Conference proceeding
Thin-film PZT actuator performance in adjustable x-ray optic segments
Vol.12679, pp.1267915-1267915-19
10/05/2023
DOI: 10.1117/12.2675949
Abstract
Many current outstanding questions in x-ray astronomy were addressed by Lynx, an observatory concept that concluded its study phase in 2019. High-effective area, high angular resolution x-ray missions like Lynx require thin (≤ 0.5 mm thick) mirrors with precise surface figures to maintain high angular resolution (≤ 0.5 arcsec). To study methods of meeting these requirements, adjustable x-ray optics have been fabricated with thin-film piezoelectric actuators to perform figure correction. These adjustable x-ray optics serve to correct low spatial frequency figure errors ( 0.1 mm−1 ). The fabrication and actuator performance for an adjustable x-ray mirror that forms a conical approximation to a Wolter-I telescope are reported. This mirror has a BCB insulating layer with a top level of Ti traces to address its 288 actuator cells. The individual responses of cells are measured and on average they induce a figure change of 0.87 μm Peak-to-Valley (PV) with an associated Root Mean Square (RMS) of 0.10 μm. These measured cell responses are compared to predicted responses generated using a Finite-Element (FEA) analysis algorithm. On average the measured and predicted cell responses agree to within 0.06 μm RMS. The disagreement between predicted and measured cell responses is posited as being due to differences in radial constraints points between the FEA model and the as-built mirror mount.
Details
- Title: Subtitle
- Thin-film PZT actuator performance in adjustable x-ray optic segments
- Creators
- Kenneth Buffo - University of IowaCasey DeRoo - University of IowaPaul Reid - Center for Astrophysics Harvard & SmithsonianVladimir Kradinov - Center for Astrophysics Harvard & SmithsonianVanessa Marquez - Center for Astrophysics Harvard & SmithsonianSusan Trolier-McKinstry - Pennsylvania State UniversityNathan Bishop - Pennsylvania State UniversityThomas N. Jackson - Pennsylvania State UniversityQuyen Tran - Pennsylvania State UniversityHanyuan Liang - Pennsylvania State UniversityTianning Liu - Pennsylvania State UniversityMohit Tendulkar - Pennsylvania State University
- Contributors
- Stephen L. O'Dell (Editor) - NASA Marshall Space Flight Ctr. (United States)Jessica A. Gaskin (Editor) - NASA Marshall Space Flight Ctr. (United States)Giovanni Pareschi (Editor) - Brera Astronomical ObservatoryDaniele Spiga (Editor) - Brera Astronomical Observatory
- Resource Type
- Conference proceeding
- Publication Details
- Vol.12679, pp.1267915-1267915-19
- Publisher
- SPIE
- DOI
- 10.1117/12.2675949
- ISSN
- 0277-786X
- Language
- English
- Date published
- 10/05/2023
- Academic Unit
- Physics and Astronomy; University College Courses
- Record Identifier
- 9984500084902771
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