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.
Original language | English (US) |
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Title of host publication | Advances in X-Ray/EUV Optics and Components XVII |
Editors | Ali M. Khounsary, Hidekazu Mimura, Christian Morawe |
Publisher | SPIE |
ISBN (Electronic) | 9781510654648 |
DOIs | |
State | Published - 2022 |
Event | Advances in X-Ray/EUV Optics and Components XVII 2022 - San Diego, United States Duration: Aug 22 2022 → Aug 23 2022 |
Publication series
Name | Proceedings of SPIE - The International Society for Optical Engineering |
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Volume | 12240 |
ISSN (Print) | 0277-786X |
ISSN (Electronic) | 1996-756X |
Conference
Conference | Advances in X-Ray/EUV Optics and Components XVII 2022 |
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Country/Territory | United States |
City | San Diego |
Period | 8/22/22 → 8/23/22 |
Funding
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.
Keywords
- Active X-ray optics
- Terfenol-D
- deformable mirrors
- magentostriction
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering