@inproceedings{effc7970578b4b4d9ff207f445f455e3,
title = "Magnetic smart material application to synchrotron X-ray optics: prospects and current progress",
abstract = "Magnetic smart materials (MSMs) offer an alternative to the typical piezo-electric actuators that are currently being used to control X-ray optics on beam lines. MSMs combined with an overcoating of a magnetic hard material means a deformable mirror whose non-reflecting side is coated with a MSM plus magnetic hard overcoat can work in a power-off mode. The process works by using an electromagnet (EM) to impose a magnetic field in the bilayer of MSM and magnetic hard overcoat. Once the EM is turned off, the mirror settles to a new shape within minutes. The new shape can then remain intact for days. Since the EM is not fixed to the mirror, the exact placement of the magnetic field can be adjusted by relocating the EM. This feature allows for fine-scale adjustments and avoids the {"}dead pixel{"} replacement problem common with piezo patches that are attached to the mirror. We will give an overview and a progress report.",
keywords = "Active X-ray optics, Terfenol-D, deformable mirrors, magentostriction",
author = "Ulmer, {Melville P.} and Daniel Quispe and Buchholz, {Donald B.} and Chung, {Yip Wah} and Jian Cao and Konstantina Kritikos",
note = "Funding Information: We thank Ball Aerospace for an equipment grant, Jerome Ballestra of Axion Optics for providing us with a second hand MIRAO, and for student support, Illinois Space Grant and Northwestern University. We thank Dr. Steve Arnold for providing the schematic in Fig 1 left, and Dr Ron Shiri and Ms. Kaseylin Yoke for providing Fig 4. Publisher Copyright: {\textcopyright} 2022 SPIE. All rights reserved.; Advances in X-Ray/EUV Optics and Components XVII 2022 ; Conference date: 22-08-2022 Through 23-08-2022",
year = "2022",
doi = "10.1117/12.2633973",
language = "English (US)",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Khounsary, {Ali M.} and Hidekazu Mimura and Christian Morawe",
booktitle = "Advances in X-Ray/EUV Optics and Components XVII",
}