Ring of lights

Aarti Veernala set up this Tevatron-shaped light installation for Diwali, known as the festival of lights.

This photo was taken in the Fermilab Tevatron tunnel. The light blue structures are old Main Ring magnets, and the red structures are Tevatron magnets. The “painted” light remind us of magnetic field lines. This 30-second exposure was taken by setting the camera on a tripod and swinging lights around.