Abstract
The Adaptive Collimation System (ACS) is a closed-loop control system that can monitor and correct collimator jaw straightness deviations. Key to the operation of the ACS is a fibre-based interferometric strain measurement system mounted in the jaws that can detect straightness deviations. This system utilises spectral interferometry to interrogate multiple strain sensitive intrinsic Fabry-Perot interferometer (IFPI) cavities that can detect localised thermal and vibratory deformations within the jaw structure and allow for their correction. This paper outlines the operation of the fibre-based measurement system, construction and integration challenges, both environmental and mechanical. Finally, preliminary experimental results are described which indicate the system is sufficiently sensitive to observe a second order response from a 1.5 μm first order displacement (bend) of the jaw.
| Original language | English |
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| Title of host publication | Proceedings of the 20th International Conference of the European Society for Precision Engineering and Nanotechnology |
| Subtitle of host publication | Euspen 2020, Virtual Conference |
| Editors | Richard K. Leach, David Billington, C. Nisbet, D. Phillips |
| Publisher | euspen |
| Chapter | 5 |
| Pages | 309-312 |
| Number of pages | 4 |
| ISBN (Electronic) | 9780995775176 |
| Publication status | Published - 12 Jun 2020 |
| Event | 20th International Conference of the European Society for Precision Engineering and Nanotechnology - Virtual Conference , Geneva, Virtual, Austria Duration: 8 Jun 2020 → 12 Jun 2020 Conference number: 20 https://www.euspen.eu/events/vc-2020/ |
Conference
| Conference | 20th International Conference of the European Society for Precision Engineering and Nanotechnology |
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| Abbreviated title | ICE20 |
| Country/Territory | Austria |
| City | Geneva, Virtual |
| Period | 8/06/20 → 12/06/20 |
| Internet address |