Method for environmental noise estimation via injection tests for ground-based gravitational wave detectors

Environmental noise is one of the critical issues for observation gravitational waves, but difficult to predict in advance. Therefore, evaluate adverse impact environmental on detector sensitivity, understanding response actual setup crucial, both and future upgrades. In this paper, we introduce verify a new method injection test based post-observation commissioning KAGRA. This (response function model) includes frequency conversion nonlinearity power, which are effects that not considered current model (coupling used LIGO Virgo. We also confirmed validity our by applying it an noise-enriched dataset successfully reproducing them.