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

N. Sato·T. Haruyama·N. Kanda·K. Kuroda·S. Miyoki·M. Ohashi·Y. Saito·T. Shintomi·T. Suzuki·D. Tatsumi·C. Taylor·T. Tomaru·T. Uchiyama·A. Yamamoto
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Abstract

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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N. Sato, T. Haruyama, N. Kanda, K. Kuroda, S. Miyoki, M. Ohashi, Y. Saito, T. Shintomi, T. Suzuki, D. Tatsumi, C. Taylor, T. Tomaru, T. Uchiyama, A. Yamamoto. 2002-06-04. Force measurements of a superconducting-film actuator for a cryogenic interferometric gravitational-wave detector. https://doi.org/10.1016/s0011-2275(03)00097-3

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