c₃ = −3.85 × 10⁻⁹ and c₄ = 5.94 × 10⁻¹⁴. The function y_t′(x) is vertically offset for clarity. (b) The difference between the measured and target slope functions. The r.m.s. of this difference is 0.23 µrad. (c) The profile function of the grating surface obtained from the integration of the measured slope, with the height at the grating centre defined as zero.

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ISSN: 1600-5775

Volume 28| Part 3| May 2021| Pages 977-986

https://doi.org/10.1107/S1600577521002897

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