Hannover 2013 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 37: Precision measurements and metrology IV (with Q)

A 37.5: Vortrag

Donnerstag, 21. März 2013, 15:15–15:30, F 128

Breadboard model of the LISA Phasemeter — •Oliver Gerberding, Simon Barke, Joachim Kullmann, Ioury Bykov, Juan Josè Esteban Degaldo, Gerhard Heinzel, and Karsten Danzmann — Max-Planck-Institute for Gravitational Physics (Albert-Einstein-Institute) and Leibniz University of Hannover, Callinstraße 38, 30167 Hannover, Germany

The detection of gravitational waves in the sub-Hz regime will allow insight into the dynamics of galactic objects, like mergers of ultra-massiv black holes. For this purpose the space-born gravitational wave detector LISA is planned, which uses precision heterodyne laser interferometry as main measurement technology.

A breadboard model for the phase readout system of these interferometers (Phasemeter) is currently under development as an ESA project by a collaboration between the Albert-Einstein Institute, the Technical University of Denmark and Axcon Aps. The breadboard is designed to demonstrate all functions for operating a complete LISA-like metrology system, to meet all performance requirements for a future mission and to study the effort of bringing the design to space qualification.

Here we will present a system overview and the current status of testing and development of the breadboard. This includes phase readout with 1 µ cycle/√Hz performance, clock noise transfer, inter-satellite ranging and communication, laser frequency control and acquisition.