Active shape correction of a thin glass/plastic x-ray mirror
Date Issued
2014
Author(s)
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Dell'Agostino, Stefano
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Lullo, Giuseppe
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Pelliciari, Carlo
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Abstract
Optics for future X-ray telescopes will be characterized by very large aperture and focal length, and will be made of lightweight materials like glass or plastic in order to keep the total mass within acceptable limits. Optics based on thin slumped glass foils are currently in use in the NuSTAR telescope and are being developed at various institutes like INAF/OAB, aiming at improving the angular resolution to a few arcsec HEW. Another possibility would be the use of thin plastic foils, being developed at SAO and the Palermo University. Even if relevant progresses in the achieved angular resolution were recently made, a viable possibility to further improve the mirror figure would be the application of piezoelectric actuators onto the non-optical side of the mirrors. In fact, thin mirrors are prone to deform, so they require a careful integration to avoid deformations and even correct forming errors. This however offers the possibility to actively correct the residual deformation. Even if other groups are already at work on this idea, we are pursuing the concept of active integration of thin glass or plastic foils with piezoelectric patches, fed by voltages driven by the feedback provided by X-rays, in intra-focal setup at the XACT facility at INAF/OAPA. In this work, we show the preliminary simulations and the first steps taken in this project.
Coverage
Adaptive X-Ray Optics III
All editors
O'Dell, Stephen L.; Khounsary, Ali M.
Series
Volume
9208
Start page
92080A
Conferenece
Adaptive X-Ray Optics III
Conferenece place
San Diego, California, United States
Conferenece date
17-21 August, 2014
Issn Identifier
0277-786X
Ads BibCode
2014SPIE.9208E..0AS
Rights
open.access
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