Speaker
Description
The 3rd generation instrument era is approaching, and the Einstein Telescope giant Laboratory is becoming a reality with the possibility to install a detector for Gravitational Waves observations in an underground site where seismic noise is 100 times smaller than on the surface. Moreover, new available technologies and the experience acquired in operating advanced detectors are crucial points to further extend the detection bandwidth down to 2-3 Hz with the possibility to suspend a cryogenic payload. NGSA is an R&D project based on the improvement of the vibration isolation performance for the 3rd generation detectors starting from the present mechanical system of the Advanced VIRGO interferometer (2nd generation instrument) which is considered compliant with the future generation. Following two experimental lines, we studied the possibility of improving the attenuation performance of a multistage pendulum chain equipped with compact magnetic anti-springs that is hung to a double Inverted Pendulum in nested configuration (NIP). The final goal of our experimental activity is the construction and test of a NIP prototype to be installed in ‘Laboratorio di Fisica Sperimentale della Gravitazione’ at Naples. In this talk, we present the status of the NGSA project.
