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@inproceedings{bean:medsi2020-tupc15,
author = {S.J. Bean and V. De Andrade and A. Deriy and K. Fezzaa and T. Graber and J. Matus and C.A. Preissner and D. Shu},
% author = {S.J. Bean and V. De Andrade and A. Deriy and K. Fezzaa and T. Graber and J. Matus and others},
% author = {S.J. Bean and others},
title = {{A New Ultra-Stable Variable Projection Microscope for the APS Upgrade of 32-ID}},
booktitle = {Proc. MEDSI'20},
pages = {211--214},
eid = {TUPC15},
language = {english},
keywords = {focusing, optics, synchrotron, photon, interface},
venue = {Chicago, IL, USA},
series = {Mechanical Engineering Design of Synchrotron Radiation Equipment and Instrumentation},
number = {11},
publisher = {JACoW Publishing, Geneva, Switzerland},
month = {10},
year = {2021},
issn = {2673-5520},
isbn = {978-3-95450-229-5},
doi = {10.18429/JACoW-MEDSI2020-TUPC15},
url = {https://jacow.org/medsi2020/papers/tupc15.pdf},
note = {https://doi.org/10.18429/JACoW-MEDSI2020-TUPC15},
abstract = {{A new nano-computed tomography projection microscope (n-CT) is being designed as part the Advanced Photon Source Upgrade (APS-U) beamline enhancement at sector 32-ID. The n-CT will take advantage of the APS-U source and provide new capabilities to the imaging program at 32-ID. A Kirkpatrick and Baez (KB) mirror-based nanofocusing optics [1,2] will be implemented in this design. To meet the n-CT imaging goals, it is the desire to have sub 10 nanometer vibrational and thermal drift stability over 10-minute measurement durations between the optic and the sample. In addition to the stability requirements, it is desired to have a variable length sample projection axis of up to 450 mm. Such stability and motion requirements are challenging to accomplish simultaneously due to performance limitations of traditional motion mechanics and present a significant engineering challenge. To overcome these limitations, the proposed n-CT design incorporates granite air bearing concepts initially used in the Velociprobe [3]. These types of granite stages have been incorporated into many designs at APS [4] and at other synchrotron facilities [5]. Utilizing the granite air bearing concept, in tandem with other design aspects in the instrument, the requirements become reachable. A novel multi-degree of freedom wedge configuration is also incorporated to overcome space limitations. The design of this instrument is described in this paper.}},
}