Rachel Carns (born August 13, 1969) is an American musician, composer, artist and performer living in Olympia, Washington, U.S.. Raised in small-town Wisconsin, she went on to study painting and drawing at Cooper Union for the Advancement of Science and Art in New York City, where she completed her B.F.A. in 1991. Carns began her career as drummer for Kicking Giant, later collaborating with several bands, including The Need. She is a celebrated graphic designer, working under the name System Lux, and plays drums and percussion with experimental performance art group Cloud Eye Control.