Speaker
Description
Predictions of the uptime behavior of gravitational‑wave detector networks in a realistic operation scenario are essential to assess scientific potential and compare configurations. Data from the LIGO interferometers during Observation Run 4a serves as a basis for extrapolations, because they are of two detectors with similar technology being operated by a single collaboration. This work describes the use of continuous‑time Markov chain models to simulate the fraction of time a detector network spends in a specific state. The most basic model describes a set of uncorrelated and identical detectors. Expansions of the model can be made to (for example) include simultaneous loss of lock events while maintaining the individual detector behavior. Duty‑cycle estimates for the proposed ET configurations will be presented.