Development Status of Adjustable Grazing Incidence Optics for 0.5 Arcsecond X-Ray Imaging

Marquez, Vanessa ; Trolier-McKinstry, Susan ; Allured, Ryan ; Vikhlinin, Alexey ; Johnson-Wilke, Raegan L. ; Reid, Paul B. ; McMuldroch, Stuart ; Zhao, Rui ; Wilke, Rudeger H. T. ; Ramsey, Brian D. ; Schwartz, Daniel A. ; O'Dell, Stephen L. ; Aldcroft, Thomas L. ; Cotroneo, Vincenzo

PID  :  NTRS Document ID: 20140016821
RP-ID  :  M15-4150

学科分类：原子、分子光学和等离子物理

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

We describe progress in the development of adjustable grazing incidence X-ray optics for 0.5 arcsec resolution cosmic X-ray imaging. To date, no optics technology is available to blend high resolution imaging like the Chandra X-ray Observatory, with square meter collecting area. Our approach to achieve these goals simultaneously is to directly deposit thin film piezoelectric actuators on the back surface of thin, lightweight Wolter-I or Wolter- Schwarschild mirror segments. The actuators are used to correct mirror figure errors due to fabrication, mounting and alignment, using calibration and a one-time figure adjustment on the ground. If necessary, it will also be possible to correct for residual gravity release and thermal effects on-orbit. In this paper we discuss our most recent results measuring influence functions of the piezoelectric actuators using a Shack-Hartmann wavefront sensor. We describe accelerated and real-time lifetime testing of the piezoelectric material, and we also discuss changes to, and recent results of, our simulations of mirror correction.