Autonomous cryogenic sapphire oscillators employing low vibration pulse-tube cryocoolers at NMIJ. (June 2016)

• Record Type: Journal Article
• Authors: Ikegami, Takeshi; Watabe, Ken-ichi; Yanagimachi, Shinya; Takamizawa, Akifumi; Hartnett, John G.
• Is Part Of: Journal of physics. Volume 723(2016)
• Publication Date: 2016-06
• Subjects: Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/723/1/012032
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: Two liquid-helium-cooled cryogenic sapphire-resonator oscillators (CSOs), have been modified to operate using cryo-refrigerators and low-vibration cryostats. The Allan deviation of the first CSO was evaluated to be better than 2 x 10 -15 for averaging times of 1 s to 30 000 s, which is better than that of the original liquid helium cooled CSO. The Allan deviation of the second CSO is better than 4 x 10 -15 from 1 s to 6 000 s averaging time.