| Paper | Title | Page |
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| TUPYP001 | Shining Light on Precision: Unraveling XBPMs at the Australian Synchrotron | 33 |
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| At the Australian Synchrotron (AS), the need for nondestructive X-ray beam positioning monitors (XBPM) in the beamline front ends led to the development and installation of an in-house prototype using the photoelectric effect in 2021. This prototype served as a proof of concept and an initial step towards creating a customised solution for real time X-ray position monitoring. Of the new beamlines being installed at the AS, the High-Performance Macromolecular Crystallography (MX3) and Nanoprobe beamlines require XBPMs due to their small spot size and high stability requirements. However, a significant hurdle is the short distance from the source point to the XBPM location, resulting in an extremely restricted aperture to accurately monitor the beam position. Scaling down the photoelectric prototype to accommodate the available space has proven challenging, prompting us to explore alternative designs that utilize temperature-based methods to determine the beam position. This paper details insights made from investigating this alternative method and design. | ||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-TUPYP001 | |
| About • | Received ※ 02 November 2023 — Revised ※ 03 November 2023 — Accepted ※ 09 November 2023 — Issued ※ 11 February 2024 | |
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THPPP018 |
Delta Robot 2.0: The Nano-Positioning System for the Hard X-ray Nanoprobe at the Australian Synchrotron. | |
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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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