SPICA/SAFARI Fourier transform spectrometer mechanism evolutionary design

Teun C. van den Dool; Bob Kruizinga; Ben C. Braam; Roger F. M. M. Hamelinck; Nicolas Loix; Dennis Van Loon; Johan Dams

doi:10.1117/12.926066

21 September 2012 SPICA/SAFARI Fourier transform spectrometer mechanism evolutionary design

Teun C. van den Dool, Bob Kruizinga, Ben C. Braam, Roger F. M. M. Hamelinck, Nicolas Loix, Dennis Van Loon, Johan Dams

Proceedings Volume 8442, Space Telescopes and Instrumentation 2012: Optical, Infrared, and Millimeter Wave; 84423R (2012) https://doi.org/10.1117/12.926066
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands

Abstract

TNO, together with its partners, have designed a cryogenic scanning mechanism for use in the SAFARI¹ Fourier Transform Spectrometer (FTS) on board of the SPICA mission. SPICA is one of the M-class missions competing to be launched in ESA's Cosmic Vision Programme² in 2022. JAXA³ leads the development of the SPICA satellite and SRON is the prime investigator of the Safari instrument. The FTS scanning mechanism (FTSM) has to meet a 35 mm stroke requirement with an Optical Path Difference resolution of less then 15 nm and must fit in a small volume. It consists of two back-to-back roof-top mirrors mounted on a small carriage, which is moved using a magnetic bearing linear guiding system in combination with a magnetic linear motor serving as the OPD actuator. The FTSM will be used at cryogenic temperatures of 4 Kelvin inducing challenging requirements on the thermal power dissipation and heat leak. The magnetic bearing enables movements over a scanning stroke of 35.5 mm in a small volume. It supports the optics in a free-floating way with no friction, or other non-linearities, with sub-nanometer accuracy. This solution is based on the design of the breadboard ODL (Optical Delay Line) developed for the ESA Darwin mission⁴ and the MABE mechanism developed by Micromega Dynamics. During the last couple of years the initial design of the SAFARI instrument, as described in an earlier SPIE 2010 paper⁵, was adapted by the SAFARI team in an evolutionary way to meet the changing requirements of the SPICA payload module. This presentation will focus on the evolution of the FTSM to meet these changing requirements. This work is supported by the Netherlands Space Office (NSO).

Citation Download Citation

Teun C. van den Dool, Bob Kruizinga, Ben C. Braam, Roger F. M. M. Hamelinck, Nicolas Loix, Dennis Van Loon, and Johan Dams "SPICA/SAFARI Fourier transform spectrometer mechanism evolutionary design", Proc. SPIE 8442, Space Telescopes and Instrumentation 2012: Optical, Infrared, and Millimeter Wave, 84423R (21 September 2012); https://doi.org/10.1117/12.926066

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

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
7 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Magnetism

Fourier transforms

Mirrors

Sensors

Space telescopes

Actuators

Spectroscopy

Show All Keywords

Keywords/Phrases

Search In:

Publication Years