Interferometry for the LISA technology package (LTP) aboard SMART-2

Details Interferometry for the LISA technology package (LTP) aboard SMART-2 Interferometry for the LISA technology package (LTP) aboard SMART-2

May 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003cqgra..20s.153h&link_type=abstract

Classical and Quantum Gravity, Volume 20, Issue 10, pp. S153-S161 (2003).

Computer Science

Performance

12

Scientific paper

The interferometer of the LISA technology package (LTP) on SMART-2 is needed to verify the performance of the gravitational sensors by monitoring the distance between two test masses with a noise level of 10 pm Hz-1/2 between 3 mHz and 30 mHz. It must continuously track the motion of the test mass distance while that distance changes by many µm with a speed of up to 20 µm s-1, without losing track of the sign of the motion and without exerting any influence on the test masses that might lead to a motion above that level. As a result of a detailed comparison study, a heterodyne Mach-Zehnder interferometer was selected as the baseline for the SMART-2 mission. Its design and expected performance are described in this paper.

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