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21 November 2017 The DARWIN breadboard cryogenic optical delay line
T. C. van den Dool, W. Gielesen, F. Kamphues, N. Loix, P. P. Kooijman, C. de Vries, H. van Weers, K. Fleury, Y. Stockman, G. Velsink, J. Benoit, A. Poupinet, F. Sève
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Proceedings Volume 10567, International Conference on Space Optics — ICSO 2006; 105670J (2017) https://doi.org/10.1117/12.2308045
Event: International Conference on Space Optics 2006, 2006, Noordwijk, Netherlands
Abstract
TNO, in cooperation with Micromega-Dynamics, SRON, Dutch Space and CSL, has designed a compact breadboard cryogenic delay line (figure 1) for use in future space interferometry missions. The work is performed under ESA contract 17.747/03 in preparation for the DARWIN mission. The breadboard (BB) delay line is representative of a flight mechanism. The delay line has a single stage voice coil actuator for Optical Path Difference (OPD) control, driving a twomirror cat’s eye. Magnetic bearings provide frictionless and wear free operation with zero-hysteresis. The design of the BB delay line has been completed.

The development test program, including operation at 100 K has been completed. The verification test programme is currently being carried out and will include functional testing at 40 K.
© (2017) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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T. C. van den Dool, W. Gielesen, F. Kamphues, N. Loix, P. P. Kooijman, C. de Vries, H. van Weers, K. Fleury, Y. Stockman, G. Velsink, J. Benoit, A. Poupinet, and F. Sève "The DARWIN breadboard cryogenic optical delay line", Proc. SPIE 10567, International Conference on Space Optics — ICSO 2006, 105670J (21 November 2017); https://doi.org/10.1117/12.2308045
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KEYWORDS
Magnetism
Mirrors
Cryogenics
Eye
Actuators
Sensors
Interferometers
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