Progress in differential deposition for improving the figures of full-shell astronomical grazing incidence x-ray optics

Kiranmayee Kilaru; Carolyn Atkins; Brian D. Ramsey; Jeffery K. Kolodziejczak; Tomasz M. Lis; Mikhail V. Gubarev; Stephen L. O'Dell; Jessica A. Gaskin; David M. Broadway

doi:10.1117/12.2189929

4 September 2015 Progress in differential deposition for improving the figures of full-shell astronomical grazing incidence x-ray optics

Kiranmayee Kilaru, Carolyn Atkins, Brian D. Ramsey, Jeffery K. Kolodziejczak, Tomasz M. Lis, Mikhail V. Gubarev, Stephen L. O'Dell, Jessica A. Gaskin, David M. Broadway

Author Affiliations +

Proceedings Volume 9603, Optics for EUV, X-Ray, and Gamma-Ray Astronomy VII; 96031F (2015) https://doi.org/10.1117/12.2189929
Event: SPIE Optical Engineering + Applications, 2015, San Diego, California, United States

Abstract

One of the developments at MSFC that is underway to meet the demand of high-resolution X-ray optics for future X-ray astronomy missions is the ‘differential deposition’ technique. This process corrects the axial figure profile of optics by selectively depositing material onto the mirror’s reflective surface. The process relies on accurate metrology achieved using a long trace profiler whose slope resolution is better than 1μrad. From these metrology data an error map is generated that shows the profile of material to be deposited to correct the optic’s figure. A computer-controlled, deposition system then applies this corrective coating.

Simulations show that a substantial improvement in angular resolution is possible with this approach after multiple correction ‘cycles’. To assess this, custom coating systems have been developed and corrections of full-shell optics are underway. To date, a factor of < 2 improvement in the imaging quality of the optics has been demonstrated in x-ray tests after a single stage of correction.

Citation Download Citation

Kiranmayee Kilaru, Carolyn Atkins, Brian D. Ramsey, Jeffery K. Kolodziejczak, Tomasz M. Lis, Mikhail V. Gubarev, Stephen L. O'Dell, Jessica A. Gaskin, and David M. Broadway "Progress in differential deposition for improving the figures of full-shell astronomical grazing incidence x-ray optics", Proc. SPIE 9603, Optics for EUV, X-Ray, and Gamma-Ray Astronomy VII, 96031F (4 September 2015); https://doi.org/10.1117/12.2189929

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available