THURSDAY, August 13

Special LIGO Seminar, 2:00 PM - 3:00 PM, SCR 351 W. Bridge
"Construction of a seismic array at the former Homestake mine," Luca Nanticchioli (Caltech), Thomas O'Keefe (Caltech).

Abstract:

This summer, five additional seismometer stations were deployed at the Sanford Underground Laboratory in order to determine the magnitude of the seismic noise at various depths. Construction of the stations required insulation of the seismometers from air currents and temperature fluctuations. Sensor boards were installed at the sites to monitor environmental conditions. The data produced by this array of stations might aid in determining the feasibility of modeling seismic activity so that the associated Newtonian noise could be subtracted from gravitational-wave detector data. Correlation measurements between the signals from neighboring stations would provide the most relevant results for this noise-subtraction technique.