The Engineering Model of the Inertial Sensor for the Laser Interferometer Space Antenna (LISA) mission is under development. The LISA test masses must be kept free of stray acceleration noise to within 3x10-15 m/s2/vHz in order to obtain the low frequency gravitational wave sensitivity goal. We present here the technological solutions needed to map the scientific requirements into engineering specifications. We also include the results of thermal and gravitational analyses to support the design choices. Finally we report on the on-ground verification approach: the torsion pendulum test bench will allow extensive testing of some critical features and the measurement of the forces acting on the test mass to within an order of magnitude of the goals of the first validation mission.
Inertial sensor design for the Laser Interferometer Space Antenna (LISA)
Vitale, Stefano;Dolesi, Rita;Weber, William Joseph
2003-01-01
Abstract
The Engineering Model of the Inertial Sensor for the Laser Interferometer Space Antenna (LISA) mission is under development. The LISA test masses must be kept free of stray acceleration noise to within 3x10-15 m/s2/vHz in order to obtain the low frequency gravitational wave sensitivity goal. We present here the technological solutions needed to map the scientific requirements into engineering specifications. We also include the results of thermal and gravitational analyses to support the design choices. Finally we report on the on-ground verification approach: the torsion pendulum test bench will allow extensive testing of some critical features and the measurement of the forces acting on the test mass to within an order of magnitude of the goals of the first validation mission.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione
