Description:

Northwestern University's Center for Interdisciplinary Exploration and Research in Astrophysics (CIERA) presents a Special Seminar featuring: 

Siddharth Soni (Louisiana State University)

Talk Title: Scattering noise in O3

Abstract: The aLigo Detectors at Livingston, Louisiana, and Hanford, Washington are among the most sensitive instruments ever constructed. This has been made possible by careful identification and removal of noise and noise sources. Non-Gaussian noise transients pollute the detector data and adversely affect the sensitivity of the detector. One such noise that constantly pollutes the strain data is Light Scattering. This noise results when stray light beam scatters off mirrors, bounces off some moving components during high ground motion and rejoins the main beam. In my talk, I intend to discuss light scattering in O3, its differences from O2 and recognizing a witness channel for the noise. 

Host: Scotty Coughlin