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Proceedings Paper

The design of a breadboard cryogenic optical delay line for DARWIN
Author(s): Teun van den Dool; Fred Kamphues; B. Fouss; K. Henrioulle; P. P. Kooijman; Martijn Visser; G. Velsink; K. Fleury
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Paper Abstract

TNO TPD, in cooperation with Micromega-Dynamics, SRON, Dutch Space and CSL, has designed a compact breadboard cryogenic delay line for use in future space interferometry missions. The work is performed under ESA contract in preparation for the DARWIN mission. The breadboard (BB) delay line is representative of a future flight mechanism, with all materials and processes used being flight representative. The delay line has a single stage voice coil actuator for Optical Path Difference (OPD) control, driving a two-mirror cat's eye. Magnetic bearings provide frictionless and wear free operation with zero-hysteresis. Overall power consumption is below the ESA specification of 2.5 W. The power dissipated on the optical bench at 40 K is considerably less than the maximum allowable 25 mW. The BB delay line will be built in the second half of 2004. The manufacturing and assembly phase is followed by a comprehensive test program, including functional testing at 40 K in 2005. The tests will be carried out by Alcatel Space and SAGEIS-CSO.

Paper Details

Date Published: 29 September 2004
PDF: 12 pages
Proc. SPIE 5495, Astronomical Structures and Mechanisms Technology, (29 September 2004); doi: 10.1117/12.549410
Show Author Affiliations
Teun van den Dool, TNO TPD (Netherlands)
Fred Kamphues, TNO TPD (Netherlands)
B. Fouss, Micromega-Dynamics (Belgium)
K. Henrioulle, Micromega-Dynamics (Belgium)
P. P. Kooijman, Space Research Organization (Netherlands)
Martijn Visser, Dutch Space (Netherlands)
G. Velsink, Dutch Space (Netherlands)
K. Fleury, Ctr. Spatiale de Liege (Belgium)

Published in SPIE Proceedings Vol. 5495:
Astronomical Structures and Mechanisms Technology
Joseph Antebi; Dietrich Lemke, Editor(s)

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