Force measurements of a superconducting-film actuator for a cryogenic interferometric gravitational-wave detector

Details Force measurements of a superconducting-film actuator for a cryogenic interferometric gravitational-wave detector Force measurements of a superconducting-film actuator for a cryogenic interferometric gravitational-wave detector

2002-06-04

arxiv.org/abs/gr-qc/0206011v1

Cryogenics 43 (2003) 425-429

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

9 pages, 3 figures

Scientific paper

We measured forces applied by an actuator with a YBCO film at near 77 K for the Large-scale Cryogenic Gravitational-wave Telescope (LCGT) project. An actuator consisting of both a YBCO film of 1.6 micrometers thickness and 0.81 square centimeters area and a solenoid coil exerted a force of up to 0.2 mN on a test mass. The presented actuator system can be used to displace the mirror of LCGT for fringe lock of the interferometer.

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