Ion beam figuring of nickel mandrels for x-ray replication optics

Mauro Ghigo; Oberto Citterio; Paolo Conconi; Francesco Mazzoleni

doi:10.1117/12.411654

5 January 2001 Ion beam figuring of nickel mandrels for x-ray replication optics

Mauro Ghigo, Oberto Citterio, Paolo Conconi, Francesco Mazzoleni

Proceedings Volume 4145, Advances in X-Ray Optics; (2001) https://doi.org/10.1117/12.411654
Event: International Symposium on Optical Science and Technology, 2000, San Diego, CA, United States

Abstract

The x-ray telescopes foreseen for future x-ray missions will need an high number of mirrors. Using for their production the replication method, an high number of mandrels will be necessary. A cost-effective approach that offers accurate control of the mandrels shape is the ion beam figuring. Using this procedure the aluminum-kanigen mandrels are initially optically figured by diamond turning or by other means, superpolished to the specified microroughness and then ion beam figured to the required shape. An ion beam facility has been built to test the concept. A small test mandrel has been measured obtaining the map of its surface. From this map and from the beam removal function of the ion head a time matrix has been computed to remove the shape errors. Using this time matrix as input to the program that control the movement of the ion head, the mandrel has been corrected from the errors. In this paper is given a description of the ion beam facility and the results obtained figuring the surface of the test mandrel.

Citation Download Citation

Mauro Ghigo, Oberto Citterio, Paolo Conconi, and Francesco Mazzoleni "Ion beam figuring of nickel mandrels for x-ray replication optics", Proc. SPIE 4145, Advances in X-Ray Optics, (5 January 2001); https://doi.org/10.1117/12.411654

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