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arXiv 1111.2655cond-mat.supr-congr-qcphysics.ins-det
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用于引力波辐射的超导天线概念

Superconducting Antenna Concept for Gravitational Wave Radiation

A. Gulian, J. Foreman, V. Nikoghosyan, L. Sica, J. Tollaksen, S. Nussinov

摘要:

本文提出了一种通过测量超导环中由其所连接的框架的旋转引起的电流来检测引力波(GW)的想法。框架经受由垂直于其传播的GW引起的扭矩,因为其在相邻象限中由不同密度的材料制成。超导库珀对系统对波的响应是对称的,并保持静止,而超导体中的离子则被移动框架加速。这在回路中产生电流,该电流可由灵敏的电子器件精确测量。为了完成这项任务,天线由两个相互平行的超导回路组成。其中之一,主回路,由于上述原因旋转振荡,而第二个保持静止。在振荡回路中,电流产生振荡的磁通量。由于磁通量量子化,该通量应该通过不移动的次级回路中的相反方向的电流来补偿,在次级回路中,离子静止,而库珀对移动。我们估计产生的信号/噪声比,并讨论信号的可检测性。设想了几种设计,用于天线的地面和轨道布置。

英文摘要:

We present an idea for detecting gravitational waves (GWs) by measuring the current induced in a superconducting loop by the rotation of a frame to which it is attached. The frame experiences a torque caused by a GW propagating perpendicular to it because it is made of materials of different density in adjacent quadrants. Superconducting Cooper pair system responds symmetrically to the wave and stays at rest, while the ions of the superconductor are being accelerated by the moving frame. This generates an electric current in the loop which can be measured precisely by sensitive electronics. For that task the antenna consists of two superconducting loops parallel to each other. One of them, the primary loop, rotationally oscillates because of the described reasons, while the second stays at rest. In the oscillating loop the current creates an oscillating magnetic flux. This flux should be compensated due to fluxoid quantization, by the oppositely directed current in the non-moving, secondary loop, in which the ions are at rest, and the Cooper pairs move. We estimate the resulting signal/noise ratio and discuss the signal detectability. Several designs are envisioned, both for terrestrial and for orbital arrangements of the antenna.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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