Bent crystal selection and assembling for the LAUE project

V. Liccardo; E. Virgilli; F. Frontera; V. Valsan; V. Guidi; E. Buffagni

doi:10.1117/12.2023617

26 September 2013 Bent crystal selection and assembling for the LAUE project

V. Liccardo, E. Virgilli, F. Frontera, V. Valsan, V. Guidi, E. Buffagni

Author Affiliations +

Proceedings Volume 8861, Optics for EUV, X-Ray, and Gamma-Ray Astronomy VI; 88610A (2013) https://doi.org/10.1117/12.2023617
Event: SPIE Optical Engineering + Applications, 2013, San Diego, California, United States

Abstract

For the first time, with the Laue project, bent crystals are being used for focusing photons in the 80-300 keV energy range. The advantage is their high reflectivity and better Point Spread Function with respect to the mosaic at crystals. Simulations have already shown their excellent focusing capability which makes them the best candidates for a Laue lens whose sensitivity is also driven by the size of the focused spot. Selected crystals are Germanium (perfect, (111)) and Gallium Arsenide (mosaic, (220)) with 40 m curvature radius to get a spherical lens with 20 m long focal length. A lens petal is being built. We report the measurement technique by which we are able to estimate the exact curvature of each tile within a few percent of uncertainty and their diffraction efficiency. We also discuss some results.

Citation Download Citation

V. Liccardo, E. Virgilli, F. Frontera, V. Valsan, V. Guidi, and E. Buffagni "Bent crystal selection and assembling for the LAUE project", Proc. SPIE 8861, Optics for EUV, X-Ray, and Gamma-Ray Astronomy VI, 88610A (26 September 2013); https://doi.org/10.1117/12.2023617

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