Modern gravitational wave detectors such as Advanced LIGO, which recently detected gravitational waves, are the most sensitive measurement devices ever constructed. They are based around multiple nested optical cavities, with each mirror in the system suspended to limit the impact of local seismic motion. This leaves the mirrors free to move, but for the detectors to function, the mirrors positions and orientations must be precisely sensed and delicately controlled. This yields a rich controls problem with many relevant degrees-of-freedom.

We are applying methods of machine learning and artificial intelligence to this controls problem, to find optimal solutions that cannot be obtained by humans in a reasonable time. This project will develop a machine learning system for alignment control of a single optical cavity. The machine learning system will be trained and tested with a numerical simulation of a cavity system, and then demonstrated in a table-top optical experiment.