arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2009.08103astro-ph.IMgr-qc
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先进的Virgo光子校准器

The Advanced Virgo Photon Calibrators

D. Estevez, P. Lagabbe, A. Masserot, L. Rolland, M. Seglar-Arroyo, D. Verkindt

摘要:

随着LIGO、Virgo和KAGRA探测器灵敏度的提高,干涉仪输出的校准变得越来越重要,并可能影响科学结果。对于O3观测,Virgo首次使用光子校准器(PCal)来校准干涉仪,使用调制的辅助激光束照射在Advanced Virgo端镜上的辐射压力。这些光学设备也用于LIGO,现在是全球引力波探测器网络的校准参考。LIGO和Virgo PCal的相互校准基于称为黄金标准的相同绝对参考,可以消除使用PCal的Virgo校准中存在的3.92%的系统偏差。先进处女座的端镜(NE和WE)的PCal引起的位移的不确定性预算估计为1.36%的O3a和1.40%的NE PCal(分别)。O3b的WE PCal为1.74%。这种不确定性是Advanced Virgo全球校准的限制因素。预计在下一次观测运行中,该值将降至1%以下。

英文摘要:

As the sensitivities of LIGO, Virgo and KAGRA detectors improve, calibration of the interferometers output is becoming more and more important and may impact scientific results. For the observing run O3, Virgo used for the first time photon calibrators (PCal) to calibrate the interferometer, using radiation pressure of a modulated auxiliary laser beam impinging on the Advanced Virgo end mirrors. Those optical devices, also used in LIGO, are now the calibration reference for the global gravitational wave detectors network. The intercalibration of LIGO and Virgo PCals, based on the same absolute reference called the Gold Standard, has allowed to remove a systematic bias of 3.92% that would have been present in Virgo calibration using the PCal. The uncertainty budget on the PCal-induced displacement of the end mirrors (NE and WE) of Advanced Virgo has been estimated to be 1.36% for O3a and 1.40% on NE PCal (resp. 1.74% on WE PCal) for O3b. This uncertainty is the limiting one for the global calibration of Advanced Virgo. It is expected to be reduced below 1% for the next observing runs.

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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