TY - JOUR
T1 - Design of an elliptically bent refocus mirror for the MERLIN beamline at the advanced light source
AU - Kelez, Nicholas
AU - Chuang, Yi De
AU - Smith-Baumann, Alexis
AU - Franck, Keith
AU - Duarte, R.
AU - Lanzara, A.
AU - Hasan, M. Z.
AU - Dessau, D. S.
AU - Chiang, T. C.
AU - Shen, Z. X.
AU - Hussain, Zahid
N1 - Funding Information:
The Advanced Light Source is operated by the Office of Basic Energy Sciences (BES), U.S. Department of Energy (DOE) with contract no. DE-AC03-76SF00098 at LBNL.
PY - 2007/11/11
Y1 - 2007/11/11
N2 - There is an increasing demand for well-focused beam with high quality imaging of the full field to further explore the potential of novel instruments. For beamlines operating at focal point, mechanical benders have often been used to shape the refocusing mirror into an ideal elliptical cylinder. Unfortunately, the limited number of couplings for these mechanisms requires specific substrate side-shaping, often calculated using beam bending theory [J.H. Underwood, Space Sci. Instrum. 3 (1977) 259; M. Howells et al., Opt. Eng. 39 (2000) 2748; T. Warwick et al., Document available at OSTI website: http://www.osti.gov/energycitations/servlets/purl/842557-JYZCS3/native/], to meet demanding figure requirements. Here, we use finite element analysis (FEA) to validate the side-shaping algorithm and then couple the output with SHADOW to evaluate mirror performance when an ideal ellipse is not achieved.
AB - There is an increasing demand for well-focused beam with high quality imaging of the full field to further explore the potential of novel instruments. For beamlines operating at focal point, mechanical benders have often been used to shape the refocusing mirror into an ideal elliptical cylinder. Unfortunately, the limited number of couplings for these mechanisms requires specific substrate side-shaping, often calculated using beam bending theory [J.H. Underwood, Space Sci. Instrum. 3 (1977) 259; M. Howells et al., Opt. Eng. 39 (2000) 2748; T. Warwick et al., Document available at OSTI website: http://www.osti.gov/energycitations/servlets/purl/842557-JYZCS3/native/], to meet demanding figure requirements. Here, we use finite element analysis (FEA) to validate the side-shaping algorithm and then couple the output with SHADOW to evaluate mirror performance when an ideal ellipse is not achieved.
KW - Finite element analysis
KW - Mirror width
KW - SHADOW
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U2 - 10.1016/j.nima.2007.08.092
DO - 10.1016/j.nima.2007.08.092
M3 - Article
AN - SCOPUS:35348895575
SN - 0168-9002
VL - 582
SP - 135
EP - 137
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
IS - 1
ER -