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Hardware injection of simulated continuous gravitational wave signals for GEO 600
Classical and quantum gravity
Search algorithms for continuous gravitational waves are best tested by injecting simulated signals into the detector hardware. These signals need high phase and amplitude stability for reliable calibration. At GEO 600 we have developed an instrument to inject a simulated pulsar signal with a phase error less than 1% of 2π from the correct signal phase. The injection can run over several months and can recover from interruptions. A key component of the instrument is an analogue electronicdoi:10.1088/0264-9381/21/5/073 fatcat:4zqopersk5ebbmbkut7c3kadwe