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

✍ Scribed by 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

Publisher: Elsevier Science
Year: 2003
Tongue: English
Weight: 269 KB
Volume: 43
Category: Article
ISSN: 0011-2275
DOI: 10.1016/s0011-2275(03)00097-3

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✦ Synopsis

We measured forces applied by an actuator with a YBa 2 Cu 3 O 7 (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 lm thickness and 0.81 cm 2 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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