The design of a breadboard cryogenic optical delay line for DARWIN

被引：0

作者：

van den Dool, T ^{[1
]}

Kamphues, F ^{[1
]}

Fouss, B ^{[1
]}

Henrioulle, K ^{[1
]}

Kooijman, PP ^{[1
]}

Visser, M ^{[1
]}

Velsink, G ^{[1
]}

Fleury, K ^{[1
]}

机构：

[1] TNO, TPD, NL-2628 CK Delft, Netherlands

来源：

ASTRONOMICAL STRUCTURES AND MECHANISMS TECHNOLOGY | 2004年 / 5495卷

关键词：

optical delay line; ODL; cryogenic; DARWIN; active magnetic bearings; nanopositioning; aperture synthesis;

D O I：

10.1117/12.549410

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

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 build 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.

引用

页码：39 / 50

页数：12

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