arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 0906.2655gr-qc
收藏

第三代引力波探测器的木琴结构

A Xylophone Configuration for a third Generation Gravitational Wave Detector

Stefan Hild, Simon Chelkowski, Andreas Freise, Janyce Franc, Nazario Morgado, Raffaele Flaminio, Riccardo DeSalvo

摘要:

实现第三代引力波(GW)观测站所设想的苛刻的灵敏度和带宽,对于单个宽带干涉仪来说极具挑战性。需要非常高的光功率(兆瓦)来减少高频下的量子噪声贡献,而干涉仪反射镜必须被冷却到低温温度以减少低频下的热噪声源。为了解决这种潜在的冲突,高的热负荷的低温试验群众,我们提出了一个概念设计的第三代GW天文台,由一个高功率,高频干涉仪和低温低功率,低频仪器的2波段木琴配置。具有inspiral范围为3200 Mpc和38000 Mpc的二元中子星和二元黑洞合并,分别,我们发现,木琴配置的潜在灵敏度可以显着更广泛和更好的比可能在一个单一的宽带干涉仪。

英文摘要:

Achieving the demanding sensitivity and bandwidth, envisaged for third generation gravitational wave (GW) observatories, is extremely challenging with a single broadband interferometer. Very high optical powers (Megawatts) are required to reduce the quantum noise contribution at high frequencies, while the interferometer mirrors have to be cooled to cryogenic temperatures in order to reduce thermal noise sources at low frequencies. To resolve this potential conflict of cryogenic test masses with high thermal load, we present a conceptual design for a 2-band xylophone configuration for a third generation GW observatory, composed of a high-power, high-frequency interferometer and a cryogenic low-power, low-frequency instrument. Featuring inspiral ranges of 3200Mpc and 38000Mpc for binary neutron stars and binary black holes coalesences, respectively, we find that the potential sensitivity of xylophone configurations can be significantly wider and better than what is possible in a single broadband interferometer.

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。

↑