Niobium gravitational radiation antenna with superconducting parametric transducer

✍ Scribed by N.P. Linthorne; P.J. Veitch; D.G. Blair; P.J. Turner; M.E. Tobar; A.G. Mann

• Publisher: Elsevier Science
• Year: 1990
• Tongue: English
• Weight: 209 KB
• Volume: 165-166
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/s0921-4526(90)80854-c

✦ Synopsis

Progress and latest results on the development of a niobium gravitational radiation antenna are reported. An Improved vibration isolation system has been installed and is currently under test. The previously developed transducer self-calibration procedure is summarized. We show that the power dependent microwave cavity Q limits the maximum achievable antenna-transducer coupling factor, p, and thus the maximum bandwidth of the antenna, B. The self-calibration procedure is combined with new data for the k erformance of the reentrant cavity transducer to determine the maximum 8 and B which can be achieved. esults given here show maximum values of 8 = 0.04 and B = 15 Hz.