Electromagnetic characterization of superconducting radio-frequency cavities for gw detection

被引：13

作者：

Ballantini, R

Bernard, P

Chincarini, A

Gemme, G

Parodi, R

Picasso, E

机构：

[1] Ist Nazl Fis Nucl, Sez Genova, I-16146 Genoa, Italy

[2] CERN, CH-1211 Geneva 23, Switzerland

[3] Scuola Normale Super Pisa, I-56126 Pisa, Italy

来源：

CLASSICAL AND QUANTUM GRAVITY | 2004年 / 21卷 / 05期

关键词：

D O I：

10.1088/0264-9381/21/5/127

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The electromagnetic properties of a prototype gravitational wave detector, based on two coupled superconducting microwave cavities, were tested. The radio-frequency (rf) detection system was carefully analysed. With the use of piezoelectric crystals small harmonic displacements of the cavity walls were induced and the parametric conversion of the electromagnetic field inside the cavities explored. Experimental results of bandwidth and sensitivity of the parametric converter versus stored energy and voltage applied to the piezoelectric crystal are reported. A rf control loop, developed to stabilize phase changes on signal paths, gave a 125 dBc rejection of the drive mode on a time scale of 1 h.

引用

页码：S1241 / S1246

页数：6

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