Effects of the coating optimization on the field of view for a Wolter x-ray telescope

V. Cotroneo; G. Pareschi; D. Spiga; G. Tagliaferri

doi:10.1117/12.857075

1 August 2010 Effects of the coating optimization on the field of view for a Wolter x-ray telescope

V. Cotroneo, G. Pareschi, D. Spiga, G. Tagliaferri

Proceedings Volume 7732, Space Telescopes and Instrumentation 2010: Ultraviolet to Gamma Ray; 77322P (2010) https://doi.org/10.1117/12.857075
Event: SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, California, United States

Abstract

Multilayer coatings can be used as broad-band reflecting layer in X-ray focusing optics. The effective area over the field of view is determined by the energetic and angular dependence of the coating reflectivity, with a different behavior in dependence of the coating structure, that can be designed in order to enhance the effective area. Often the best design is selected to maximize the on-axis effective area, but this does not ensure the performances off-axis, where the most of the detector area is allocated. We demonstrate the possibility of optimizing the coating over the whole field of view by means of a new method, that does not require the use of ray-tracing procedures, being based on the computation of a simple analytical expression computed over a limited number of points. Our method is used to optimize a multilayer structure over the field of view. The effectiveness of the method is tested by comparison with ray-tracing results. The performances of the multilayer structure resulting from the optimization are then compared with a not optimized broad-band multilayer and with a multilayer optimized for on-axis effective area.

Citation Download Citation

V. Cotroneo, G. Pareschi, D. Spiga, and G. Tagliaferri "Effects of the coating optimization on the field of view for a Wolter x-ray telescope", Proc. SPIE 7732, Space Telescopes and Instrumentation 2010: Ultraviolet to Gamma Ray, 77322P (1 August 2010); https://doi.org/10.1117/12.857075

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

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
8 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Multilayers

Coating

Reflectivity

Mirrors

Photons

Reflection

Telescopes

Show All Keywords

Keywords/Phrases

Search In:

Publication Years