AI 中文总结
该研究针对LIGO O5后引力波项目，探究光子校准器诱导的终端测试质量体变的系统误差，通过有限元分析评估不同探测器模型下该误差的频率依赖效应，为相关研究提供关键校准误差来源的分析结果。
AI 中文摘要
我们研究了引力波（GW）探测器的终端测试质量（ETM）由名为光子校准器（Pcal）的校准装置引起的体变。这种体变是校准误差的来源之一，因为它会引起ETM偏离理想单摆运动的非线性位移，尤其在1500Hz以上是主要误差来源，而该频段对中子星并合研究至关重要。该位移还取决于主干涉仪（IFO）光束与Pcal光束的束偏移。我们从概念上描述了体变的频率依赖效应，并使用有限元分析（FEA）软件，针对先进LIGO（aLIGO）、KAGRA、先进Virgo（AdVirgo）和LIGO A#的ETM模型，在多种束偏移案例中对其进行了评估。
英文摘要
We studied the bulk deformation of the end test masses (ETMs) of gravitational wave (GW) detectors caused by calibration devices named Photon Calibrator (Pcal). This bulk deformation is one of the source of calibration error since it induces non-linear displacement from the ideal pendulum motion of the ETM. Particularly, it is the dominant error source above 1500 Hz which is crucial to the studies of neutron star mergers. The displacement also depends on beam offsets of the main interferometer (IFO) beam and Pcal beams. We conceptually described frequency dependent effect of bulk deformation and evaluated it in several cases of the beam offset with finite-element analysis (FEA) software, for ETM models of Advanced LIGO (aLIGO), KAGRA, Advanced Virgo (AdVirgo), and LIGO A#.
