Strain gauging for on-orbit figure monitoring of adjustable X-ray optics: systems analyses

Paul B. Reid; Vladimir Kradinov; Mark D. Freeman; Nathan L. Bishop; Casey T. DeRoo; Thomas N. Jackson; Vanessa Marquez; Mohit Tendulkar; Quyen Tran; Susan Trolier-McKinstry

doi:10.1117/12.2595160

Conference proceeding

Strain gauging for on-orbit figure monitoring of adjustable X-ray optics: systems analyses

Paul B. Reid, Vladimir Kradinov, Mark D. Freeman, Nathan L. Bishop, Casey T. DeRoo, Thomas N. Jackson, Vanessa Marquez, Mohit Tendulkar, Quyen Tran and Susan Trolier-McKinstry

Optics for EUV, X-Ray, and Gamma-Ray Astronomy X

08/01/2021

DOI: 10.1117/12.2595160

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Abstract

Adjustable X-ray optics represent a potential mirror technology for the NASA Lynx X-ray observatory mission concept. Adjustable optics employ an integrated micron-thick piezoelectric film deposited on the convex side of silicon Wolter-type mirror segments. Discrete, independently addressable electrodes on the convex surface form individual actuators; the applied voltages are used to correct the shape of the mirror segments for figure errors resulting from a change in thermal environment, epoxy creep, or failure of an epoxy bond. On-orbit correction requires a metrology system to provide real-time feedback of mirror figure. We are examining the use of deposited semiconductor strain gauges to monitor mirror mechanical strains and surface temperatures. To establish requirements for monitoring we modeled a variety of thermal and mechanical disturbances to a mirror segment such as might occur on-orbit or from launch. Models are described and resulting requirements and performance discussed.

Materials Science

Optics

Active optics

Actuator

Metrology

Orbit (dynamics)

Piezoelectricity

Strain gauge

Voltage

X-ray optics

Details

Title: Subtitle: Strain gauging for on-orbit figure monitoring of adjustable X-ray optics: systems analyses
Creators: Paul B. Reid - Center for Astrophysics Harvard & Smithsonian
Vladimir Kradinov - Center for Astrophysics Harvard & Smithsonian
Mark D. Freeman - Center for Astrophysics Harvard & Smithsonian
Nathan L. Bishop - Pennsylvania State University
Casey T. DeRoo - University of Iowa
Thomas N. Jackson - Pennsylvania State University
Vanessa Marquez - Center for Astrophysics Harvard & Smithsonian
Mohit Tendulkar - Pennsylvania State University
Quyen Tran - Pennsylvania State University
Susan Trolier-McKinstry
Resource Type: Conference proceeding
Publication Details: Optics for EUV, X-Ray, and Gamma-Ray Astronomy X
Publisher: SPIE
DOI: 10.1117/12.2595160
Language: English
Date published: 08/01/2021
Academic Unit: Physics and Astronomy; University College Courses
Record Identifier: 9984530558002771

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