The Adaptive X-Ray Optic project at the Lawrence Livermore National Laboratory *

Tom Pardini, Lisa A. Poyneer, T. J. McCarville, Bruce Macintosh, Brian Bauman,
and Michael J. Pivovaroff

Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, CA, 94550

* This work performed under the auspices of the U.S. Department of Energy by Lawrence
Livermore National Laboratory under Contract DE-AC52-07NA27344. Document Release
Number LLNL-ABS-631473

Abstract:

Deformable mirrors have been successfully used in astronomical adaptive optics at near-infrared wavelengths, greatly reducing atmospheric-induced aberrations [1].  Extending this capability to the soft and hard X-ray regime is now required in order to take full advantage of the beam quality characteristic of new 3rd generation synchrotron facilities such as the National Synchrotron Light Source (NSLS-II), and X-ray free electron lasers such as the Linac Coherent Light Source (LCLS) [2]. Achieving this goal challenges both current mirror manufacturing techniques and physical optics modeling.  The X-ray Science and Technology group at the Lawrence Livermore National Laboratory is currently developing an x-ray deformable mirror to correct for wave-front aberrations introduced along the beam path of a typical x-ray beam-line [3]. To model the expected performance of such a mirror, we have also developed simulation code based on the wave-front propagation library of functions PROPER [4]. We will present the current status of the project, including preliminary metrology done on the mirror substrate. Additionally we will present results from our wave-front simulation code, which has proven very useful in predicting technical aspects of mirror deployment at a typical x-ray facility.

References:
[1] C. Marois, B. Macintosh, T. Barman, B. Zuckerman, I. Song, J. Patience, D. Lafreniere, and R. Doyon, Science, 322, 1348 (2008)
[2] P. Emma et al. Nat. Photonics, 4, 641 (2010)
[3] T. Pardini, L. A. Poyneer, A. Plinta, J. L. Cavaco, M. J. Pivovaroff, Proc. SPIE, 8503, 85030H (2012)
[4] John E. Krist, Proc. SPIE 6675, 66750P (2007)