论文标题
高级处女座光子校准器
The Advanced Virgo Photon Calibrators
论文作者
论文摘要
随着LIGO，处女座和Kagra探测器的敏感性的提高，干涉仪输出的校准变得越来越重要，并可能影响科学结果。对于观察运行的O3，使用调制的辅助激光束的辐射压力撞击了高级处女座端镜。这些光学设备（也在Ligo中）现在是全球重力波检测器网络的校准参考。基于称为黄金标准的相同绝对参考，Ligo和Pirgo PCALS的插图允许使用PCAL中的处女座校准中消除3.92％的系统偏置。据估计，O3A的PCAL引起的端镜（NE和WE）的不确定性预算为1.36％，而NE PCAL的不确定性为1.40％（WE PCAL分别为1.74％）。这种不确定性是对高级处女座全球校准的有限限制。预计下一次观察跑步将降低到1％以下。
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.
