Author: Kelly, J.H.
Paper Title Page
WEOAM03 Magnetic Levitation on a Budget: A Student Discount 125
 
  • J.H. Kelly, D. Crivelli, S. Farrelly, M.L. Hurlstone
    DLS, Oxfordshire, United Kingdom
 
  The successful mechatronics development i.e. modelling, simulation, design, build and test of a magnetic levitation stage at the Diamond Light Source is presented. The concept was to use a low control Bandwidth across the 6 degree of freedom MIMO system, to provide both an alignment stage and vibration isolation. The project simultaneously upskilled staff and developed a proof-of-concept system demonstrator at a low cost. The final motion stage was constructed for a component cost of less than £15,000.  
slides icon Slides WEOAM03 [6.344 MB]  
DOI • reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-WEOAM03  
About • Received ※ 31 October 2023 — Revised ※ 04 November 2023 — Accepted ※ 09 November 2023 — Issued ※ 11 November 2023
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WEPPP041 The Joy of Vibration Mitigation 212
 
  • J.H. Kelly, S.G. Alcock, S.A. Beamish, D. Crivelli
    DLS, Oxfordshire, United Kingdom
 
  The decision was made to build a new Optics Metrology Lab at the Diamond Light Source in a location with 100 times higher floor velocity in the range 50-150Hz than the original location. This paper describes the successful engineering developments to mitigate this. The raft of measures included ‘skyhook¿ damping i.e. active damping using geophone velocity feedback, novel 2 stage passive vibration isolation and fundamental research into acoustic coupling of air conditioning noise. The new systems have been installed, the final performance tested and the optics scientists have been able to continue their sensitive measurements.  
poster icon Poster WEPPP041 [1.826 MB]  
DOI • reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-WEPPP041  
About • Received ※ 31 October 2023 — Revised ※ 05 November 2023 — Accepted ※ 08 November 2023 — Issued ※ 25 March 2024
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THPPP018
Delta Robot 2.0: The Nano-Positioning System for the Hard X-ray Nanoprobe at the Australian Synchrotron.  
 
  • M. Semeraro, N. Afshar, C.M. Kewish, J. McKinlay, C. Morey, M.D. de Jonge
    AS - ANSTO, Clayton, Australia
  • J.H. Kelly
    DLS, Oxfordshire, United Kingdom
 
  A nano-positioning system for the Nanoprobe beamline at the ANSTO Australian Synchrotron has been designed in collaboration with Diamond Light Source (DLS). Based on the DLS I14 delta robot [1], this design extends the bandwidth and uses an interferometer arrangement that reduces Abbe errors to improve positioning stability at high scan rate. Voice coil actuators and advanced control algorithms target precise and stable scanning with 3¿mm range in XYZ with 10 nm-rms stability; a significant challenge that was used to upskill in mechatronics engineering across our facility and improve design collaboration between mechanical and controls engineering groups. In addition to scanning, 360° rotation and 50¿mm focusing, and automated sample exchange are supported. The design, fabrication, and construction of the system is discussed, with preliminary results demonstrating its performance in terms of positioning accuracy, stability, and repeatability. This work represents an advance in the development of nanoprobe positioning systems for X-ray microscopy, with promising outlook for a range of scientific and engineering applications.
[1] J. Kelly, et al. Rev. Sci. Instrum. 92(4), 043712 (2022)
 
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