München 2009 – scientific programme

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GR: Fachverband Gravitation und Relativitätstheorie

GR 12: Gravitationswellen I

GR 12.4: Talk

Thursday, March 12, 2009, 16:00–16:20, A214

LISA Phasemeter Development: Digital Phase-Lock Loop (DPLL) analysis — Iouri Bykov, Joachim Kullman, Juan Jose Esteban, Antonio Francisco Garsia Marin, •Gerhard Heinzel, and Karsten Danzmann — Max-Planck Institut für Gravitatiionsphysik, Callinstr. 38, 30167 Hannover

The gravitational wave detector LISA (Laser Interferometer Space Antenna) aims to detect and observe in detail gravitational waves from astronomical sources. One of the most important key technology development issues of the LISA-mission is the interferometric readout of the main science measurement. We discuss a mathematical model of the core of the system (DPLL) which was developed and is used for phase measurement system (PMS) tuning. We also present the status of our work on the LISA Phasemeter Hardware, based on the extra large FPGA (main processor unit) and demonstrate the performance of the PMS in laboratory conditions.